Public bug reported:
Binary package hint: gnome-power-manager
I have a fresh installation of Hardy with the latest updates installed
on a Dell Inspiron 6400 laptop. The brightness settings (Fn+Up/Down)
work although they seem to skip a level each time.
'/proc/acpi/video/VID/LCD/brightness' tells me that it supports
brightness levels 12, 24, 36, 48, 60, 72, 84 and 100. Without gnome-
power-manager running pressing Fn+Up will transition up into each level
and back down again smoothly.
When gnome-power-manager is running increasing the brightness from 12 I
can only get levels 36, 60, 84 and 100. Decreasing the levels from 100 I
only get 72, 48, 24 and 12. Running gnome-power-manager with the verbose
option shows that when I press the brightness-up button once it is
recorded twice. I ran gnome-power-manager in a debugger thinking it was
a timing issue and it still happened.
I have included the output from pressing the brightness-up button
(Fn+Up) once below. This only happens when gnome-power-manager is
running and did not happen using Feisty. I have looked at the code and I
cannot see why the button event is triggered twice, I don't have any
experience of the code but if you can give me any ideas of where to
start I can look into this myself.
Thanks!
[hal_device_condition_cb] gpm-button.c:391 (00:11:48):
condition=ButtonPressed, details=brightness-up
[emit_button_pressed] gpm-button.c:335 (00:11:48): emitting
button-pressed : brightness-up
[button_pressed_cb] gpm-manager.c:999 (00:11:48): Button press event
type=brightness-up
[button_pressed_cb] gpm-srv-screensaver.c:167 (00:11:48): Button press
event type=brightness-up
[button_pressed_cb] gpm-backlight.c:563 (00:11:48): Button press event
type=brightness-up
[gpm_brightness_lcd_get_hw] gpm-brightness-lcd.c:116 (00:11:48):
GetBrightness returned level: 0
[gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (00:11:48):
Setting 1 of 7
[gpm_brightness_lcd_up] gpm-brightness-lcd.c:362 (00:11:48): emitting
brightness-changed (14)
[brightness_changed_cb] gpm-backlight.c:755 (00:11:48): Need to display
backlight feedback value 14
[gpm_feedback_display_value] gpm-feedback-widget.c:144 (00:11:48):
Displaying 0.140000 on feedback widget
[gpm_refcount_add] gpm-refcount.c:100 (00:11:48): refcount now: 1
[gpm_refcount_add] gpm-refcount.c:101 (00:11:48): non zero, so sending
REFCOUNT_ADDED
[brightness_changed_cb] gpm-backlight.c:759 (00:11:48): emitting
brightness-changed : 14
[button_pressed_cb] gpm-info.c:698 (00:11:48): Button press event
type=brightness-up
[hal_device_condition_cb] gpm-button.c:391 (00:11:48):
condition=ButtonPressed, details=brightness-up
[emit_button_pressed] gpm-button.c:335 (00:11:48): emitting
button-pressed : brightness-up
[button_pressed_cb] gpm-manager.c:999 (00:11:48): Button press event
type=brightness-up
[button_pressed_cb] gpm-srv-screensaver.c:167 (00:11:48): Button press
event type=brightness-up
[button_pressed_cb] gpm-backlight.c:563 (00:11:48): Button press event
type=brightness-up
[gpm_brightness_lcd_get_hw] gpm-brightness-lcd.c:116 (00:11:48):
GetBrightness returned level: 1
[gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (00:11:48):
Setting 2 of 7
[gpm_brightness_lcd_up] gpm-brightness-lcd.c:362 (00:11:48): emitting
brightness-changed (28)
[brightness_changed_cb] gpm-backlight.c:755 (00:11:48): Need to display
backlight feedback value 28
[gpm_feedback_display_value] gpm-feedback-widget.c:144 (00:11:48):
Displaying 0.280000 on feedback widget
[gpm_refcount_add] gpm-refcount.c:100 (00:11:48): refcount now: 2
[gpm_refcount_add] gpm-refcount.c:101 (00:11:48): non zero, so sending
REFCOUNT_ADDED
[brightness_changed_cb] gpm-backlight.c:759 (00:11:48): emitting
brightness-changed : 28
[button_pressed_cb] gpm-info.c:698 (00:11:48): Button press event
type=brightness-up
[gpm_refcount_auto_decrement] gpm-refcount.c:77 (00:11:50): refcount now: 1
[gpm_refcount_auto_decrement] gpm-refcount.c:74 (00:11:50): zero, so
sending REFCOUNT_ZERO
[gpm_feedback_close_window] gpm-feedback-widget.c:134 (00:11:50):
Closing feedback widget
** Affects: gnome-power-manager (Ubuntu)
Importance: Undecided
Status: New
--
Screen brightness double level changes
https://bugs.launchpad.net/bugs/207473
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