Guillaume Millet, ok. It looks like in Saucy nouveau just failed to enable the discrete card altogether.
Despite this, in your Raring install, if you uninstall Bumblebee (which isn't provided by a supported Ubuntu repository [1]), remove all non- default kernel parameters (ex. video.use_bios_initial_backlight=0), and switched to the nvidia drivers [2], are you then able to adjust your backlight without any further modifications? [1] https://wiki.ubuntu.com/Bumblebee#Installation [2] https://help.ubuntu.com/community/BinaryDriverHowto/Nvidia#NVIDIA_drivers_provided_by_the_Ubuntu_repositories -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1178796 Title: [Asus UL80VT] Backlight control does not work, but there are entries in /sys/class/backlight To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1178796/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
