[Bug 58181] New: Maximum sscreen brightness capped at 80 under gma500
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Tue May 14 23:44:53 PDT 2013
https://bugzilla.kernel.org/show_bug.cgi?id=58181
Summary: Maximum sscreen brightness capped at 80 under gma500
Product: Drivers
Version: 2.5
Kernel Version: 3.9.2
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: low
Priority: P1
Component: Video(DRI - Intel)
AssignedTo: intel-gfx-bugs at lists.freedesktop.org
ReportedBy: bruno.r.dias at gmail.com
CC: intel-gfx-bugs at lists.freedesktop.org
Regression: No
As of the 3.9 kernel, the gma500 driver now properly supports setting the
screen brightness, and the brightness keys work as intended, with one
exception: The brightness is maxed out at 80.
I can set the brightness to 100 (The actual maximum) by writing to
sys/class/backlight/psb-bl/brightness, as normal, but the actual brightness+
key won't raise it over 80. In a possibly unrelated issue, disconnecting or
connecting the AC adapter causes the brightness level to reset to 80, if it is
higher than 80.
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