I've now upgraded to Xubuntu 18.04, and in the process of doing that, I found the culprit. I set my display's color profile by running xcalib in the LightDM setup script, and in order to make this work with the HWE stack, I had to create a file /etc/X11/xorg.conf.d/20-intel.conf and fill it with this -
Code:
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
EndSection
Why does this change kill the brightness keys?
How to get the brightness keys back without deleting this config file?
Or is there another way to set the color profile at LightDM setup that doesn't require this config file?
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