I have a very similar bug. while developers don't fix it, i managed do change the brightness via xrander. http://askubuntu.com/questions/149054/how-to-change-lcd-brightness-from-command-line-or-via-script
I have a very similar bug. while developers don't fix it, i managed do change the brightness via xrander. askubuntu. com/questions/ 149054/ how-to- change- lcd-brightness- from-command- line-or- via-script
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