Binary package hint: xserver-xorg-video-ati
Kubuntu Edgy
Hardware: HP omnibook vt6200, ati mobility radeon. Video driver is ati (issue is also with vesa driver). Laptop backlight stays always on. Screen blanking only makes display black but backlight stays on.
If I switch backlight off with "xset dpms force off" backlight will stay off 30-60 seconds, then it will switch back on.
With "sudo radeontool light off" backlight stays off.
here is xset -q
Keyboard Control:
auto repeat: on key click percent: 0 LED mask: 00000000
auto repeat delay: 250 repeat rate: 30
auto repeating keys: 00ffffffdffffbbf
fadfffdfffdfe5ef
ffffffffffffffff
ffffffffffffffff
bell percent: 50 bell pitch: 400 bell duration: 100
Pointer Control:
acceleration: 20/10 threshold: 2
Screen Saver:
prefer blanking: no allow exposures: yes
timeout: 130 cycle: 600
Colors:
default colormap: 0x20 BlackPixel: 0 WhitePixel: 16777215
Font Path:
/usr/share/fonts/X11/misc,/usr/share/fonts/X11/misc/,/usr/share/fonts/X11/Type1/,/usr/share/fonts/X11/100dpi/,/usr/share/fonts/X11/75dpi/
Bug Mode: compatibility mode is disabled
DPMS (Energy Star):
Standby: 180 Suspend: 180 Off: 180
DPMS is Enabled
Monitor is On
File paths:
Config file: /etc/X11/xorg.conf
Modules path: /usr/lib/xorg/modules
Log file: /var/log/Xorg.0.log
Same problem here with a radeon mobility 9700 with both radeon and fglrx driver.