On Mon, Aug 23, 2021 at 08:06:26PM +0200, Samuel Čavoj wrote:

Hello,

The driver times out talking to the PPM (the message pops up 60 seconds
after loading the module, the timeout in ucsi_acpi_sync_write).
The command which times out is the first one after resetting the PPM in
ucsi_init, enabling basic notifications.

The laptop in question is an ASUS UM325U, with the AMD Ryzen 5700U SoC.

The ACPI description of the USBC000 device looks reasonable to my eyes,
but I am not an expert. The _DSM Method copies the UCSI OpRegion to (or
from) EC memory. I can provide a dump if needed.

I am looking for guidance on how to proceed, I am not too familiar with
the UCSI other than peeking at the spec for a short while.

Looking the error up online leads to various discussions usually ending
with installing an nvidia driver, however mine does not have any
dedicated GPU.

Can you send full dmesg output, and acpidump:

        % dmesg > dmesg.dump
        % acpidump -o acpi.dump

If enabling the notifications fails, then I'm not sure the EC firmware
on this board actually supports UCSI. That would not be unheard-of
situation.

thanks,

-- 
heikki