Comment 0 for bug 1254867

Upon waking my computer from sleeping, certain games will perform less responsively than before putting the computer to sleep. To be more descriptive, the games' visuals will appear to lag slightly (milliseconds) behind my input from the keyboard and mouse.

This occurs most pronouncedly with the game Awesomenauts, while slightly improving in certain parts of the level (perhaps less CPU-intensive areas). The problem occurs, albeit less pronouncedly, with other games such as Counter-Strike: Source and Left 4 Dead 2 (if not all of Valve's Source games), Beat Hazard, and perhaps other games in my Steam library I have yet to try.

Restarting the computer rectifies the problem, and renders the games snappy and responsive once again.

It is unclear whether the games themselves becomes less responsive (CPU-wise), or whether it is the result of another link in the chain (input, GPU, RAM, HDD).

Ubuntu 12.04, 32-bit
M4A78LT-M LE Motherboard
AMD Athlon II X4 645, 3.10 GHz
7.9 GB RAM
Nvidia GeForce GT 240
Nvidia Proprietary Driver Version 319.32
NV-CONTROL Version 1.29
Linksys WUSB54GC v1 802.11g Adapter [Ralink RT73]
Hewlett Packard USB Keyboard
Hewlett Packard PS/2 Mouse