Public bug reported:
Binary package hint: acpi-support
Steps to reproduce:
Laptop (Dell Inspiron 2200 with an after-market AC adapter)
1) unplug AC power
2) replug AC power
Resulting symptoms: Frequently (probably 70% of the time)
1) Pulsing, Flashing, beating, flickering display (looks like the brightness
level is popping up and down rapidly)
2) The battery indicator still shows battery as discharging.
3) The battery indicator's Power Statistics (usually accessed by clicking
battery status on popdown menu) and Preferences screen are unavailable. If you
click on the battery status area you can see a faintly visible 3D outline of a
transparent dialog box the size of the normal popdown menu item, but no item is
visible).
4) results of
upower --dump
cat /proc/acpi/battery/BAT0/state
and
cat /proc/acpi/ac_adapter/AC/state
sometimes match what the battery indicator displays and sometimes not. This is
what leads me to think it is some kind of acpi event or other power event not
being properly processed on a deeper level than just the gnome-power-manager or
the battery indicator malfunctioning. I'll try and provide more details of this
at a later time.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: acpi-support 0.136
ProcVersionSignature: Ubuntu 2.6.32-22.36-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
Architecture: i386
Date: Tue Jul 13 22:48:06 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
LANG=en_US.utf8
SHELL=/bin/bash
SourcePackage: acpi-support
** Affects: acpi-support (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 lucid
--
Unplug, replug AC on laptop, screen pulses, battery indicator not updated,
power statistics and preferences screens unavailable
https://bugs.launchpad.net/bugs/605290
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