On Mon, Feb 20, 2023 at 09:44:54AM +0100, Hans de Goede wrote: > On 2/19/23 14:39, Lukas Wunner wrote: > > I believe the Mac Pro (the trashcan one) also contains a gmux and > > an APP000B device in DSDT. I recall seeing a bug report due to a > > splat in the gmux driver on that machine. Back then I confirmed > > in the schematics that it does contain a gmux, though I think it's > > only used for brightness, not GPU switching. > > Erm, the Mac Pro (the trashcan one) does not have an internal LCD > panel, right? So I don't think the gmux will be used for brightness > control there ... Right. I see now that I even added a comment to apple-gmux.c on that Mac Pro, I couldn't figure out back then what the gmux was for: * (The MacPro6,1 2013 also has a gmux, however it is unclear why since it has * dual GPUs but no built-in display.) Thanks, Lukas
