adding "acpi_backlight=vendor acpi_osi=linux" to grub boot options: a. fully fixes this problem in a Dell Inspiron 1545 running 14.04 (all behavior normal and as expected, including indicator popups for brightness adjustment) b. partially fixes the problem in a Dell Inspiron 1440 running 12.04 (full access to all brightness levels via dedicated buttons, indicator pops up but does not visually exhibit a brightness level change)
ethan “A society grows great when its elders plant trees whose shade they know they shall never sit in.” -- an ironic Greek proverb On Sun, Aug 30, 2015 at 3:30 AM, Pavel Malyshev <207...@bugs.launchpad.net> wrote: > Just FYI: > The bug, which Ubuntu cannot fix for 7 (SEVEN!!!) years, was fixed in > Fedora in 1.5 months: https://bugzilla.redhat.com/show_bug.cgi?id=1141525 > > ** Bug watch added: Red Hat Bugzilla #1141525 > https://bugzilla.redhat.com/show_bug.cgi?id=1141525 > > -- > 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 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 > -- 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 -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
