ditto on a Dell Inspiron 1440 -- still here. no workarounds that i know of
Dell XPS m1330 -- adding "acpi_backlight=vendor" to grub boot parameters resolves the issue ethan On Mon, Nov 5, 2012 at 8:55 AM, Pavel Malyshev <207...@bugs.launchpad.net>wrote: > Ubuntu 12.10.. The bug is still here. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/207473 > > Title: > Screen brightness double level changes on Dell laptops > > Status in The Linux Kernel: > 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: > Confirmed > > 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 > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/207473 Title: Screen brightness double level changes on Dell laptops To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/207473/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
