@PHLin
Can you give the kernel param video.use_native_backlight=1", or utopic 3.16
kernel a try?
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
** Changed in: hwe-next
Status: Triaged => Incomplete
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https://bugs.launchpad.net/bugs/1393644
Title:
[Dell Inspiron 3531] Brightness control does not work on 14.04.1
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