Red Hat Bugzilla – Bug 590811
Thinkpad T400, Radeon HD 3400 with external monitor on DVI - X11 crashes
Last modified: 2010-12-03 09:51:04 EST
Description of the problem:
When I connect a external monitor to my Thinkpad T400 with the ATI Radeon HD 3400 active, first everything works fine (dual-head), but sometimes randomly X11 starts to hang. The only thing that I can do then is move the cursor around, but neither click anything nor open a terminal via keyboard shortcuts. The only solution I found is to reboot...
Everything works fine if I use the laptops internal monitor only.
Version-Release number of selected component (if applicable):
kernel: Linux version 184.108.40.206-127.fc12.i686.PAE
Desktop Environment: KDE 4.4.2
Screen resolution: 1440x900 & 1280x1024
connect Thinkpad to a docking station
connect your DVI monitor to the dock
log on to KDE
surf the web
watch X11 crash
Please re-test using an up-to-date Kernel (kernel-220.127.116.11-99.fc12).
* Do you have desktop-effects enabled in KDE?
* Does it also crash when using gnome?
* Do you have mesa-dri-drivers-experimental installed?
in GRUB and rebooted.
Anyway X11 crashed. The external screen went black and the laptop screen went completely red, yellow and some other colors, too.
It also crashes when I use gnome.
I think desktop effects are not enabled in KDE.
mesa-dri-drivers-experimental is not installed.
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