Hi,

 

on my BananaPI I installed this image: Armbian_5.10_Bananapipro_Debian_jessie_4.5.2_desktop.raw

I followed these instructions: https://searchathing.com/?p=250 to move / to SATA (or USB) and crypt it with LUKS.

 

After all, cat /proc/cpuinfo says, there is only 1 CPU-core.

 

How can I activate the 2nd core?

 

Thanks for your help

please can you give the exact output of

- cat /proc/cpuinfo

 

update the packages

sudo armbianmonitor -u

Please here

 

cat /proc/cpuinfo:

 

processor : 0

model name : ARMv7 Processor rev 4 (v7l)

BogoMIPS : 48.00

Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm

CPU implementer : 0x41

CPU architecture: 7

CPU variant : 0x0

CPU part : 0xc07

CPU revision : 4

 

Hardware : Allwinner sun7i (A20) Family

Revision : 0000

Serial : 1651660e0ac1fb8c

 

 

apt-get update and apt-get upgrade I already did.

 

 

 

sudo armbianmonitor -u:

 

http://sprunge.us/WMHC

update uboot to "next" version and reboot ... and remove uboot without "next" too.

I did

 

apt-get install linux-u-boot-bananapi-next

apt-get remove linux-u-boot-bananapi

 

but still one core is missing

I assume you rebooted the board. Huh. I need to check if there are some problems with our build config ... tomorrow. Currently out of office.

Yes, I rebooted

tomorrow is OK, don't panic

 

thanks

if it is fixed, fine

 

the issue:

- 1st boot : 2 core online

- 2nd boot : 1 core online, 1 core offline

 

DTB base issue, memory corrupted (frequency?) ??? anyway

### lscpu:

Architecture:          armv7l
Byte Order:            Little Endian
CPU(s):                2
On-line CPU(s) list:   0
Off-line CPU(s) list:  1
Thread(s) per core:    1
Core(s) per socket:    1
Socket(s):             1
Model name:            ARMv7 Processor rev 4 (v7l)
CPU max MHz:           960.0000
CPU min MHz:           144.0000

I don't really understand what you say.

 

What can I do to fix this issue?

I don't know what you did but there are two cores:

 

- on untouched image

- on upgraded to latest kernel (apt-get update && apt-get upgrade)

I followed these instructions:

https://searchathing.com/?p=250

to move / to SATA (or USB) and crypt it with LUKS.

 

 

before I did this 2 cores were available.

maybe there is a little mistake, but I don't know, how to solve.