Amlogic meson

Folks, I've flashed a 16GB eMMC 5.0 card with Armbian and it's booted up on a Rev 2 Odroid C2, but it only gets as far as the attached picture shows. I've left it overnight to see if it gets any better and it's still stalled. The blue LED ("disk" activity) is a steady 2-beat heartbeat which to me sounds like it's stuck trying to seek whatever happens next. I wanted to leave it overnight and also post here before attempting to fix via rebooting, then re-flashing if I have to. Anyone see this before? Sorry this is my first go at Armbian and it's on a brand new device - I come from the mx6 world.

TJoe says Thank you!

Hey, I am not able to compile a .ko kernel module : below the error. I think it's fair to say that it may happen on many boards. I guess you supposed that before I had to get the linux-headers on. which required to tune the build config and include the headers during the build for that specific meson64 release at least. Saying that after rebuilding all I am stuck again on the vdso as i can't build a .ko easily. I think many people but i let the team taken the decision may be stuck at one point on linux-headers or to compile a .ko module. I would recommend to have DEFAULT parameter YES for the linux-headers as well as all that would be required…

according to here 5.13 is latest kernel https://www.armbian.com/odroid-c2/ but when I issue: sudo apt-get update && sudo apt-get dist-upgrade -y I'm still on 5.10....

Hi , i buiild a SPDIF connector like shown here: https://forum.odroid.com/viewtopic.php?t=21477 it uses the J7 SPDIF output which is connected to HDMI. On coreelec i can clearly see a HDMI soundcard output with aplay -L , i dont see that on armbian.... Is odroid c2 spdif output on armbian working ? why do i not see this soundcard that f.e. libreelec is showing ( i have 2 odroid c2s , one is running coreelec in my living room with HDMI connector working) im using a little older armbian distro since the latest has ethernet issues on C2 (im using 20.11 , kernel 5.9.10 debian edition ) regards, Simon

Hi, for the Odrioid C4 eMMC v0.4 modules are available. like Spoiler https://www.pollin.de/p/odroid-32gb-emmc-module-c4-811145 Can I use these v0.4 modules in my Odroid C2, too? I didn't find any information about the compatibility. Thanks in advance! Matt

The screen will display for a minute or two before the display will stop and the screen is blank. After 4 minutes the display is back ON. Armbian_21.02.3_Odroidc4_focal_current_5.10.21_xfce_desktop Last errors reported; Mar 11 20:00:00 odroidc4 systemd-udevd[1507]: card1: Worker [1535] failed Mar 11 20:00:00 odroidc4 systemd-udevd[1507]: Worker [1535] terminated by signal 9 (KILL) Mar 11 20:00:00 odroidc4 systemd-udevd[1507]: card1: Worker [1535] processing SEQNUM=2984 killed Mar 11 20:00:00 odroidc4 systemd-udevd[1535]: card1: Spawned process '/usr/local/bin/hdmi-hotplug' [4565] timed out after 2min 59s, killing Mar 11 19:59:14…

I'm running Armbian from a emmc 16GB card. When I use the web browser the mouse constantly flickers, is there any way to get this to stop? Is there a graphics driver I should have enabled? When I select Additional Hardware Drivers none show up, so maybe there isnt a GPU accelerated driver available. Also switching between desktops feels sluggish. Maybe Im expecting too much performance from a $50 SBC. Thanks for your help & time in making this distribution. Im just looking to make the best user experience possible.

Hi! I downloaded 'Armbian_5.20_Odroidc1_Debian_jessie_3.10.103.7z' today, put it on a SD card and successfully booted and 'ssh'ed in it. The board - an old C1 - is running fine. Now I want to install fail2ban and mc, but with the original 'sources.list' for apt there's no way to to that via apt-get. Will I run into difficulties if I change the 'sources.list' to the normal Debian ones and make my installations, updates and upgrades from there? Frank

Hello. I tested Armbian Jessie with Odroid C1+ and encountered several issues, would like to know if they're known or if I've done something wrong. 1) Odroid C1+ gets no display if not booting into X11. Framebuffer text console is not present at all. This makes it impossible to do any kind of configuration if not connecting via SSH. 2) If connecting via SSH, updating the system and rebooting, it doesn't seem to boot anymore. The machine is not available for ping, and I can no longer connect to do any further configuration. 3) Issuing "reboot" over SSH seems not to reboot the board, instead power needs to be cycled manually. I'm tried server and desk…

Hello, i bought my first odroid, and decide to install armbian. I download armbian from official server, and i try write os using rufus on Windows. I choose 'dd' and check raw file, rufus write image without error. When I plug MicroSDHC card, system starts, red led is on, blue flashing. From first minutes system have got big lag, I wait 50 minuts and do nothing in first boot. Last text on screen is **** Starting Update UTMP about System Runlevel Changes... [ OK ] Started LSB: PLEASE BE PATIENT AND DO NOT INTERRUPT THE FIRST REBOOT [ OK ] Started Update UTMP about System Runlevel Changes. *** I use Odroid c2 rev 2.0 20160226 and SanDisk ultimate Micr…

Hi, I just switch from hummingboard i4 to odroid c2 (same os, armbian, same app on it), all it's ok but I got an issue with load average, on i4 I have about 0.4 but on C2 I have 3 and I don't understand why. Here a vmstat from C2 : procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu----- r b swpd free buff cache si so bi bo in cs us sy id wa st 0 0 0 891036 74724 277404 0 0 0 0 310 493 3 2 95 0 0 1 0 0 891004 74724 277404 0 0 0 0 18272 1863 0 2 98 0 0 0 0 0 891036 74724 277404 0 0 0 0 18205 1950 4 0 96 0 0 1 0 0 891036 74724 2774…

I have been trying to build a C2 image with xenial and without including a desktop using the armbian build script. I have tried putting the toolchain in /opt/toolchains (like odroid's wiki states) and also in the build script's directory under toolchains. I've placed the proper export lines to each path in .profile & .bashrc but no matter how i go about this I always have the compile.sh script error out after "Cleaning [ linux-odroidc2/odroidc2-3.14.y ] I am using a VM that has gcc/g++ 4.9 installed and is running ubuntu xenial (would not using 14.04 have something to do with this?). /home/kyle/build/lib/common.sh: line 230: /home/kyle/build/toolchains/gcc…

hi, I installed latest Armbian (Debian/Jessia) as well as built Xenial Ubuntu (5.20 kernel 3.14.79 in both cases). Board is Odroid-C2. As i have a Wifi USB - TP-Link TL-WN823N I need to build a driver for it as it is not included in kernel. Found instructions at Armbian documentation: http://docs.armbian.com/User-Guide_Advanced-Features/#how-to-build-a-wireless-driver but after starting with make ARCH=arm64 it fails with error that ... xen.h is missing. Does anyone have recipe for success ? Below is failure log on Debian-Jesse (exactly same issue on Xenial-Ubuntu). Tx in advance !!! root@odroidc2:/home/zh/rtl8192cu-fixes# make ARCH=arm64 …

Hi all at present state , i installed slim or gdm , but they are not good to start GUI automatically . so i start GUI by startx . what display manager is good for ondroid-c2 ? cat .xinitrc startxfce4 --- regards i write the install steps at http://odroid-akita.blogspot.jp/2016/04/odoroid-c2.html (japanese input is OK)

Hi, Having problems with instalation of certbot on latest armbian and Odroid C2...; root@odroidc2:/etc/apt# apt-get install certbot Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: certbot : Depends: python-certbot (= 0.8.1-2~bpo8+1) but it is not going to be installed E: Unable to correct…

I have a 8gb SD card and 64gb eMMC. I want to put Armbian on the SD and use eMMC for high disk usage activities. When using the eMMC it will always boot of that device. You can alter the boot.ini to get it to boot off the SD once it reads the boot information from the eMMC. I installed Odroid Mate on BOTH the eMMC (to get the boot partition created) and the SD I can get it to use the installed OS from the SD card. Original Odroid boot.ini from eMMC: setenv bootargs "root=UUID=74ce0af9-be77-4ebe-9308-c06feb2ecef9 rootwait ro ${condev} no_console_suspend ... # Booting fatload mmc 0:1 ${initrd_loadaddr} uInitrd fatload mmc 0:1 ${loadaddr} Image fatload mmc 0:…

Hello, I tried to build a fresh image for the Odroid C2, but always fails with the u-boot.bin. The error is equivalent to the Issue #452 on Github. Anyone else with this problem? Thanks in advance.

Greetings. I'm running a headless cluster of Odroid C2's (eMMC) using the latest Armbian buster minimal image with kernel 4.19.69-meson64. I'm encountering an issue where it takes a long time for SSH connection to be accepted (initially up to 30 min consistently). I get a connection refused. The issue seems to be due to the entropy pool becoming depleted during the early boot process which blocks SSH from starting while it refills the pool. The problem seems to be known and documented well here: https://daniel-lange.com/archives/152-Openssh-taking-minutes-to-become-available,-booting-takes-half-an-hour-...-because-your-server-waits-for-a…

Hello, I am using up to date Armbian - Debian Buster with Armbian Linux 4.19.69-meson64 Linux version 4.19.69-meson64 (root@builder) (gcc version 7.4.1 20181213 [linaro-7.4-2019.02 revision 56ec6f6b99cc167ff0c2f8e1a2eed33b1edc85d4] (Linaro GCC 7.4-2019.02)) #5.95 SMP PREEMPT Mon Sep 2 01:21:39 CEST 2019. I have encountered Ethernet interface lockup on medium traffic (after 30s-120s when copying big files from external usb disk by sshfs - 240Mb/s). At high/medium Ethernet traffic the issue always occurs. It is most likely caused by some kernel update because I didn't have such problem before. Similar issue: https://github.com/rockchip-linu…

Installed from Armbian_5.14_Odroidc2_Ubuntu_xenial_3.14.72. Tested in two different Odroid C2's. One with EMMC, the other with SD CARD and fully updated. Procedure: fallocate -l 2G /root/2GB.file cp /root/2GB.file /. After that all sort of erratic behavior from the board and eventually it crashes. In /var/log/kern.log: Aug 19 14:28:01 localhost kernel: [ 669.078129] INFO: rcu_preempt detected stalls on CPUs/tasks: { 3} (detected by 2, t=33627 jiffies, g=296, c=295, q=84431) Aug 19 14:28:01 localhost kernel: [ 669.083412] Task dump for CPU 3: Aug 19 14:28:01 localhost kernel: [ 669.083418] kthread_hdcp R running task 0 65 2 0x00000002 Aug 19 1…

After update the firefox does not run making the image for odroid c2 more or less useless...

Hi everyone I've tried to flash "armbian*.raw" downloaded from here: http://www.armbian.com/odroid-c2/URL] the "Jessie desktop" version. I have a panasonic 16gb micro SD card They say that the ".raw" image can be written with Rufus...but they don't explain what kind of settings should I have to use. I've tried many of that settings bit with no result...the program always says "DONE" but when I put it in the odroid there's no boot. Does anyone know a "how to flash" please?? Inviato dal mio SHIELD Tablet utilizzando Tapatalk

Hi, I'm testing the Odroid C2 image (Armbian_5.10_Odroidc2_Debian_jessie_3.14.67_desktop) on my C2. Flashing and verifying the image onto an emmc went fine. I made adjustments to the boot.ini ("setenv m "1280x1024p60hz"" and "setenv vout "dvi""). No problems creating a user and (first) booting into the gui. After a reboot I encounter problems with the gui resolution and colors: 1. most parts of a window is now black 2. no matter what I change in boot.ini, I don't get higher resolution then 1280x720 with black bars at the bottom and right https://picload.org/view/rgllllag/wp_20160518_001-kopie.jpg.html (pic had to be taken by cam since a screenshot doesn't show…

I did a quick install of the desktop image for the ODROID C2. It sees no audio devices (HDMI - or any of the half dozen or so USB Audio devices I quickly tried). However, I have a app I wrote that builds a custom "kitchen sink" version of FFMPEG (everything is enabled). I built it on the C2 (to get a compile time), and noticed the sound did work from the app (and it sounded great). I wish I would have had more time to investigate why no audio devices are detected, and further, why I am able to play sound (only from the one app). Sorry. I am just trying to be helpful in saying "hey - the sound IS there - some users just may not be able to immediately get to…

Hi everyone, I've just installed Armbian on my Odroid C2 but I'm struggling running Iceweasel Firefox. I have a segfault everytime even in safemode, any guess of the problem (I made both apt-get update & apt-get upgrade). Thanks !

Hello, Recently I have discovered bug in kernel or maybe iptables with using Huawei E3372h LTE Hi-Link USB dongle (or maybe other devices which exposes HTTP interfaces over cdc_ether). Odroid enters into kernel panic and reboot. I am using ARMBIAN 5.85 stable Debian GNU/Linux 9 (stretch) 4.19.42-meson64. kernel:[ 60.801868] Internal error: Oops: 96000004 [#1] PREEMPT SMP The steps to recreate the bug: 1) disable or remove NetworkManager, use only IPv4, 2) set network interfaces in /etc/network/interfaces source /etc/network/interfaces.d/* auto lo iface lo inet loopback auto eth0 allow-hotplug eth0 iface eth0 inet static address 1…

I recently did an apt-get update on an Odroid C2 which included the following: linux-dtb-odroidc2 linux-firmware-image-odroidc2 linux-headers-odroidc2 linux-image-odroidc2 linux-jessie-root-odroidc2 linux-u-boot-odroidc2-default. I figured it'd be all fine and dandy because it looks to just be an update to 3.14.67, versus the old 3.14.65. Installed and restarted without any apparent errors. Upon logging in, uname -r still reports 3.14.65-odroidc2 however. Files in /boot seem to all be labeled 3.14.67, but it's looking for all the kernel modules in /lib/modules/3.14.65-odroidc2, which is now basically an empty folder instead of /lib/modules/3.14.67-odroidc2. S…

Hello.. What kernel version is used in armbian? Hardkernel latest release is 3.14.80 .. armbian uses 3.14.74. ( i suppose the versioning is the same only older kernel is used on armbian). Is it possible to add harkernel repo and upgrade the kernel without braking anything? Thank you,

Odroid C2 not booting Armbian 5.25 Odroid C2 Debian jessie default 3.14.79 after reboot te system never came up. red solid light. blue blinking light. Please help. uart log added: Spoiler GXBB:BL1:08dafd:0a8993;FEAT:EDFC318C;POC:3;RCY:0;EMMC:0;READ:0;CHK:0; TE: 269146 no sdio debug board detected BL2 Built : 11:44:26, Nov 25 2015. gxb gfb13a3b-c2 - jcao@wonton Board ID = 8 set vcck to 1100 mv set vddee to 1050 mv CPU clk: 1536MHz DDR channel setting: DDR0 Rank0+1 same DDR0: 2048MB(auto) @ 912MHz(2T)-13 DataBus test pass! AddrBus…

Hello, After upgrade Armbian (4.19.69-meson64) to Armbian Buster with Linux 5.3.11-meson64 warning messages shows up on boot in dmesg: ... [ 1.973932] Key type encrypted registered [ 1.985109] dwc2 c9000000.usb: c9000000.usb supply vusb_d not found, using dummy regulator [ 1.985153] dwc2 c9000000.usb: c9000000.usb supply vusb_a not found, using dummy regulator [ 1.986616] phy phy-c0000000.phy.0: USB ID detect failed! [ 1.986623] phy phy-c0000000.phy.0: phy poweron failed --> -22 [ 1.986643] ------------[ cut here ]------------ [ 1.986700] WARNING: CPU: 3 PID: 68 at drivers/regulator/core.c:2036 _regulator_put+0x34/0xd8 [ 1.986702] Modul…

When I start the OS for the first time, the cursor is not visible, either at the command line or in the nano editor. I'm running the HDMI output through a HDMI->VGA adapter, which is then fed into my KVM along with the mouse and keyboard. The monitor is capable of 1920x1200, and it all works fine except for the cursor not being visible. I've tried various escape codes, etc. Nano never displays a cursor. When I log in via SSH the cursor is plainly visible. I'm trying to configure the WiFi, which doesn't seem to want to work if the ethernet is connected, so I'm stuck at the tty terminal. Any suggestions?

Hi folks, I flashed the Armbian Jessie server image to sd. Then I ran update and upgrade after the system booted. I installed xorg and MATE desktop. No problems anywhere. I did not install a display manager as I want to login from tty. I basically performed the exact same install I have done for 15 years(since Gnome2). And a problem I haven't seen in 10 years or more rears it's ugly head as I type in "startx". MATE desktop boots up and I have no mouse or keyboard... I hit ctrl-alt-del and I have keyboard in the shutdown prompt. lsmod meson_ir 2943 0 joydev 10384 0 spidev 5785 0 spi_gpio …

Hi all . i hear sound by mplayer X.mp4 but i cannot hear sound in youtube with iceweasel . i lack something . what is it ? aplay -l **** List of PLAYBACK Hardware Devices **** card 0: ODROIDHDMI [ODROID-HDMI], device 0: I2S.26 dit-hifi-0 [] Subdevices: 1/1 Subdevice #0: subdevice #0 cat .asoundrc pcm.!default { type hw card 0 } ctl.!default { type hw card 0 } --- regards

Hello, I freshly installed Armbian Buster 20.02.3 with 5.4.21-meson64 and also compiled Kodi 18.6 from source by following this guide. It seems however that I cannot get any HDMI sound and ALSA gives me: aplay: device_list:272: no soundcards found... Could it be that I am missing something fundamental or is this a known issue? Thank you. Manos

Anyone else having issues with reboot hanging on Xenial image on C2? Having to power cycle every time.

Hi, I am on my third attempt at running armbian on my C2. 16GB eMMC (purchased through Hardkernel) card. The image is; Armbian_5.20_Odroidc2_Debian_jessie_3.14.79_desktop.img On the last two attempts I have followed the getting started guide and performed an update/upgrade after install; apt-get update apt-get upgrade All setup proceeded without issue. However, the C2 refused to restart with a steady blue light on the board (no heartbeat). This is my third attempt and so far I have not upgraded and have tested restart and shutdown a few times...all working well. Can you give me any advice on this issue? Should I wait for a new image?

Hi, i had a little problem with root login on C2. It gives a message about "/usr/local/bin/temper" file absent and goes to restart. Problem solved by installation "armhf" architecture (temper file is present but compiled for 32 bit). thank you very much for your work.

Can the c2 RTC be used with armbian?

Greetings all. Today I tried updating my Odroid C2 to image 5.22 posted on Oct 22, 2016. And I got the following error during apt-get upgrade: Setting up linux-u-boot-odroidc2-default (5.22) ... /var/lib/dpkg/info/linux-u-boot-odroidc2-default.postinst: line 5: conditional binary operator expected /var/lib/dpkg/info/linux-u-boot-odroidc2-default.postinst: line 5: syntax error near `function' /var/lib/dpkg/info/linux-u-boot-odroidc2-default.postinst: line 5: `[[ == function ]] && setup_write_uboot_platform' I peaked at the code in /var/lib/dpkg/info/linux-u-boot-odroidc2-default.postinst contains #!/bin/bash source /usr/lib/u-boot/platform_install.sh [[…

Hello, I have 16GB orange eMMC v0.4 module for Odroid C2. I have installed on it Armbian Debian Stretch Next (mainline kernel). When I run iozone I got read results that is slower than eMMC Hardkernel specs. root@odroidc2:~# iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 Iozone: Performance Test of File I/O Version $Revision: 3.429 $ Compiled for 64 bit mode. Build: linux Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins Al Slater, Scott Rhine, Mike Wisner, Ken Goss Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, Randy Dunlap, Mark Montague, …

hi all i try unixbench (Version 5.1.3) compared with orange pi PC's System Benchmarks Index Score 202.0 Benchmark Run: ç« 5月 03 2016 23:39:28 - 00:07:31 0 CPUs in system; running 1 parallel copy of tests Dhrystone 2 using register variables 7827597.5 lps (10.0 s, 7 samples) Double-Precision Whetstone 915.0 MWIPS (9.8 s, 7 samples) Execl Throughput 459.3 lps (29.9 s, 2 samples) File Copy 1024 bufsize 2000 maxblocks 176763.8 KBps (30.0 s, 2 samples) File Copy 256 bufsize 500 maxblocks 53800.0 KBps (30.0 s, 2 samples) File Copy 4096 bufsize 8000 maxblocks 43140…

Hi There, i´ve tried armbian on my odroid C2, but the sources list is not fully available .. or simply wrong. an : apt-get update ... .... Hit http://httpredir.debian.orgjessie/non-free Sources Fetched 151 kB in 12s (12.3 kB/s) W: Failed to fetch http://apt.armbian.com/dists/jessie/InRelease Unable to find expected entry 'main/binary-arm64/Packages' in Release file (Wrong sources.list entry or malformed file) E: Some index files failed to download. They have been ignored, or old ones used instead. shows, that something is wrong with sources list... regards arel

I do have problems on my two Odroid C2 after "apt-get update" and "apt-get upgrade". It happens on a freshly installed Armbian_5.14_Odroidc2_Debian_jessie_3.14.72 (on a 64GB eMMC) immediately after the first login (so at least in principle, i can't be the culprit, but who knows ): The following packages will be upgraded: linux-dtb-odroidc2 linux-headers-odroidc2 linux-image-odroidc2 linux-jessie-root-odroidc2 linux-libc-dev linux-u-boot-odroidc2-default tzdata Preparing to unpack .../linux-dtb-odroidc2_5.16_arm64.deb ... Unpacking linux-dtb-odroidc2 (5.16) over (5.14) ... Preparing to unpack .../linux-headers-odroidc2_5.16_arm64.deb ... Unpacking linux-headers-…

Hello, I have installed Armbian Debian Stretch Next (mainline kernel) on my Odroid C2 and updated to newest version(apt update & apt upgrade). Everything works fine except USB ports. I have USB LTE modem which is not recognized. I have tried "lsusb -v" but with this modem not works. But when I connect USB keyboard first then "lsusb -v" and next I connect LTE modem and type "lsusb -v" then it's works. I also tried connecting USB LTE modem before Odroid C2 boot but this workaround not working. Is there any workaround which not involving connecting more than one USB device? Maybe usb kernel modules (usbcore, …

Hi, I installed yesterday armbian on my Odroid C2. I would like to use an USB to serial converter but, the device is not detected by the system. When I plug the USB device, I just have this message in the kerner.log file and the USB device is not created : Nov 18 12:04:41 localhost kernel: [59003.780747] usb 1-1.3: new full-speed USB device number 13 using dwc_otg However, when I run lsusb the device is listed : root@odroidc2:~# lsusb Bus 001 Device 013: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter Bus 001 Device 002: ID 05e3:0610 Genesys Logic, Inc. 4-port hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID…

Hello, I using up to date Armbian Stretch with kernel 4.19.41-meson64 #5.85 SMP PREEMPT Wed May 8 12:40:37 CEST 2019 aarch64 GNU/Linux. I started using TP-Link TL-WN722N V1 USB WiFi dongle recently. Unfortunately Armbian has crashed and rebooted once during I using such USB dongle. I tried to reproduce this bug once more but I can't. I have installed firmware-atheros package for this USB dongle. Should I install armbian-firmware-full package instead of firmware-atheros? It could help? Log: Spoiler May 11 14:23:25 xxx kernel: [ 2690.401749] usb 1-1.1: new high-speed USB device number 8 using dwc2 May 11 14:23:2…

Hello Forum, i am using a vdr headless server with 3 Technisat Skystar USB tuners for satellite television streaming. Before i used a raspberry pi 2 but because of limitations with its ethernet bandwith i went to odroid c2. System is now armbian with self compiled vdr with vnsi plugin, both out of git repo. System runs fine but after some hours (8h) a sporadic failure occurs and (USB?) system becomes unusable, To get the 3 dvb-s2 tuners running i increased the urb pool (USB request block) with kernel parameter "coherent_pool=6M" in boot.ini. I calculated that every of all 3 instances of driver needs about 512kB of USB buffer memory, without the option the first inst…

Hello, I using up to date Armbian Stretch with kernel 4.19.41-meson64 #5.85 SMP PREEMPT Wed May 8 12:40:37 CEST 2019 aarch64 GNU/Linux. Today about 2 minutes after system boot I have found this warning in kernel log: May 12 07:51:48 xxx kernel: WARNING: CPU: 1 PID: 0 at kernel/time/hrtimer.c:917 hrtimer_forward+0x88/0xd0 May 12 07:51:48 xxx kernel: Modules linked in: cdc_ether usbnet uas xt_tcpudp nf_log_ipv4 nf_log_common xt_LOG xt_multiport xt_conntrack iptable_filter ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_connt May 12 07:51:48 xxx kernel: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.41-meson64 #5.85 May 12 07:51:48 xxx kernel: Hardware …

Hello, i download wiringPi library using, # git clone https://github.com/hardkernel/wiringPi # cd wiringPi # ./build as root, i compile library with errors. login as: root root@192.168.2.110's password: ___ _ _ _ ____ ____ / _ \ __| |_ __ ___ (_) __| | / ___|___ \ | | | |/ _` | '__/ _ \| |/ _` | | | __) | | |_| | (_| | | | (_) | | (_| | | |___ / __/ \___/ \__,_|_| \___/|_|\__,_| \____|_____| Welcome to ARMBIAN Debian GNU/Linux 8 (jessie) 3.14.73-odroidc2 System load: 0.00 Up time: 44 min Memory usage: 7 % of 1719Mb IP: 192.168.2.110 CPU temp: 47°C Usage of /: 13% of 15G Last login: Wed J…

Please contribute if you're affected: https://github.com/igorpecovnik/lib/issues/499

I successfully flashed the "Armbian_24.11.1_Odroidc4_noble_current_6.6.60-kisak.img" on my emmc, and everything boots, runs, and updates fine... My 2TB USB3.0 seagate HD, /dev/sda, is seen fine in "dmesg", as well as "lsblk" and "blkid", but when I add my UUID, ..., in /etc/fstab it fails to mount at boot. see below line in /etc/fstab for above /dev/sda1 : UUID=<output-of-bklid-for-sda1> /media/USB01 ext4 defaults 0 1 To test the above /etc/fstab mount I ran: sudo findmnt --verify (which completes successfully) Also, if I run: sudo mount -a (it manually automounts /dev/sda1 -> /media/USB01 successfully). …

Hello, I am using up to date Armbian Buster. TP-Link TL-WN722N V1 USB WiFi dongle causes system crashes after kernel upgrade to 5.4.12-meson64 #19.11.8 SMP PREEMPT Thu Jan 16 20:12:23 CET 2020 aarch64 GNU/Linux. Before updating the kernel, I had no such problem. Feb 12 20:17:15 xxx systemd[1]: Found device AR9271 802.11n. Feb 12 20:17:15 xxx systemd[1]: Started ifup for wlx54e6fc8d208e. Feb 12 20:17:15 xxx wpa_supplicant[2360]: Successfully initialized wpa_supplicant Feb 12 20:17:15 xxx sh[2344]: wlx54e6fc8d208e=wlx54e6fc8d208e Feb 12 20:17:17 xxx wpa_supplicant[2361]: Using interface wlx54e6fc8d208e with hwaddr 54:e6:fc:8d:20:8e and ssid "mynetwork" Fe…

Hello, I recently bought Odroid C2. Legacy Ubuntu Server image works great, but Ubuntu Server Next (mainline kernel) doesn't boot. SSH shows network error: connection timed out, screen is black. Is it something wrong with current image or my hardware? (Other OSes are working fine like legacy dekstop, DietPi). Power supply is official barrel DC jack 5V/2A.

Hello I use the odroidn2 build, (slightly patched with dts add patch) for my Dreambox one/two (s922X). My Broadcom Wlan chip BRCM4356A2 is not supported in either etch or current. This patches: https://github.com/armbian/build/blob/master/patch/kernel/archive/meson64-6.0/general-meson-mmc-1-arm64-amlogic-mmc-meson-gx-Add-core-tx-rx-eMMC-SD-SD.patch https://github.com/armbian/build/blob/master/patch/kernel/archive/meson64-6.0/general-meson-mmc-2-arm64-amlogic-dts-meson-update-meson-axg-device-tree.patch prevent that. https://pastebin.com/Cbvd82R8 If I go back to the previous patch: https://github.com/armbian/build/blob/master/patch/kernel/ar…

Hello everyone, my system is - Armbian Linux 4.18.8-odroidc2. Nextcloud is installed on this board and as data drive is a Lexar 64GB usb stick. I now have an SSD hard drive with two partitions, I had moved the system from the SD card to the first partition on the SSD. The second partition is called nextcloud and is a data drive. Everything works fine so far, but Armbian does not boot without the USB stick, it is not mounted either, it just has to be in the usb slot, otherwise the armbian will not boot. I need your help because I don't know what to do next. root@Nextcloud:~# blkid /dev/mmcblk1p1: UUID="4722b364-ae1f-42d6-ad8f-831b8…

Hi, I have question about ports /dev/ttyAML1 and /dev/ttyAML2 (device Odroid C2, Image Buster) I dont see in dmesg the ports /dev/ttyAML1 and /dev/ttyAML2 [ 0.000256] printk: console [tty1] enabled [ 1.877506] c81004c0.serial: ttyAML0 at MMIO 0xc81004c0 (irq = 13, base_baud = 1500000) is a meson_uart [ 1.877549] printk: console [ttyAML0] enabled [ 3.452296] systemd[1]: Created slice system-serial\x2dgetty.slice. [ 3.455230] systemd[1]: Created slice system-getty.slice. [ 4.257715] cdc_acm 1-1.4:1.0: ttyACM0: USB ACM device overlays=i2cA i2cB uartA uartB uartC w1-gpio How should i chnage the meson-gxbb-…

I tried Armbian_20.11.0-trunk.32_Odroidc2_focal_current_5.9.8.img and Armbian_20.11.0-trunk.32_Odroidc2_buster_current_5.9.8.img and both will not boot after apt upgrade. Armbian_20.08.22_Odroidc2_focal_current_5.9.6.img will not come up after sudo reboot and has to be power cycled. I believe the latter has been a persistent issue.

I am having an issue playing 24 bit files on my audio system. I am feeding from an Odroid C2 running Armbian Ubuntu to a Schiit Yggrasil DAC, via USB. The problem is that while all 16 bit files play perfectly, all 24 bit files play with crackles and pops and are unlistenable. I am trying to figure out where the incompatibility lies in the USB interface between the units - is it a Linux issue (I've tried other distributions with the same results) or is it something in the hardware? Any thoughts on the issue would be most appreciated.

Hi, I would like to run a 32 bits (armhf) Debian or Ubuntu image on an Odroid C4. Do you know if this is possible, and if it is, can you point me to the right image ? Cheers, jf

Has anyone had any luck cloning their repository as described on http://openlinux.amlogic.com/wiki/index.php/Arm/arm-Kernel_Info/Kernel4.9 So far it just keeps timing out on me.

boa noite gostaria de pedir ajuda estou tentando instalar o armbian em placa amlogic s805 e gostaria do arquivo u-boot já pesquisei no forum no site desde já agradeço não obteve sucesso

TL;DR: the following is a simple summary of the issue: Amlogic SoCs contain an own embedded microcontroller (Cortex-M3) used for controlling power and clocks A proprietary and closed source firmware is loaded on the M3 at boot. This stuff is contained in the bl30.bin blob we have to include This firmware controls the real clockspeeds, ignores what the cpufreq framework running in the Linux kernel wants and even reports back bogus clockspeeds (the kernel wants to set 1512 MHz, the M3 ignores this and sets 1416 MHz instead but the code returns faked 1512 MHz) Various tests showed that this is not related to thermal protection but just to $some…

I can't get the ubuntu gui desktop to use the entire 2160p screen - it only uses 1/4 (1080p upper left rectangle.) The settings menu for display is locked to 1080p. I've searched and there are explanations as to how to set boot.ini to get 2160p (which works) but the ubuntu desktop won't use the full screen. What do I need to do to get a full screen GUI display? Thanks.

Hello gents. I cannot seem to be able to find the reason why the image I copy the SD gets some files gets corrupted after the first boot. I tried to force not to resize the rootfs too with no luck. I find out that the /etc/network/interfaces is different from what I edited. On a linux machine I used Etcher to flash the image Armbian_5.35_Odroidc2_Debian_jessie_default_3.14.79.img. Then edit the file /etc/network/interfaces on the SD (an 16GB Samsung EVO) to add the line "auto eth0" which is missing(!), unmount the SD, move it to the Odroid C2 and boot it. the result after the first boot is (at minicom console): root@odroidc2:~# cat…

I was running Armbian Bullseye for a while with OMV 6. I happened to see OMV has gone to v7 and Armbian to bookworm. I went here to get the SBC/IOT bare version of bookworm: https://www.armbian.com/odroid-hc4/ Problem 1: is it said: "You are using an automated version meant only for developers..." Problem 2: it did not come with Armbian-config which I had to install manually Problem 3: Armbian-config 'softy' refused to install OMV saying it can only be installed on Buster (OMV5) or Bullseye (OMV6) Finally: https://wiki.omv-extras.org/doku.php?id=omv7:armbian_bookworm_install states specifically not to use any developer v…

Hi Folks, did anybody got a working Armbian image for the Nanopi-K2 EMMC version. The SD Version works great, I'm looking for an EMMC version, or a tutorial on how to convert the SD version into an EMMC Version. I know that there is an EMMC OÌmage at NanoPi Download page, BUT with this version none of the 4 USB Ports is working, and the Kernel is 3.14. and cannot be updated anymore. many thanks for any hint PS: I also try to contact nanopi support but I never get any response from them. wikrie

armbian on Odroid C2 4.13 or mainline 4.14?

I am running bookworm on a banana pi m2 zero. It comes up properly and connects to Wifi and to the attached LAN adapter, so I can access it via SSH on both interfaces. BUT, when I disconnect the keyboard, it doesn't boot properly anymore and I cannot connect to it. I attached a monitor to take a look at the startup messages and found that it hangs at starting the hostname service (see screenshot) How can I get it to boot properly?

Hi, I broke my /boot on eMMC and my Beelink GT1 is in boot loop. I can't configure u-boot to boot from the SD card to reinstall it. Can you help me reconfigure u-boot to boot from the SD card? Thx printenv bootargs=rootfstype=ramfs init=/init console=ttyS0,115200 no_console_suspend earlyprintk=aml-uart,0xc81004c0 ramoops.mem_address=0x20000000 ramoops.mem_size=0x100000 ramoops.record_size=0x8000 ramoops.console_size=0x4000 androidboot.selinux=permissive logo=osd1,loaded,0x3f800000,576cvbs hdmimode=720p60hz cvbsmode=576cvbs hdmitx= androidboot.firstboot=0 mac=86:48:d8:49:99:56 androidboot.mac=86:48:d8:49:99:56 bootcmd=run start_aut…

What would cause the following dialog to show up when running a binary? : No such file or directory When I run strace against the file I get the following for the execution command. execve("./spyserver", ["./spyserver"], [/* 20 vars */]) = -1 ENOENT (No such file or directory)

Hi, I recently installed a fresh Armbian and did some tests. I noticed two major problems: Video is not accelerated: it is absolutely unusable with kodi Bluetooth seems absent (missing from DTB? other reason?) Please find below execution outputs of some commands: root@nanopik2-s905:~$ cat /etc/armbian-release # PLEASE DO NOT EDIT THIS FILE BOARD=nanopik2-s905 BOARD_NAME="NanoPi K2" BOARDFAMILY=meson-gxbb BUILD_REPOSITORY_URL=https://github.com/armbian/build BUILD_REPOSITORY_COMMIT=b9814056 DISTRIBUTION_CODENAME=focal DISTRIBUTION_STATUS=supported VERSION=20.11.3 LINUXFAMILY=meson64 BRANCH=current ARCH=arm64 IMAGE_TYPE=sta…

Hi, all I have tested all the bookworm images and they all have the same error. HDMI debugging not working... This is the log uart Armbian_23.5.1_Nanopik2-s905_bookworm_current_6.1.30 Regards npik2-armbian

I figure I'd make this a new post. Thanks to @Markus_ and @Igor for their help. I'm still trying to get wifi module 3 working, but I'm happy to at least have an up to date C1 image. git clone --depth=1 --branch=master https://github.com/armbian/build cd build mkdir -p ./output/debs wget -c -O ./output/debs/linux-u-boot-current-odroidc1_23.02.0-trunk_armhf.deb http://apt.armbian.com/pool/main/l/linux-u-boot-odroidc1-current/linux-u-boot-current-odroidc1_21.02.3_armhf.deb ./compile.sh CLEAN_LEVEL= BOARD=odroidc1 BRANCH=current RELEASE=jammy REPOSITORY_INSTALL= BUILD_MINIMAL=no BUILD_DESKTOP=no KERNEL_CONFIGURE=no KERNEL_ONLY=no COMPRES…

Hi, I have C4 installed sdcard with bullseye from armbian website and all good first steps, change pass etc, update upgrade, no error on console and reboot from console it simple not rebooting, I need to power off all the time. I tried Jammy just for check that is worked so what is wrong with Bullseye? My armbianmonitor -u is at http://ix.io/4cyZ

Hi, I just changed from my 16GB eMMC to a 64GB eMMC (black type, ordered by Pollin, with Android initially on it). I use Etcher on Windows 7, as before, no problems occured so far. If I use the same image (Armbian_5.37_Odroidc2_Debian_stretch_next_4.14.13) as I do on my 16GB eMMC, the C2 boots up normally. I can login in as root, and get prompted for a new password. This image includes Uboot changes for setting serial port baudrate, no other changes to kernel. An here the trouble starts: no matter what password I want to use as new one, I fail. If I use a "too easy one" I get denied (as it should be). If I use a complicated one, I ge…

Hi all, I have a problem with current DEV kernel. On some boards, everything works nicely, and after booting the kernel network is stable, on some other C2 boards, I get error messages on the eth0 dwmac, and no network: [ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd034] [ 0.000000] Linux version 5.3.15-meson64 (root@skylake) (gcc version 7.4.1 20181213 [linaro-7.4-2019.02 revision 56ec6f6b99cc167ff0c2f8e1a2eed33b1edc85d4] (Linaro GCC 7.4-2019.02)) #5.99 SMP PREEMPT Thu Dec 12 11:12:47 CET 2019 [ 0.000000] Machine model: Hardkernel ODROID-C2 [ 0.000000] Reserved memory: created CMA memory pool at 0x000000006d800000, size 256 MiB […

I only test on my OdroidC2 so this find may affect more. As repeatedly mentioned, the C2 has usb detect issues. For us, a main culprit not discussed yet is the default kernel config. Having both: CONFIG_USB_EHCI_TT_NEWSCHED=Y CONFIG_USB_OHCI_HCD=Y For USB1.1, these should be one or the other, never both. Mainline has: CONFIG_USB_OHCI_HCD=Y and CONFIG_USB_EHCI_TT_NEWSCHED is not set. For the OdroidC2, CONFIG_USB_OHCI_HCD=N is proper. As it has no OHCI and USB2 handles that for us. Forcing the USB power on state has helped workaround this issue, by keeping the driver tied to the device in the kernel.

It seems the networking in Armbian 5.59 is messed up. It creates a eth0 adapter (disabled) and Wired network 1 adapter. You can delete these in nmtui, but they always return. I had the same issue with NanoPi Duo using mainline Stable. I can get it to work a bit using armbian-config, removing all interfaces and configuring IP, but it gets screwed up again. I cannot trust to run 5.59 headless because I have no way to get into the SBC without hooking video back up.

Hi - I'm running kernel 4.18.8-odroidc2 under stretch and I've installed linux-headers-next-odroidc2 linux-source-4.18.8-next-odroidc2 where the kernel image was linux-image-next-odroidc2 The system in general rocks - I was worried about not being able to use my RTL8812AU in the monitor mode - but it works! But I have 2 issues with 4.18.8-odroidc2, first the RTC PCF8563 module. The .config file includes the following entries CONFIG_RTC_DRV_PCF85363=m # CONFIG_RTC_DRV_PCF8563 is not set The Odroid C2 RTC shield is the one not set, namely, the PCF8563 …

Hi, I'm getting a random packet loss on the ethernet connection. When pinging, about 6-8% pings are lost, the ssh connection sometimes freezes for a moment. Things I've tried so far: Disabled NetworkManager, added eth0 in /etc/network/interfaces with a static ip4 address Disabled EEE for eth0 Replaced ethernet cable Plugged into different switch None of them made something better. My C1 & C4 with the same Armbian Buster version/release don't have this issue. How to investigate deeper in this issue?

C2 running FAB! http://forum.armbian.com/index.php/topic/2422-more-proper-testing-better-armbian-experience/page-2 Many thanks to Miike for the great wallpapers; http://forum.armbian.com/index.php/topic/2417-armbian-wallpaper-remake/

Hi, just to let you know, I changed from "next" to "current", and found some quirks in the "current" kernel (using "buster"). (1) uart_C is not working (already fixed by martinayotte, thanks for the fast response!) (2) microSD card behaves strange: you can boot from uSD card, that works. When booting from eMMC card, the uSD clot is "dead", card insertation is not recognized anymore, it can't be used. Michael

hi, i recently created a game that i would like to install over 905x3 tv box, i would like to protect it from copy. is there a way to encrypt the whole ROM without the need of any external hardware or password to be entered each reboot ? tv box launch directly into the game and every possible way to interact with linux is disabled (keyboard, usb, lan) and i only need to encrypt the ROM to make the game more resistent in some extent to copy. i read about encrypted bootloader but i'm not sure if that is what i need. can i only encrypt the game bin with a key that is protected inside the 905x3 ? (beside cpuid as it seem easy to reverse). …

Hi I build ubuntu xenial with next kernel (4.13.....) and image don't boot https://pastebin.com/QHQfHHSa and I also can't boot debian 9 with next kernel https://pastebin.com/yXjWk5Wh Any idea where is problem?? all fine with dev kernels

I cannot find the serial number with Armbian 23.02.2 on ODroid C4. On ODroid C2 with Armbian 22.11.2 and older versions it was readable on /sys/firmware/devicetree/base/serial-number. This does not exist anymore on C4. I do not know if it depends on Armbian version or board type.

Hi, I want to change the resolution to a custom setting. In order to do this I changed the /boot/boot.ini file to custombuilt and include the relevant modeline for my display. When I start the odroid, it crashes. I then tried to just use setenv display_autodetect "true" and no preset selected, it also crashes. Perhaps I misunderstand auto_detect, but when I set the custombuilt option with the right modeline, it still won't work.. any ideas?

Hi I'm wondering why chromium is missing from the ODroid C2 image when taking the non-desktop image and then adding the necessary packages to get a minimal X working? Planning to just build it from source, but wondering why it was missing from the core armbian distro? Is there a reason?

did a clean install of Armbian_5.21_Odroidc2_Debian_jessie_3.14.79.img when i today apt-get upgrade to Armbian 5.23 the same problem occured on the eMMC after rebooting the system 2 times. did the same install on a micro-sd card 1 UHS no problem :S it appears to happen every time on a Armbian version upgrade. Please HELP! upgrade log eMMC: apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages will be upgraded: armbian-firmware hostapd linux-dtb-odroidc2 linux-headers-odroidc2 linux-image-odroidc2 linux-jessie-root-odroidc2 linux-u-boot-odroidc2…

hi all . i think sd card is much shorter life time and restricted size ( 64G ~ 128G and big size is too expensive ). so as server , i like to use hard disk as root . for this purpose , nand-sata-install.sh is excellent ( but too complex for me to understand ) . i use nand-sata-install.sh on odroid-c2 armbian . and on working armbian , i run next script . ( the timing to attach sdb is about 10~15 second later after armbian booting ) . sda1 is cloned to sdb1 . clone-rsync-2-HDD-delete.bat ntpd -s date echo '--------------------' umount /mb1 mount /dev/sdb1 /mb1 df echo '--------------------' read X echo $X cd /mb1 mkdir -p bin etc home lib …

Hello, A GPS module ublox is connected to a odroid c2 board on GPIOX.12 and GPIOX.13 for the RX and TX and GPIOX.10 for the PPS. The board is running the stable kernel 4.19.42-meson64 from Armbian based on Debian stretch which was dist-upgraded to Debian buster. I am trying to get the /dev/pps0 entry using GPIOX.10 to finish the chrony setup but I cannot find the correct syntax in the DTS file. Any pointer or idea ? I try either of the gpios line below, none of them seems to be correct. pps { gpios = "< 0x1e 0x66 0x0 >"; #gpios = "<&gpiox 10 GPIO_ACTIVE_HIGH>"; #gpios = "< 0x66 >"; assert-fall…

Hi, after a very successful deployment last year we will start a new sub sea C2 deployment next year (next to the old installation, in Northern Pacific, down at 2600m). Things work out nicely, but now we reached a state where some help from experts is welcome. I need to include some changes into the filesystem generated by Armbian build system, and hope someone can give me a hint on how to do it best way: - include some packages into the image (list available) - add some files to /etc/udev/rules.d/ - add some lines to /etc/rc.local - have a preinstalled user plus home directory (optional) Any help is appr…

I am using: Armbian_5.14_Odroidc2_Debian_jessie_3.14.71 I am a bit stumped....if I run with 3 network interfaces, everything is fine. If I add a fourth interface...the system locks up...even if the 3rd and 4th interface have no ip address. They just need to be live! I have tried 4 drastically different interfaces in case the device driver can't handle it. Anybody have any thoughts or suggestions?? THank you!

hi dear all i am MS student and want to make my own development board for S905. if i purchase components from market and make a pcb then is it work? any one can answer my question?

Hello everyone, I am evaluating the purchase of an SBC (the Radxa Zero seems to be the best equipment, power / consumption) for one of my projects, but I cannot find reliable sources regarding the consumption of the SBCs. Have any of you carried out extensive tests?

I am trying to connect a PPS source to an ODROID-C2 board using GPIO. I am running Armbian 19.11.3 Buster, with kernel 5.3.11-meson64. I downloaded the Armbian kernel source for this kernel, added the following to meson-gxbb-odroidc2.dts, and compiled and installed it: pps { compatible = "pps-gpio"; gpios = <&gpio GPIOY_3 GPIO_ACTIVE_HIGH>; status = "okay"; interrupt-parent = <&gpio_intc>; interrupts = <26 IRQ_TYPE_LEVEL_LOW>; }; When I boot and load the pps-gpio module, I get the following error: pps-gpio pps: failed to map GPIO to IRQ: -6 pps-gpio: probe of pps failed with error -22 …

my TFT shield need fb_odroidc_tft32 missed module from there ) https://github.com/longsleep/ubuntu-odroidc/blob/master/drivers/video/fbtft/fb_odroidc_tft32.c

Hi, On an Odroid C2, I used to read IP camera stream with ffmpeg without HW decoding, as it was not available yet. After reading many threads on this forum, regarding hw decoding through ffmpeg, I decided to give a try....but without any success. First of all, I tried to decode the Sintel.2010.720p.mkv file, and it worked well. This is the command I used: ffmpeg -c:v h264_v4l2m2m -i Sintel.2010.720p.mkv -an -vf fps=1 -f image2 -strftime 1 "/dev/shm/cam1_%S.jpg" (This takes a snapshot every second from the video file) And I got this output: [h264_v4l2m2m @ 0xaaaab68e84f0] driver 'meson-vdec' on card 'Amlogic Video Deco…

Hi! I try to use GPIO on BananaPi M5 board. But interface doesn't work. Armbian 23.05.1 Jammy with Linux 6.1.30-meson64. /boot/armbianEnv.txt: verbosity=1 console=both overlay_prefix=meson fdtfile=amlogic/meson-sm1-bananapi-m5.dtb rootdev=UUID=d099eb25-cf52-43fb-b826-535b9109637f rootfstype=ext4 overlays=w1-gpio usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u m5@bananapim5:~$ dmesg | grep w1 [ 7.568386] w1-gpio onewire@0: gpio_request (pin) failed [ 7.607814] w1-gpio onewire@0: gpio_request (pin) failed [ 7.620109] w1-gpio onewire@0: gpio_request (pin) failed [ 7.662444] w1-gpio onewire@0: gpio_request (pin) failed [ …

Hi, I use the new kernel with I2CA being used for controlling some U/I meters and sensors. There are three 1Wire masters included by overlay (and they work ): > ls /sys/bus/w1/devices/ > 22-000000214032 28-00000a09aa8d w1_bus_master2 > 28-00000a089919 w1_bus_master1 w1_bus_master3 I2C works also fine, all devices mounted so far are answering: > i2cdetect -y 0 > 0 1 2 3 4 5 6 7 8 9 a b c d e f > 00: -- -- -- -- -- -- -- -- -- 0c -- -- -- > 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > 20: 20 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- …