FOUND THE SOLUTION!!!! You have to edit the file
/etc/modprobe.d/blacklist and add at the end of the file: blacklist video Save and restart, and thats all! -- [hardy] [regression] LCD brightness control (Dell) no longer works https://bugs.launchpad.net/bugs/212733 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