FS#27054 - [linux]Kernel Panic AfterTurning Off Monitor Backlight

Attached to Project: Arch Linux
Opened by ethan (rakka001) - Friday, 18 November 2011, 19:02 GMT
Last edited by Tobias Powalowski (tpowa) - Wednesday, 22 February 2012, 16:35 GMT
Task Type Bug Report
Category Packages: Core
Status Closed
Assigned To Tobias Powalowski (tpowa)
Thomas Bächler (brain0)
Architecture x86_64
Severity Critical
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:

After upgrading to the 3.1 kernel when turning off the monitor on a Lenovo y550p laptop (using function keys or leaving idle till power settings turn off monitor) results in a kernel panic.

The same bug is also documented here, with appropriate pictures:
https://bugzilla.redhat.com/show_bug.cgi?id=748210

This is not related to hibernation or sleeping the machine, only with the monitor as far as i can tell.

Additional info:
Kernel: 3.1.1-ARCH (x86_64)

Steps to reproduce:
1) Turn off monitor either through the function keys or by letting the system idle long enough for power settings to turn it off.
2) Attempt to turn the monitor back on.
This task depends upon

Closed by  Tobias Powalowski (tpowa)
Wednesday, 22 February 2012, 16:35 GMT
Reason for closing:  Upstream
Comment by Ukyoi D (ukyoi) - Friday, 09 December 2011, 10:18 GMT
Also happens on x86. But it seems happen when turn on the monitor but not turn it off.
Comment by Jelle van der Waa (jelly) - Sunday, 18 December 2011, 17:08 GMT
And happens with 3.1.5? Try to contact kernel developers about this issue

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