http://bugzilla.kernel.org/show_bug.cgi?id=12878





--- Comment #35 from Eddy Petrișor <eddy.petrisor+lin...@gmail.com>  2009-04-16 
06:43:04 ---
(In reply to comment #34)
> (In reply to comment #33)
> > There is a last patch in bug #12011, could you try it?
> 
> I tried the patch over the 2.6.29 kernel and I got the same result. I made 
> sure
> ec_intr wasn't present in the boot command line.
> 
> Note that I don't seem to have any issues with battery status disappearing 
> with
> any of the kernels I tired which were newer 2.6.27 (including 2.6.27).

Oh, and the kernel was the 2.6.29 kernel with the patches proposed before in
this bug report:

commit a90b2eeeb208567241aa21eced696ec010a9b6cc
Author: Eddy Petrișor <eddy.petri...@gmail.com>
Date:   Tue Apr 14 09:20:05 2009 +0300

    merge modes and disable burst #2 (patch from #12011)

    Burst mode should be automatically disabled by controller, if it is not
    accessed for 400us. Now there is a delay of 550us and some are saying that
    550us is better. Thus, enabling of burst mode in first place seems to be a
    wrong move.

commit 8877cd8b24c26dfc7560f94d83b90e95e1d4d58f
Author: Eddy Petrișor <eddy.petri...@gmail.com>
Date:   Fri Apr 3 12:04:32 2009 +0300

    Use the RTC cmos area to track where suspend/resume hangs

commit 6fd63c2f584e62355675c1735020acb3e4fad76f
Author: Eddy Petrișor <eddy.petri...@gmail.com>
Date:   Tue Mar 24 11:02:59 2009 +0200

    Introduce kernel parameter acpi_sleep=s3_sci_enable

    some laptop requires SCI_EN being set directly on resume,
    or else they hung somewhere in the resume code path.

    We already have a blacklist for these lattops but we still needs
    this option, especially for debugging some suspend/resume problems.

    Signed-off-by: Zhang Rui <rui.zh...@intel.com>
    ---
     arch/x86/kernel/acpi/sleep.c |    4 ++++
     drivers/acpi/sleep.c         |    6 ++++++
     include/linux/acpi.h         |    3 +++
     3 files changed, 13 insertions(+)

commit 8e0ee43bc2c3e19db56a4adaa9a9b04ce885cd84
Author: Linus Torvalds <torva...@linux-foundation.org>
Date:   Mon Mar 23 16:12:14 2009 -0700

    Linux 2.6.29

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