http://bugzilla.kernel.org/show_bug.cgi?id=12681
Summary: s2ram: fails to wake up on Acer Extensa 4220 (SMP
disabled)
Product: ACPI
Version: 2.5
KernelVersion: 2.6.28-rc4-00012-g1cfe62c
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: EC
AssignedTo: acpi...@kernel-bugs.osdl.org
ReportedBy: sm...@bk.ru
CC: sm...@bk.ru
Latest working kernel version: 2.6.28-rc4-00011-g3ad4f59
Earliest failing kernel version: 2.6.28-rc4-00012-g1cfe62c
Distribution: ArchLinux (testing repository enabled)
Hardware Environment: Acer Extensa 4220 (Intel Celeron 550; Intel 965GM)
1. SMP disabled
Prior to 2.6.28-rc4-00012-g1cfe62c 's2ram -f' was working just fine. Since
1cfe62c8010ac56e1bd3827e30386a87cc2f3594 when trying to resume the laptop
lightens up for a moment, turns off for ~10 seconds, turns on for ~10 seconds
with the screen completely blank and HDD LID blinking, quickly turns off and
on, showing BIOS POST screen.
Reverting this 1cfe62c... allowed me to restore s2ram functionality on both
2.6.28.3 and the latest git (it was 45c82b5...).
Probably important note is that when I just had applied the patch (git diff -R
1cfe62c~1 1cfe62c >acpi-s2ram.patch) to my already built 2.6.28.3 and rebuild
the kernel, it didn't work. I had to 'make clean' the source tree in order for
the patch to take effect.
2. SMP enabled
With SMP enabled s2ram ceased to work long ago. Somewhere between May 28 (
a939098~1 was the last compilable and working version) and Jul 11 (d9fc3fd
fixed the last issue causing kernel panics). After reapplying d9fc3fd, 1a98fd1
and 55f2623 I managed to narrow down the interval to May 28-Jun 21 (f580366),
but this is still very large. Anyway, this is another bug.
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