I found a solution using xrandr on http://yyhh.org/node/12 .
Simply using: xrandr --output LVDS --off -- fn+f8 (crt/lcd switch) does nothing https://bugs.launchpad.net/bugs/133568 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
