[Bug 2944] New: Server locks hard when dragging icons

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https://bugs.freedesktop.org/show_bug.cgi?id=2944          
     
           Summary: Server locks hard when dragging icons
           Product: xorg
           Version: 6.8.2
          Platform: Macintosh
        OS/Version: Linux
            Status: NEW
          Severity: critical
          Priority: P2
         Component: Server/general
        AssignedTo: xorg-bugzilla-noise at freedesktop.org
        ReportedBy: gwright at kde.org


When dragging icons around in KDE (tested with 3.4 and CVS builds), the server  
locks. The cursor can still move around but the rest of X is frozen. The only  
way to fix it after this is to ssh in and kill X.  
  
Running gdb and grabbing a backtrace when the system locks up produces the  
following:  
  
0x10162774 in miPolyBuildPoly ()  
(gdb) bt  
#0  0x10162774 in miPolyBuildPoly ()  
#1  0x10165e64 in miWideDash ()  
#2  0x10160a84 in miPolyRectangle ()  
#3  0x10140a68 in damagePolyRectangle ()  
#4  0x100862ac in ProcPolyRectangle ()  
#5  0x1008aa80 in Dispatch ()  
#6  0x10099fe4 in main ()  
  
Disabling acceleration fully and DRI doesn't seem to stop the lockups. I've 
tried this with both the fbdev and radeon drivers, both producing the same 
results. 
 
This is on a PowerBook G4 with a Radeon 9600 Mobility (M10) graphics card and 
Gentoo Linux.          
     
     
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