[Bug 291033] New: High xorg CPU usage when switch screen OFF

[parcours.lingual at gmail.com]

https://bugs.kde.org/show_bug.cgi?id=291033

           Summary: High xorg CPU usage when switch screen OFF
           Product: kde
           Version: 4.7
          Platform: Archlinux Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: parcours.lingual at gmail.com


Version:           4.7 (using KDE 4.7.4) 
OS:                Linux

Hello

Xorg CPU usage is really high when i switch the screen OFF with media keys
(Fn+F6) and the mouse becomes really slow for about 5-10 seconds.

On KDE forums, with the help of forum moderator, we have managed to narrow the
problem down to kded4, more specifically - Display Management change monitor.
When i turn this service down everything works fine.

Here is my link to forum post:
http://forum.kde.org/viewtopic.php?f=107&t=98394

Xorg.0.log:
http://dl.dropbox.com/u/38176672/Xorg.0.log%28kde%29

My laptop specs:
I have Archlinux, KDE 4.7. My laptop is:
Asus k50ij
intel gma 4500m integrated
2gb ram
dual-core cpu t3000


Reproducible: Always

Steps to Reproduce:
Press Fn+F6 (to switch the screen OFF).

Actual Results:  
High XORG CPU usage, mouse is slow for about 5-10 seconds.

Expected Results:  
Lower CPU usage, cursor should move normally.

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