Public bug reported:
If the power source is removed from the laptop at any time while my
computer is running, and then re-plugged back in, the laptop fails to
recognize the source and continues to run off the battery.
The problem did not exist in Ubuntu until the latest kernel and nvidia
driver update (lucid-backports, kernel version 3.0.0-21-generic).
Some observations:
1. If the power source is unplugged, the indicator does not switch to the
"battery state" immediately, and only does so after about 4 seconds.
2. If, however, it does change to show the "battery" icon, it never switches
back to "charging" when plugged back in.
3. The only way to get the battery to start charging again is to remove the
battery when the laptop is plugged in (laptop switches off of course) and then
boot back in.
4. If the power source is reconnected before the power icon switches to the
battery icon, the system continues running like nothing ever happened, and
continues charging.
5. When the battery has fallen into the non-charging state, even a regular
power cycle will not get it to charge. Also, when in this state, the battery
does not charge in Windows either (Windows however shows that a power source
has been connected, but won't charge the battery). However, after doing the
remove battery when plugged in trick, and booting into Windows, Windows
properly recognizes when the adapter is plugged / unplugged and starts / stops
charging accordingly.
** Affects: gnome-power-manager (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1016388
Title:
Alienware M17xR3 continues running off battery when adapter is re-
plugged
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