Solved by a kernel and bios update (respectively 2.6.28-5 and resvision A04).
** Changed in: linux (Ubuntu) Status: Incomplete => Fix Released -- /sys/class/backlight/ empty on a dell 9'' https://bugs.launchpad.net/bugs/318603 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