Same problem here on an AMD A4-5300 APU using the radeon driver. Freezing particularly occurs when I scroll in firefox. Interestingly, when using the chromium-browser instead, this problem occurs much less frequently. As soon as the freeze occurs, unity does not respond to mouse and keyboard input any longer. However, I can use magic SysRq keys Alt + Print + REISUB to reboot my computer. So, the kernel (3.0.8-5) is still alive. It would be great, if someone could figure where this annoying problem is located.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1102660 Title: Ubuntu Raring Hard Freezes with AMD Driver Status in “xorg” package in Ubuntu: Confirmed Bug description: This bug is simple to explain, but hard to figure out what specifically is causing it. While using the computer, Ubuntu will frequently (within 5-10 minutes of use) hard freeze. I am unable to move the mouse, CTRL ALT F whatever to a virtual terminal, use the keyboard, and the power button doesn't respond unless I do a hard shutdown. This could be a bug with the kernel, Xorg, or compiz. Or even something else. I have no clue to as to what's causing this, so I will upload some log files from /var/log and provide my kernel version, graphics card, and more system info if necessary. This courts frequently on raring, but also happened occasionally on Quantal. But that's another bug report. Every package is up to date. I noticed this happened only on quantal when I manually upgraded to the mainline kernel. So it could also be a kernel bug. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1102660/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp