I've just updated BIOS:
8DET69WW (1.39 )
07/18/2013
Unfortunately brightness control still doesn't work via hotkeys (echoing
value to /sys still works).
Is there any way to check/modify action performed by hotkeys? I see that they
are correctly regognized by xev as XF86MonBrightnessUp and
XF86MonBrightnessDown.
If you point me to the right place maybe I will be able to investigate the
problem?
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1391153
Title:
Thnikpad X220 - brightness control doesn't work
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