Bug 226392

Summary: broken login screen to KDM after KDE SC 4.4 upgrade
Product: [Unmaintained] kdm Reporter: dmatt <xdarkmatter>
Component: generalAssignee: kdm bugs tracker <kdm-bugs-null>
Status: RESOLVED DOWNSTREAM    
Severity: crash CC: benoitg, firebringer11, jr
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description dmatt 2010-02-11 21:33:49 UTC 
Version:            (using KDE 4.4.0)
OS:                Linux
Installed from:    Ubuntu Packages

After upgrade to KDE 4.4.0 (from KDE 4.3.5) in Kubuntu 9.10, screen goes blank just before kdm login screen (sometimes it is possible to see login screen for short moment). It is possible to move with mouse cursor, but it is huge. I guess screen resolution is down to something like 640x480. Attempting to switch to ttys show color patterns and system appears to be frozen. It is possible to reboot with ALT+SYSRQ+B. 

After discussion with others affected on Kubuntu channel we found following workarounds:
- immediate restart of KDM with ALT+E, afterwards it works
- switching to other tty and back to tty7
- using GDM or other login manager instead of KDM
- boot to recovery console and start KDM manually

Things which did not help:
- reinstalling KDM, kubuntu-desktop, xorg-driver-fglrx
- removing/renaming .kde folder

All available updates are applied.
Comment 1 Benoit Grégoire 2010-02-11 21:38:41 UTC 
I also experience this bug.  My video cart is an ATI radeon mobility X1600, using tradeon driver.  Problems occurs with both the version in karmic and the snapshot from xorg-edgers, making it somewhat unlikely to be driver related.
Comment 2 E.T. Anderson 2010-02-11 22:10:59 UTC 
This effects me too. I've go nvidia graphics on karmic.
Comment 3 Jonathan Riddell 2010-02-12 00:01:40 UTC 
Closing as downstream.  This is caused by a change in the setup in Kubuntu.  A reboot should fix it.  Open a bug at http://launchpad.net/ubuntu/+source/kdebase-workspace if you still have problems.