Created attachment 121344 [details] Video BIOS The driver cannot load the firmware nvidia/gm204/fecs_inst.bin. Xorg won't load the nouveau driver because Unknown chipset: NV124. The backlight does not work. The following commands have no affect on the brightness: echo 2 |sudo tee /sys/class/backlight/acpi_video0/brightness echo 10 |sudo tee /sys/class/backlight/acpi_video0/brightness Brightness works with the proprietary nvidia driver. If mmiotrace logs are beneficial, I will add them.
Created attachment 121345 [details] dmesg on the affected system
Created attachment 121346 [details] Xorg.0.log on the affected system
update to 4.6 and install recent linux-firmware package
Many thanks, great work on the GL support. Backlight is still not supported as far as I can tell on kernel 4.6.2 and Mesa 11.2.2.
Try the following patch: https://lists.freedesktop.org/archives/nouveau/2016-May/025081.html. You should be able to change the brightness through `/sys/class/backlight/nv_backlight/brightness` with it.
That fixed it. Thank you very much! Home users will want it to be connected to xbacklight so that the fn controls will increase and decrease the backlight intensity, but I am quite happy to run a script.
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