adding to my above comment... The replacement lid.sh only works for shorter periods of time. When the lid is closed for longer periods, the screen is not brought back to life.
The fix is to 1. open the lid 2. walk over to another computer and ssh into the laptop 3. type the following line of command vbetool dpms on The laptop screen is brought back to life. You could also blind-type the same commands on your laptop. So it is clear that the commands in the lid.sh script is working. So the trouble is clearly with the triggering mechanism. -- Notebooks freezes after closing lid or pressing some FN key combination https://launchpad.net/bugs/65027 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
