Public bug reported:
Binary package hint: gnome-power-manager
Since I updated to from hardy to jaunty, the behavior of the screen
brightness on battery power is strange. On unplugging, the overall
brightness goes down (expected), but cannot be brought up to the level
without battery power (unexpected). I can still use the hotkeys to
adjust the brightness, but the intervall is in a lower range than on AC
power. Furthermore, with a period of about one minute, the brightness
goes down even further, bringing it the brightness to a level, where it
is impossible to work, even with the brightness set to maximum. In the
dark periods, the minimum setting seems to turn off the backlight
completely, while maximum is a bit brighter, but still unusable. Then
after about a minute it goes back to the brightness of "only some levels
below AC power, but usable", after a minute dark again and so on.
A similar behavior is described in two bugs: For one bug 284550.
However, in contrast to that report, I have the problem only when
running on battery power. Additionally, it says in that bug report that
a fix was released in gnome 2.24.4, but I still have the problem working
in gnome 2.26.1. Bug 325789 describes the same behavior also only on
battery power, but it claims that it doesn't occur any more in jaunty.
Therefore, I decided to file a new bug report.
I am working on a Samsung X20 with intel graphics chipset.
btw.: how do I link other bugs?
** Affects: gnome-power-manager (Ubuntu)
Importance: Undecided
Status: New
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[jaunty] screen brightness level on battery power unsteady and too dark
https://bugs.launchpad.net/bugs/373096
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