1. the specific steps or actions you took that caused you to encounter the problem
No particular actions required to reproduce the problem. It's always reproducible in a fresh ubuntu 11.10 installation or 12.04 installation, with unity / gnome / xfce desktop environment, when the system has a backlight panel available (laptop). 2. the behavior you expected Brightness should remain the same value after entering screen option in system settings. 3. the behavior you actually encountered (in as much detail as possible) Brightness is toggling to its inverted value when entering screen option in system settings. Provided an example: set brightness to 70%. Then enter screen option in system settings and it becomes 30%. Go back without changing the value and enter again. It's 70% now. And so on. As stated in the original post: "echo 8 > /sys/class/backlight/acpi_video0/brightness" "cat /sys/class/backlight/acpi_video0/actual_brightness" outputs 2. It should output 8. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/969143 Title: Brightness bar is inverted in gnome settings Status in “gnome-settings-daemon” package in Ubuntu: Incomplete Bug description: /sys/class/backlight/acpi_video0/actual_brightness and /sys/class/backlight/acpi_video0/brightness have inverted values. For example, if max_brightness is 10, when we "echo 10" into brightness, "cat actual_brightness" displays 0.... 7 becomes 3, 8 becomes 2, and so on. When entering "Screen" in System settings, the brightness behaves the same way. We put the bar at max, and accept, then enter "Screen" again and is at min. Enter again, and is at max. 70% becomes 30% alternatively, with only 50% remaining the same between several retries (for obvious reasons...) This might have something to do with other brightness issues reported. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/969143/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
