Comment 28 for bug 366222

I thought I'd post here because, although there are other bug reports of freezes upon upgrading to Jaunty, this one sounds very similar to what I'm seeing.

Basically, I ran KDE on Kubuntu Intrepid more or less without any freezes, installed Jaunty RC without any apparent freezes (but didn't use it very long before upgrading). I upgraded to Jaunty final about two days ago, and all of a sudden today the system started hanging.

The first thing I noticed is that mouse clicks weren't responding and I started having problems with mouse focus (e.g., I would click on the foreground window and it would switch to a background window). The keyboard seemed to respond fine, however.

At first it involved only a couple of windows, but eventually it happened to all of the windows and I couldn't do anything and had to reboot.

Since, then, though, KDE is essentially unusable, with the same pattern ever since. It boots and loads KDE, and everything seems fine initially. The taskbar responds (e.g., it will minimize appropriately and appear with mouseover), but when I go to the KDE startmenu, applications won't open, and a terminal session manager plasmoid I have won't respond. I can open Firefox and Dolphin, but eventually I start having the same mouse problems with those applications, and the taskbar won't respond anymore.

I can get into a shell with CTRL+ALT+F1 as described above, but that's about it.

I've tried apt-get upgrade and everything seems upgradable.

The mouse is a USB mouse with Intel USB interface on the mobo.

It's a Dell XPS 420 system, Intel quad-Core2 Extreme processor 3GHz 1333FSB12MB

This is the info from above (I couldn't find all of it):

kernel version: 2.6.28-11-generic
Graphics Chip Mfgr: ATI
Graphics Chip Model: Radeon HD 3870
File System Type for /: ext3
Is this problem on a Laptop: No
Laptop mfgr:
Laptop model:

Is this problem on a Desktop: Yes
Desktop mobo mfgr: Dell (?)
Desktop mobo model: ?

using wireless: NO
ethernet card driver:

using wired: YES
ethernet card driver:

bios mfgr: ?
using Compiz: No
using Kde: Yes / 4.2.2
using Gnome (metacity): No