[Bug 53491] New: 'xset dpms force off' breaks backlight
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Thu Feb 7 22:20:10 PST 2013
https://bugzilla.kernel.org/show_bug.cgi?id=53491
Summary: 'xset dpms force off' breaks backlight
Product: Drivers
Version: 2.5
Kernel Version: latest from git
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI - Intel)
AssignedTo: intel-gfx-bugs at lists.freedesktop.org
ReportedBy: emailgrant at gmail.com
CC: intel-gfx-bugs at lists.freedesktop.org
Regression: No
The backlight on my Dell XPS13 ultrabook works if I use this patch:
https://patchwork.kernel.org/patch/2102971/
Whether or not I use the patch, the backlight stops working if I issue 'xset
dpms force off'. Issuing 'echo 0 >
/sys/class/backlight/intel_backlight/brightness' makes it work again.
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