https://bugzilla.kernel.org/show_bug.cgi?id=33672





--- Comment #17 from Lan Tianyu <tianyu....@intel.com>  2011-07-07 06:44:55 ---
>From the dmesg, the battery present rate which is returned from the DSDT in the
Bios is always zero. This is caused by the hardware or bios.

Please attach the output of acpidump.
(In reply to comment #10)
> I have tested many kernels (logs attached):
> gnome power manager estimates time remaining on battery correctly for kernels
> 2.6.27 and 2.6.28, but starts to fail with 2.6.29.
It is very strange that gpm can estimates remaining time with the preset rate
zero.
          remaining time = remaining capacity / present rate;

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