Upgrade kernel to >= 5.6

[20k-ultra]

To run wireguard the device needs kernel >= 5.6 but we pin to 4.14.76 from f7724b1.

[jellyfish-bot]

[20k-ultra] This issue has attached support thread https://jel.ly.fish/aace85f4-536a-4f91-9689-a90a40a1af29

[floion]

The latest kernel version provided by the hardware vendor is a 5.4 kernel at this point: https://github.com/AaeonCM/meta-up-board/tree/dunfell/recipes-kernel/linux

[jellyfish-bot]

[alexgg] This has attached https://jel.ly.fish/aace85f4-536a-4f91-9689-a90a40a1af29

[dremsol]

I've created a thread on the UP community forum. Maybe upvoting helps to get the BSP to Kirkstone.

[dremsol]

Support for Kirkstone is available in the following reposistory. Upstream has been changed up-division/meta-up-board. Associated fork

[jellyfish-bot]

[fisehara] This has attached https://jel.ly.fish/789862ac-b672-499b-8c9f-d7fce390f9fd

[FlorianHeigl]

The 5.4 kernel also seems to have an i915 gpu bug, my board reliably crashed when starting X with local display.
The information on the Yocto update did not list the classic 'up board' but at least anyone with newer boards could run a new kernel.

Edit: I was able to get around that issue. The culprit was that it's trying to disable sleep level 6 for the GPU (disabled by bios i think), but the option changed. The change was on kernel 4.x already, but Balena still sets the old value.

Change old i915.enable_rc6=0 to new enable_dc=1

I've gone the safest route, disabled power management and applied all bios updates (need a boot stick with a working efi shell, it was very annoying.

So, did all BIOS updates, still crashes after a second of playback. The whole system crashes, ssh connection is lost.

Change module options for i915 as such:

# /etc/modprobe.d/i915.conf 
options i915 enable_psr=0 enable_dc=0

System is ok when playing video. If you feel like it you can poke around with the GPU options in bios to maybe avoid this.
But I think a current kernel would avoid the whole dance.