Hi Gabriel, On Mon, Sep 23, 2019 at 09:45:05PM +0200, Gabriel C wrote: > Hi guys, > > I noticed some warning in dmesg on this Laptop. > > Fn+right, Fn+left is BrightnessDown/Up and produce the following warning: > > acer_wmi: Unknown function number - 4 - 0 > > The brightness has some other issue on this Laptop but not sure > who to blame on this. Probably amdgpu.? > > /sys/class/backlight/amdgpu_bl1/brightness <-> actual_brightness > seems to mismatch. EG: when brightness is 0 actual_brightness is still 5140. > Base on _BCM and _BQC in your DSDT. The backlight control is handled by EC. But, in some Acer machines that the _BCM is broken. You can try to modify brighess by echo to sys/class/backlight/acpi_video0/brightness > Unplugging the AC gives the following warning: > > acer_wmi: Unknown function number - 8 - 0 > > When plugging the AC back I see; > > acer_wmi: Unknown function number - 8 - 1. > > I uploaded a dump of the acpi tables and dmidecode of the box. > > https://www.frugalware.org/~crazy/nitro5/ACPI > https://www.frugalware.org/~crazy/nitro5/DMI > > Please let me know if you need any other informations. > Thanks for your report the behavior for the function 4 and function 8. Maybe we can use the platform event to do something. e.g. expose key code to userland. Unfortunately my working list is too long that I do not have time for it currently. Thanks a lot! Joey Lee
