i have the same bug on ubuntu karmic on my nc10 i found only one solution to change brightness with KMS,
first : find the device address (here 00:02.0) lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation Mobile 945GME Express Integrated Graphics Controller (rev 03) second : setpci -s 00:02.0 F4.B=66 (a value between 00 and FF, where FF is 100%) but this solution is not as simple as brightness keys, brightness applet, or even xbacklight ! the only possibility for me to made the brightness work, was disabling KMS with "nomodeset" as kernel parameter i hope a fix will come out to use both brightness and KMS -- Unable to adjust brightness (KMS bug) https://bugs.launchpad.net/bugs/388216 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