Bug 469231

Summary: Garbage on screen during/after login
Product: [openSUSE] openSUSE 11.1 Reporter: B. Wielens <Uniacke1>
Component: KDE4 WorkspaceAssignee: E-mail List <kde-maintainers>
Status: RESOLVED DUPLICATE QA Contact: E-mail List <qa-bugs>
Severity: Minor    
Priority: P4 - Low CC: forgotten_bSWU20Bh6O
Version: Final   
Target Milestone: ---   
Hardware: x86   
OS: openSUSE 11.1   
Whiteboard:
Found By: --- Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---
Attachments: Picture of garbage on laptop.

Description B. Wielens 2009-01-25 12:11:42 UTC
Created attachment 267499 [details]
Picture of garbage on laptop.

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-GB; rv:1.9.0.5) Gecko/2008121300 SUSE/3.0.5-1.1 Firefox/3.0.5

On dual-screen setup, there is garbage displayed on the unused monitor when the login manager is displayed. Logging in causes it to appear on both screens until the KDE splash appears and KDE subsequently loads. System operates normally.

This does not seem to be driver related, as my main desktop does this (nvidia driver) and also my laptop (single screen, shows garbage briefly after and before KDM appears) which uses an Intel 945 chipset for graphics.


Reproducible: Always

Steps to Reproduce:
1.Boot SuSE on dual-monitor system or single monitor system
2.If single monitor, enter login credentials and press enter
3. Observe garbage/random pattern/noise on screen.
Actual Results:  
See attached photo.

Expected Results:  
Simply a black screen as happened in previous versions of SuSE, until desktop/splash appear.
Comment 1 Stefan Dirsch 2009-01-25 19:52:34 UTC
Sounds display manager related to me. Does this also happen when using xdm as displaymanager? Set DISPLAYMANAGER to "xdm" in /etc/sysconfig/displaymanager and 
run 'rcxdm restart' on the linux console afterwards.
Comment 2 B. Wielens 2009-01-25 22:36:41 UTC
You are correct- it is a kdm4 issue. Garbage does not appear on using xdm or kdm3. (however, these do not use SuSE theme).
Comment 3 B. Wielens 2009-02-06 18:31:08 UTC
Further update:
Issue appears to be related to contents of video memory- on my desktop, parts of the garbage contain various pieces of icons, wallpaper, etc.
If I reboot to windows, and back to SuSE, the garbage contains my Windows wallpaper and icons.

Problem is caused by splash screen window- garbage is gone the moment it disappears.
Perhaps clearing VRAM before drawing splash screen?
Comment 4 Forgotten User bSWU20Bh6O 2009-02-06 18:56:13 UTC
I can confirm this behavior on several different machines.
Comment 5 Forgotten User bSWU20Bh6O 2009-02-06 20:00:20 UTC
This is a duplicate of #461871

*** This bug has been marked as a duplicate of bug 461871 ***