I have two Le Potato boards (http://ix.io/2ykP http://ix.io/2ykN), I installed Armbian Focal on them. One of the board has defective HDMI (board from Kickstarter?), it has no HDMI output. Other board was ordered from Amazon, a year later. It has HDMI output but colors are not right (white is green, black is purple, etc, HDMI image is not nice but it is usable; it is interesting that when I use HDMI to VGA adapter, colors are right; when board runs in low resolution, colors are right on HDMI too. But when resolution is high, 1950x1200, then HDMI colors are wrong - I swapped HDMI cable without any effect - is this known video driver issue??).

 

So because only one board have working HDMI, I used that board with working HDMI to install Armbian to microSDHC card and then moved microSDHC to the other board (that is working but HDMI is broken). In few minutes I noted that both boards have the same MAC address (Ethernet).

 

I have found that the MAC address in file /boot/armbianEnv.txt is unique for each board but they have the same MAC address 96:93:89:FF:90:C3 (and that MAC address is not in file armbianEnv.txt). Is this a bug?

 

I fixed that by editing "/etc/NetworkManager/system-connections/Wired connection 1.nmconnection", I replaced MAC address "96:93:89:FF:90:C3" with address from armbianEnv.txt. After reboot each board has unique MAC address (and gets different IP address from local DHCP server).

Edited September 21, 20206 yr by PSL

I am experiencing similar problems with HDMI wrong colors. It happens on all meson boards I tested (lepotato, c2, and a custom build for Khadas Vim2).

 

It only happens with certain monitors/HDMI adapters, others work fine. In addition, I cannot select other resolution than the default (in this case 1280x720).

 

I think the problem must be in u-boot hdmi initialization, because it is also present during the armbian boot logo. It does not happen with @balbes150's images, they have perfect colors in every monitor/adapter.

 

I will open a bug in Jira. These are some screenshots of the failing displays:

https://imgur.com/a/fW7lskz

 

EDIT: This is something similar to what is reported for Odroid C2 in HK's images: https://wiki.odroid.com/odroid-c2/troubleshooting/forcergb

This is the reference to the Jira issue: https://armbian.atlassian.net/browse/AR-550