Hi,
There has been an update recently for Ubuntu LTS. It is called "LTS Hardware Enablement Stack" aka 12.04.2.
https://wiki.ubuntu.com/PrecisePangolin ... ment_Stack
X is in version 1.13 and it appears that "disable screensaver" does not work at all.
I've reverted to 1.11 and everything was fine.
Could you look into it ?
Best Regards
Gregory