http://bugzilla.kernel.org/show_bug.cgi?id=15368

           Summary: Battery charging status incorrect on Fujitsu Siemens
                    U9200 - DSDT error?
           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-Battery
        AssignedTo: acpi_power-batt...@kernel-bugs.osdl.org
        ReportedBy: rhowe.kernel...@siksai.co.uk
        Regression: No


Created an attachment (id=25150)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=25150)
output of acpidump

I have a Fujitsu Siemens U9200 laptop, and since I can remember, the battery
status is usually displayed incorrectly.

The change to the DSDT mentioned here solved the problem for me:

https://wiki.kubuntu.org/LaptopTestingTeam/FujitsuEsprimoU9200

Unfortunately, I don't know enough about ACPI to really know what the above
change actually does.

I have only tested this using the Debian kernel and will retest with mainline
if you think it is worth a shot.

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