[Bug 1717] New: Changing resolution with dri makes lock (radeon 8500 AIW)

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https://freedesktop.org/bugzilla/show_bug.cgi?id=1717        
   
           Summary: Changing resolution with dri makes lock (radeon 8500
                    AIW)
           Product: xorg
           Version: CVS_head
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Driver/Radeon
        AssignedTo: xorg-bugzilla-noise at freedesktop.org
        ReportedBy: terumasa at dog.interq.or.jp


I wonder if this bug must be a kind of duplications...

When I change a resolution by pressing CTRL+ALT+(+/-) or command xrandr,
My monitor changes it's resolution,but my PC offten seems to be freeze.
Any keys don't be accepted(even numlock, CTRL+ALT+BS).
But other processes seems good.For example,sshd and httpd are available.
Playing tuxracer fullscreen mode twice or xmame.SDL --fullscreen cause this
problem too.
If I delete Option "dri",this problem dosen't occur.
It helped nothing to disable any other screen section options. 
Zapping TV viewer goes fine.

environment
MBchipset:KT133(bios is up-to-date)
MPU:Athlon
xorg-cvs(2004/10/21) i386
kernel-2.6.9-1.640 i686
NOTCL
radeon(BB)

Section "Module"
        Load  "dbe"
        Load  "extmod"
        Load  "fbdevhw"
        Load  "glx"
        Load  "record"
        Load  "freetype"
        Load  "type1"
        Load  "dri"
EndSection

Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "Monitor Vendor"
        ModelName    "Iiyama Vision Master MF-8617E"
        HorizSync    23.6 - 86.0
        VertRefresh  50.0 - 120.0
        Option       "dpms"
EndSection

Section "Device"
        Identifier  "Videocard0"
        Driver      "radeon"
        VendorName  "Videocard vendor"
        BoardName   "ATI Radeon 8500"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "Monitor0"
        DefaultDepth     24

        SubSection "Display"
                Viewport   0 0
                Depth     16
                Modes    "800x600" "640x480"
        EndSubSection
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes    "1024x768" "800x600" "640x480"
        EndSubSection
EndSection

Section "DRI"
        Group        0
        Mode         0666
EndSection

xrandr
 SZ:    Pixels          Physical       Refresh
*0   1024 x 768    ( 321mm x 241mm )  *85   75   70   60   87
 1    800 x 600    ( 321mm x 241mm )   85   75   72   60   56
 2    640 x 480    ( 321mm x 241mm )   85   75   73   60
 3    832 x 624    ( 321mm x 241mm )   75
 4    720 x 400    ( 321mm x 241mm )   85
 5    640 x 400    ( 321mm x 241mm )   85
 6    640 x 350    ( 321mm x 241mm )   85
 7    512 x 384    ( 321mm x 241mm )   87
 8    416 x 312    ( 321mm x 241mm )   75
 9    400 x 300    ( 321mm x 241mm )   85   75   72   60
Current rotation - normal
Current reflection - none
Rotations possible - normal
Reflections possible - none        
   
   
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