kworker process

[guenther]

Hi folks!

Since the PineTab section seems dead I like to place my post here:

On my PineTab, kernel version 5.10 / 5.13 has the issue that after several minutes after reboot some "kworker" process comes up and eating up 100% cpu.
Kernel 5.9 works fine.

Some inputs? Seems I'm the only one with that issue...

Edit: Its the same on "mobian" and "bookworm"

[ragreenburg]

The lost linked below may have an answer to your problem. Seems like maybe doing a kernel upgrade may be able to solve your issues?

https://askubuntu.com/questions/33640/kw...o-much-cpu

[guenther]

Thank you @ragreenburg for the link. I will dig deeper into the issue but for the moment stick to kernel 5.9...

[ragreenburg]

Thank you @ragreenburg for the link. I will dig deeper into the issue but for the moment stick to kernel 5.9...

Best of luck! I am currently on kernel 5.10 and when I tried switching up to 5.13/5.14 I had problems with my brightness. Apparently though the newer kernels are better for battery life.

[guenther]

I switched to kernel 5.13 and did some investigation according to the posted link....

dmesg output gave me:

Code:

musb_bus_suspend 2527: trying to suspend as a_wait_bcon while active

So it seems it has something to do with the micro usb port. It's also not possible to charge the PineTab or connect it to a pc over that port with kernel 5.13.

I found that link what possibly explains it, but I'm too lazy to read it fully at the moment:
https://gitlab.com/postmarketOS/pmaports/-/issues/1009

Thankfully there is kernel 5.9