[Bug 59841] [IVB cpu eDP] panel is broken due to 657445fe86 (eDP bpp clamping)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=59841

--- Comment #95 from jkp <jkp at iki.fi> ---
By failing backlight / brightness control, are you referring to brightness key
controls or changing via the device controls? I've noticed these to be
different - sometimes when the key control doesn't work (and I think also the
Ubuntu gnome control center brightness adjustment didn't work), I could adjust
brightness by writing values to the appropriate device file.

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