https://bugzilla.kernel.org/show_bug.cgi?id=56041
Summary: Disabling LCD on ARUBA causes hotplug loop Product: Drivers Version: 2.5 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) AssignedTo: drivers_video-dri@kernel-bugs.osdl.org ReportedBy: darktjm@gmail.com Regression: No
My hardware: a Gateway/Acer laptop with Radeon HD 7640G. Disabling the LCD (xrandr --output eDP --off) while the external display is being used causes some sort of hotplug event loop. 100% of one CPU's worth of CPU time is consumed, and X freezes every few seconds. For now, I have worked around by commenting out "queue_hotplug = true" in evergreen.c (case 0).
https://bugzilla.kernel.org/show_bug.cgi?id=56041
--- Comment #1 from Alex Deucher alexdeucher@gmail.com 2013-04-11 16:47:24 --- Created an attachment (id=98191) --> (https://bugzilla.kernel.org/attachment.cgi?id=98191) Possible fix
Does the attached kernel patch help?
https://bugzilla.kernel.org/show_bug.cgi?id=56041
Alex Deucher alexdeucher@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |alexdeucher@gmail.com
--- Comment #2 from Alex Deucher alexdeucher@gmail.com 2013-04-11 16:48:10 --- Make sure you power off your system completely before testing to make sure there are no residual register values.
https://bugzilla.kernel.org/show_bug.cgi?id=56041
--- Comment #3 from Thomas J. Moore darktjm@gmail.com 2013-04-12 03:43:14 --- Yes, that seems to have fixed it. Thanks.
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