Comment 3 for bug 1178026

Description of problem:
Xorg freezes after the system is several minutes idle.

Hardware:
- HP envy 23
- Video graphics: Radeon HD 7450A
- Multi-touch enabled 58.42 cm (23 inch) diagonal widescreen full high-definition LED backlit display
- Details on:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c03683196&cc=ad&dlc=en&lc=en&jumpid=reg_r1002_usen_c-001_title_r0001#N1445

Version-Release number of selected component (if applicable):
Freeze occures in base installation of Fedora 18 as well as in updated version of Fedora 18 on the 03.04.13

How reproducible:
Always reproducible. System freezes after some minutes idle.
After being frozen, Strg + Alt + F1 does not lead to a new shell and the system needs to be rebooted by switching of power.

Additional info:
The bug could be a duplicate of
https://bugzilla.redhat.com/show_bug.cgi?id=928549