kernel-packages team mailing list archive

[ethanay <ethan.y.us@xxxxxxxxx>]

Is this a HAL problem?  It's still a problem in 14.04 LTS...

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/207473

Title:
  Screen brightness double level changes on Dell laptops

Status in Linux:
  Fix Released
Status in hal package in Ubuntu:
  Invalid
Status in kde-guidance package in Ubuntu:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in hal source package in Hardy:
  Invalid
Status in kde-guidance source package in Hardy:
  Fix Released
Status in linux source package in Hardy:
  Invalid

Bug description:
  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 try to 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

To manage notifications about this bug go to:
https://bugs.launchpad.net/linux/+bug/207473/+subscriptions