Created attachment 379254 [details]
Logfile: "/var/log/messages"

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.125 Safari/533.4

Scenarios:
1) KDE4 always freezes after user logon when a second monitor is connected to the notebook.

2) KDE4 often freezes after a second monitor was connected, while KDE session is currently running.

3) Sometimes KDE4 crashes by leaving the fullscreen mode viewing flashmovies (e.g. from youtube.com)in a browser like firefox or google chrome. This happens regardless of using an external display or not.

Reproducible: Always

Steps to Reproduce:
Scenario 1)
1. Connect second Monitor to the Notebook.
2. Boot the System
3. Logon to the KDE session.

Scenario 2)
1. Boot the system, a second monitor is not connected.
2. Start KDE4 session
3. Connect the monitor
4. Open a new window

Scenario 3)
1. Boot the system, a second monitor is not connected.
2. Start KDE4 session.
3. Open mozilla firefox browser for watching a flash movie (have fun).
4. Enter fullscreen mode.
5. Leave fullscreen mode.
Actual Results:  
As result of the crash, the system freezes and system interaction is not possible anymore(local console and ssh). A hardware reset is needed to resume the interaction with the system.

Expected Results:  
The Kernel should not freeze. ;-)

Hardware data (according sysinfo):
HP Compaq tc4200 Notebook
Processor: Intel(R) Pentium(R), M processor, 1.86GHz
Memory: 2.0 GiB
Grafics card: Intel Corporation, 915 GM

Operating System:
Kernel: Linux 2.6.34-12-desktop i686
Distribution: openSUSE 11.3 (i586)
KDE: 4.4.4 (KDE 4.4.4) "release 2"

Tested Kernels:
- Kernel 2.6.34-12-default 
- Kernel 2.6.34-12-desktop

#uname -a
Linux gf01.xx.xx.xx.de 2.6.34-12-default #1 SMP 2010-06-29 02:39:08 +0200 i686
i686 i386 GNU/Linux