Hello, I am using 3.8.0.26 on Kubuntu 13.04 (KDE) Samsung Laptop and currently using "acpi_osi=Linux acpi_backlight=vendor" to enable backlight control. Whenever I log off, the controls are disabled again and I need to run intel_backlight. Another problem is power profiling. Whatever I set dimming and/or backlight off durations. It automatically turns it off in 5 minutes (even I totally disable it).
Do you have any idea why the problem is still not solved? -- 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/568611 Title: Screen brightness control fails on Dell Studio 1558 Status in “alsa-driver” package in Ubuntu: Invalid Status in “linux” package in Ubuntu: Fix Released Bug description: Attempts (on a current Lucid beta) to control the screen brightness on my Dell Studio 1558 fail with the following errors reported in dmesg: [ 1162.236365] ACPI: Failed to switch the brightness [ 1162.379144] ACPI: Failed to switch the brightness [ 1162.538226] ACPI: Failed to switch the brightness [ 1162.667358] ACPI: Failed to switch the brightness [ 1162.784171] ACPI: Failed to switch the brightness This is true both for the keyboard's brightness controls (Fn-F4, Fn-F5) and for a gnome-brightness-applet on the panel. Output of acpidump, dmesg and lspci is attached. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/568611/+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
