Hi Kamal, still doesn't work for me. I have an Acer travelmate 4230-6704 and can't change lcd brigthness. My Fn key is not working too (keyboard problem).
tried echo -n 100 > /proc/acpi/video/VGA/LCD/brightness sudo setpci -s 00:02.0 F4.B=FF I'm using Ubuntu Natty with gnome-power-manager version 2.32.0-2ubuntu2+kamal~backlight2~n and linux kernel 2.6.38-8.41+kamal~mjgbacklight3. lspci 00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03) 00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03) 00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03) lsmod | grep ^i915 i915 515415 3 rodmra@tm4230:/proc/acpi$ ls ac_adapter battery button event wakeup rodmra@tm4230:/sys/class/backlight$ ls intel_backlight rodmra@tm4230:/sys/class/backlight/intel_backlight$ ls actual_brightness brightness max_brightness subsystem uevent bl_power device power type Thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/568611 Title: Screen brightness control fails on Dell Studio 1558 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
