Same problem on a Samsung Q45 with nVidia 8400, Ubuntu 8.04 LTS. The hotkeys do not seem to generate ACPI events, but regular keycodes. I tried setting keycodes (after sourcing . /usr/share/hotkey-setup/key-constants) in /etc/rc.local): setkeycodes e002 $KEY_VIDEOOUT # Fn-F4 External VGA toggle setkeycodes e004 $KEY_LIGHT # Fn-F5 Backlight toggle setkeycodes e008 $KEY_BRIGHTNESSUP # Fn--> LCD Brightness up setkeycodes e009 $KEY_BRIGHTNESSDOWN # Fn--> LCD Brightness down
When I run "lshal -m", I see that the keycodes are correctly mapped, but the hotkeys still do nothing. Also, switching from battery to power does not seem to change my screen brightness, and the Gnome brightness applet does not work either. I have the same problems whether using the nVidia or Xorg driver, so I would suspect problems with the ACPI configuration: "cat /proc/acpi/video/NVID/LCD/brightness" outputs levels: 10 30 40 50 60 70 80 100 current: 0 "cat /proc/acpi/video/NVID/LCD/state" outputs state: 0x1f query: 0x00 "sudo echo 10 > /proc/acpi/video/NVID/LCD/brightness" gives me a "permission denied" error, even though the proc file seems writable for root, and adding "xhost +" (just in case) does not seem to change a thing. I did not find any Samsung-ACPI module, so I wonder if the generic ACPI handling works for this machine. -- backlight brighness control does not work (Samsung Q45 with Nvidia GForce 8400M) https://bugs.launchpad.net/bugs/146710 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
