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  1. Bug #1752437
  2. Comment #30

Comment 30 for bug 1752437

Revision history for this message
In , brauliobo (brauliobo-linux-kernel-bugs) wrote :

(In reply to Lukas Kahnert from comment #14)
> Created attachment 275381 [details]
> possible fix for touchscreen
>
> I think I found the problem.
> There are 2 ACPI-related bugs which prevents the detection of the
> touchscreen.
>
> 1. As already mentioned, the AMD GPIO driver tries to get an IRQ for GPIO
> but the ACPI code is missing for x86.
> 2. The IRQ of the GPIO device is misconfigured. For some reason it sets the
> IRQ "edge, high" but in the ACPI table it's defined as "level, low".
>
> I made a fix but it's only a temporary workround until someone who have more
> knowledge of the subsystems can implement it cleaner.
> Could someone try this patch on a desktop enviroment? I just tested the
> output of hidraw which worked.

Thanks Lukas, this makes it work!!!

BTW, are you getting hangs/freezes possibly related to the amdgpu driver?