http://bugzilla.kernel.org/show_bug.cgi?id=15096
Summary: Resume lock up after "Loosen strictness of video bus
detection code"
Product: ACPI
Version: 2.5
Kernel Version: 2.6.32
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: zaj...@gmail.com
Regression: Yes
Resuming doesn't work for me anymore in 2.6.32. It did in 2.6.31. I test s2ram
from init 3 and I bisected problem to:
3a1151e3f124fd1a2c54b8153f510f1a7c715369 is the first bad commit
commit 3a1151e3f124fd1a2c54b8153f510f1a7c715369
Author: Stefan Bader <stefan.ba...@canonical.com>
Date: Fri Aug 21 11:03:05 2009 +0200
ACPI: video: Loosen strictness of video bus detection code
BugLink: http://bugs.launchpad.net/bugs/333386
Currently a video bus device must (beside other criteria) define _DOD and
_DOS methods to be considered a video device.
Some broken BIOSes prevented working backlight control by only defining
both
for one (non-existing bus) and only _DOD for the rest. With this patch in
place the other bus definitions were considered too and backlight control
started to work again.
Signed-off-by: Stefan Bader <stefan.ba...@canonical.com>
Acked-by: Zhang Rui <rui.zh...@intel.com>
Signed-off-by: Len Brown <len.br...@intel.com>
This commit gratefully introduced backlight control for me but causes
regression at the same time.
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