https://bugzilla.kernel.org/show_bug.cgi?id=51731
Summary: Kernel Panic on backlight brightness hotkey usage
(Fujitsu Siemens Amilo Pi 2550)
Product: ACPI
Version: 2.5
Kernel Version: >= 3.4
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Video
AssignedTo: acpi_power-vi...@kernel-bugs.osdl.org
ReportedBy: i-...@web.de
Regression: No
Created an attachment (id=89281)
--> (https://bugzilla.kernel.org/attachment.cgi?id=89281)
acpidump
I am refering to an error that occurs since I have moved to Lubuntu 12.04.
Everytime I try to vary the backlight brightness the complete system freezes
on a kernel panic screen (No SysReq-Commands are available).
I would have reported this bug to the Ubuntu launchpad but apport advised me to
report Upstream kernel errors directly to kernel.org.
Furthermore I have tested various kernels from the Ubuntu kernel repo
(http://kernel.ubuntu.com/~kernel-ppa/mainline/) to specify in which kernel
revision the bug occured at first.
Last working version: 3.3.8 (folder: v3.3.8-quantal/)
/proc/version:
Linux version 3.3.8-030308-generic (apw@gomeisa) (gcc version 4.6.3
(Ubuntu/Linaro 4.6.3-1ubuntu5) ) #201206041356 SMP Mon Jun 4 17:57:29 UTC 2012
First non working version: 3.4.0 (folder: v3.4-quantal/)
/proc/version:
Linux version 3.4.0-030400-generic (apw@gomeisa) (gcc version 4.6.3
(Ubuntu/Linaro 4.6.3-1ubuntu5) ) #201205221131 SMP Tue May 22 15:32:22 UTC 2012
Several kernels above 3.4.0 up to 3.7.x showed the same behaviour.
The same kernel problems occured in Fedora 18 Beta.
Please ask for further needed information.
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