The 2011 models have faulty Radeon GPU, so to use Intel graphics, I run:
config -ef /bsd
disable radeondrm
quit
And this solution is very stable.
However, it is impossible to adjust the monitor backlight (may be unrelated to above?), for example:
wsconsctl display.brightness=50%
I am aware there is some (open source) 3rd party software from Intel, floating around Github, but I don't know what exactly it does, how it works:
https://github.com/jcs/intel_backlight_fbsd
Is there any other solution?
Many thanks
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