[Bug 75791] i915: backlight turns off during boot

[bugzilla-daemon at bugzilla.kernel.org]

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

--- Comment #11 from mcy at lm7.fr ---
Oh yes, debugfs wasn't mounted indeed.
/sys/kernel/debug/dri/0/i915_opregion is empty on all three kernels (nightly,
3.14.3 and the working 3.13). /sys/kernel/debug/dri/64/i915_opregion too, for
that matters. Other files from /sys/kernel/debug/dri/0/ contain something, so I
guess the debugfs is working properly.

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