[Aemstel]

Hmm, there is a screensaver in xorg which you can disable. However, it's weird that it only happens when playing roms.

Anyway, it won't hurt to try and disable it. To do so, add this to /etc/X11/xorg.conf:

Section "ServerFlags"
Option "BlankTime" "0"
Option "StandbyTime" "0"
Option "SuspendTime" "0"
Option "OffTime" "0"
EndSection

[slacker666]

Getting the xbox360 controller was pretty easy, just do the following commands in terminal:
sudo add-apt-repository ppa:grumbel/ppa
sudo apt-get install xboxdrv xboxdrv-stable

then run:
sudo xboxdrv --detach-kernel-driver --mouse
and it should be working fine

[Plaguester]

Hmm, there is a screensaver in xorg which you can disable. However, it's weird that it only happens when playing roms.

Anyway, it won't hurt to try and disable it. To do so, add this to /etc/X11/xorg.conf:

Section "ServerFlags"
Option "BlankTime" "0"
Option "StandbyTime" "0"
Option "SuspendTime" "0"
Option "OffTime" "0"
EndSection

Don't do that. You won't be able to use any power saving features at all. Rather, use this script to launch ZSNES (or whatever) and the power saving options will only be turned off while you have the emulator running:

Code:

#!/bin/bash

# turn off screensaver/screenblank
xset s off

# turn off dpms
xset -dpms

# launch ZSNES
/usr/bin/zsnes -s -v 22 "$1"

# turn on dpms
xset +dpms

# turn on screensaver/screenblank
xset s on

Then set XBMC to launch the script (make sure to give it execute permissions: chmod +x scriptFile) and use the rom as a single argument.