Public bug reported:
Binary package hint: gnome-power-manager
I have checked other bug reports on the subject, and it seems that this
is different. I have a toshiba M400 tablet. In edgy, I could set
brightness using the laptop hotkeys and using gnome-power-manager (on
battery).
In feisty, I can still set brightness using the laptop hotkeys, after
bug #77026 was closed, but if I use the slider in gnome-power-manager,
the screen flashes like the brightness was set to a certain value and
then immediately reset to a default value, and nothing happens. If I
unplug AC _before_ setting a value for the on battery brightness, then
screen is dimmed, and if I replug, brightness is raised, however if I
move the slider, then on battery brightess won't change anymore.
I ran gnome-power-manager --no-daemon --verbose and got:
[gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:167 (13:39:58):
SetBrightness failed!
[gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (13:39:58):
Setting 5 of 7
[gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:162 (13:39:58): ERROR:
Too many arguments in reply; expected 0, got 1
*** WARNING ***
[gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:167 (13:39:58):
SetBrightness failed!
[gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (13:39:58):
Setting 6 of 7
[gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:162 (13:39:58): ERROR:
Too many arguments in reply; expected 0, got 1
*** WARNING ***
[gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:167 (13:39:58):
SetBrightness failed!
[gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (13:39:58):
Setting 7 of 7
[gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:162 (13:39:58): ERROR:
Too many arguments in reply; expected 0, got 1
** Affects: gnome-power-manager (Ubuntu)
Importance: Undecided
Status: Unconfirmed
--
[feisty] regression: gnome-power-manager is unable to set brightness
https://launchpad.net/bugs/84523
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