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. Regards, Samuel
