Hi Chris, Can you just try loading the sony-laptop module and not the sony-pi module. It wasn't clear if this is what you tried when testing with the Gutsty Gibbon 7.10 LiveCD. It is my understanding that sony-pi has been obsoleted in favor of using sony-laptop. You can even see the following message in your dmesg output:
sonypi: please try the sony-laptop module instead and report failures, see also http://www.linux.it/~malattia/wiki/index.php/Sony_drivers Please report back your results. Thanks! ** Changed in: linux-source-2.6.22 (Ubuntu) Status: New => Incomplete -- Screen Brightness adjustment fails for Sony VAIO VGN-AR250G https://bugs.launchpad.net/bugs/152095 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs