[Bug 75791] i915: backlight turns off during boot

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=75791

--- Comment #4 from mcy at lm7.fr ---
Created attachment 135581
  --> https://bugzilla.kernel.org/attachment.cgi?id=135581&action=edit
kern.log with drm-intel-nightly kernel

So I built the kernel from the drm-intel-nightly branch, and here is the
kern.log excerpt, still with drm.debug=0xe. The behaviour with this kernel is
the same as when I booted 3.14 with nomodeset, i.e. the backlight doesn't turn
off but stays at the maximum and /sys/class/backlight is empty.

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