[Bug 55311] Since 3.7.1-17.1 radeon has no backlight when using vgaswitcheroo (regression)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=55311





--- Comment #26 from Daniel Vetter <daniel at ffwll.ch>  2013-04-16 13:41:45 ---
Created an attachment (id=98861)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=98861)
Don't clamp backlight when disabling on gen4+

Can everyone affected by this bug please test the attached patch? It hopefully
fixes the backlight issues without causing problems on other systems - since on
most systems we really want to disable the backlight.

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