[Bugme-new] [Bug 21322] New: no detection whether power cord is unplugged or not

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=21322

           Summary: no detection whether power cord is unplugged or not
           Product: ACPI
           Version: 2.5
    Kernel Version: 2.6.35
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Power-Battery
        AssignedTo: acpi_power-battery at kernel-bugs.osdl.org
        ReportedBy: c.ammeraal at gmail.com
        Regression: No


Created an attachment (id=35302)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=35302)
acpidump

Using Arch linux with KDE 4.5.2, most of the time unplugging the power cord to
my laptop is undetected: HP Pavilion dv9790ed. Only after cat
/proc/acpi/ac_adapter/ACAD/state the screen is dimming. This state, by the way,
is always correct.

A lot of information regarding this bug can be found here:  
https://bugs.kde.org/show_bug.cgi?id=233854,  with comments #8 and #11 coming
from me. To summarize: this happens on both Ubuntu (without Hal) with gnome,
and Arch (with Hal) with KDE, on the same hardware. Which leads me to conclude
it is a kernel-related issue. 

Linux laptop 2.6.35-ARCH #1 SMP PREEMPT Wed Sep 29 08:45:18 CEST 2010 x86_64
Intel(R) Core(TM)2 Duo CPU T7500 @ 2.20GHz GenuineIntel GNU/Linux

attached: acpidump

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