Comment 42 for bug 762918

I can confirm this on an Intel chipset. I have two laptops - a Sony Vaio with an Nvidia card, and a Dell Vostro V13 with an Intel card. Screensaver works perfectly fine on the nvidia system, and not once has a freeze happened. The freezes were happening every time with the Intel one, until I disabled the screensaver.

I can also confirm this with both 32-bit and 64-bit Natty Narwhal. I had 32-bit Natty on both systems, and I replaced them with 64-bit Natty on both. The nvidia works fine without freezes, while on the other one I haven't yet tried enabling the screensaver.

I do not think it has anything to do with a video application or banshee or whatever, since it has happened with me plenty of times when I have not been using anything other than emacs and evince. It definitely seems to be related to the xorg-xserver-video-intel driver.