On Mon, Jan 23, 2023 at 12:37:47PM +0100, Hans de Goede wrote: > Some apple laptop models have an ACPI device with a HID of APP000B > and that device has an IO resource (so it does not describe the new > unsupported MMIO based gmux type), but there actually is no gmux > in the laptop at all. > > This patch-series improves the drivers/acpi/video_detect.c so that > it no longer tries to use the non present gmux in this case. > > Note I'm still waiting for testing feedback from the reporter of > this problem. But from the logs the problem is clear > (the logs show: "apple_gmux: gmux device not present") Please provide a link to the original report. I would also like to know the exact MacBook model used and I would like to see full dmesg output as well as an acpidump. What you're saying here is that there's a fake APP000B device present in DSDT and I have a hard time believng that. We need to find out what's really going on and how macOS handles this. Thanks, Lukas
