Hi Christopher,
I eventually managed to find the fix commit (this took me ages).
$ git bisect bad
751109aad5834375ca9ed0dcfcd85a00cbf872b5 is the first bad commit
commit 751109aad5834375ca9ed0dcfcd85a00cbf872b5
Author: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
Date: Thu Jun 5 22:47:35 2014 +0200
ACPI / video: Change the default for video.use_native_backlight to 1
Now that we're hoping to have resolved all of the problems with
video.use_native_backlight=1, make that the default at last.
Link: http://marc.info/?l=linux-acpi&m=139716088401106&w=2
Signed-off-by: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
:040000 040000 d8f9ae057c052cd94f1adcfc0b298db2c728a315
933b38080034b141fc0c31f54f38f5b232f69c17 M drivers
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Title:
[Toshiba Satellite Z930-164] Backlight control does not work, but
there are entries in /sys/class/backlight
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