Created attachment 41002 [details] Photograph of black screen of death Removal of battery while plugged into AC reliably crashes this laptop (Sony Vaio SZ650). This bug was not present in the last RC (-rc5).
3138b32d5e0998ba3cbd1c74bdc1887d74c5279b is the first bad commit commit 3138b32d5e0998ba3cbd1c74bdc1887d74c5279b Author: Zhang Rui <rui.zhang@intel.com> Date: Wed Dec 8 10:40:49 2010 +0800 ACPI battery: update status upon sysfs query Sometimes the Battery driver doesn't get notifications when it's plugged/unplugged. And this results in the incorrect Battery status reported by the power supply sysfs I/F. Update Battery status first when querying from sysfs. http://marc.info/?l=linux-acpi&m=128855015826728&w=2 Tested_by: Seblu <seblu@seblu.net> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> :040000 040000 2b1ce2e308091d46569b806457607f6a0f2de120 3f49caed5e8dbaec51cad9fb2bfb87b33d3e1333 M drivers
I see this crash too, and can confirm reverting this commit makes it go away. revert added to acpi-test tree.
Fixed by http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cde44d1740bcb3dcfecbf792a71826431e61686e .
Hello, why just revert the commit and not apply the patch proposed by Borislav Petkov on LKML? The original patch was to fix an issue with sysfs reporting of a value. You can see details on "Bad AC adaptateur value trought sysfs" in linux-acpi mailing list.
re: comment #4 In the release cycle, -rc7 is not a time to try new fixes, it is a time to revert patches that caused regressions. The new attempt at a correct fix can be applied in the merge window of the subsequent release.