This issue is still present in Ubuntu 9.10, Karmic Koala. I have implemented the following workaround on my system, which is a persistent version of that in update 4 above.
ian@dash:~$ cat /etc/modprobe.d/asus-backlight-workaround.conf # Got this from Ubuntu bug 222171. install asus-laptop /sbin/modprobe --ignore-install asus-laptop; sleep 2; echo 5 > /sys/devices/platform/asus_laptop/ls_level
This is a bug in the asus-laptop kernel module.
This issue is still present in Ubuntu 9.10, Karmic Koala. I have implemented the following workaround on my system, which is a persistent version of that in update 4 above.
ian@dash:~$ cat /etc/modprobe. d/asus- backlight- workaround. conf platform/ asus_laptop/ ls_level
# Got this from Ubuntu bug 222171.
install asus-laptop /sbin/modprobe --ignore-install asus-laptop; sleep 2; echo 5 > /sys/devices/
This is a bug in the asus-laptop kernel module.