I tried those but it is not a Thinkpad. What is happening is the drivers for intel backlight are not loading. That is why adding that file works. I don't know who it needs to be reported to I will ask my team as it looks not to be an issue with the kernel but with X11.
I tried those but it is not a Thinkpad. What is happening is the drivers for intel backlight are not loading. That is why adding that file works. I don't know who it needs to be reported to I will ask my team as it looks not to be an issue with the kernel but with X11.