Public bug reported:
Screen brightness can not be changed at all in Ubuntu 12.10 as well as previous
versions (Ubuntu 12.04 as well). This bug still has not been fixed for a long
time. The brightness control buttons on the laptop (fn) also does not work.
This is on a Dell XPS L702X laptop.
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1181693
Title:
change screen brightness keys (fn) does not work on Dell XPS L702X
laptop in Ubuntu 12.10 also screen brightness can not be changed or
modified using any other settings
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