Public bug reported:
If the battery is critically low (so that the Unity battery indicator
has turned red already) and the AC adapter is plugged in, the display
backlight is turned off completely. The screen appears to be completely
black, looking at it closely however reveals that it is still on -
without any backlight. Shutting and reopening the lid as well as
shutting it down completely fixes the condition. This bug occurs
reproducibly on a Thinkpad T420s.
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: ac adapter backlight battery display
** Description changed:
- If the battery is critically low (so that the unity battery indicator
+ If the battery is critically low (so that the Unity battery indicator
has turned red already) and the AC adapter is plugged in, the display
backlight is turned off completely. The screen appears to be completely
black, looking at it closely however reveals that it is still on -
- without any backlight. This bug occurs reproducibly on a Thinkpad T420s.
+ without any backlight. Shutting and reopening the lid as well as
+ shutting it down completely fixes the condition. This bug occurs
+ reproducibly on a Thinkpad T420s.
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https://bugs.launchpad.net/bugs/921323
Title:
Display backlight is turned off completely when AC adapter is plugged
in while battery is critically low
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