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