[Bug 67454] After suspend/resume, screen is black for all but the highest levels with i915 driver on MacBook Air 6,2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67454

--- Comment #36 from Miek Gieben <miek at miek.nl> ---
This is while I go from full brightness to dark and bright again (after a
resume):

% for i in $(seq 0 10); do sleep 1; cat
/sys/class/backlight/intel_backlight/brightness; cat
/sys/class/backlight/intel_backlight/actual_brightness; echo "*" ; done
2550
2550
*
2210
2210
*
2040
2040
*
1860
1860
*
1860
1860
*
1860
1860
*
2040
2040
*
2370
2370
*
2370
2370
*
2370
2370
*
2550
2550
*

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