Comment 19 for bug 477256

I'd like to clarify a couple of things, if I may.

I think that desktop effects are already turned off. I'm not that familiar with Xubuntu, and I'm just running with the default settings. The compositor is turned off in the Window Manager Tweaks application. Is there something else I need to do as well?

I've never had the computer hang if I leave it and do nothing, even when logged in. I seem to have to be doing something active such as scrolling through documents or changing tabs in Firefox. How long would I need to leave inactive it to be sure?

So far, the new settings have meant I can actually use the computer for several hours. There is still this mysterious sudden blanking of the screen, but it's not a freeze or xserver crash and touching the touchpad or pressing an arrow key reactivates it.

By the way, I had to uninstall the xorg-edgers version of xserver-xorg-video-intel because it wouldn't let me boot with acpi=off. On boot up a rapidly blinking text message would appear and the computer hung. I didn't make a note of it, unfortunately.