[xorg-bugzilla-noise] [Bug 1380] New: problem with MergedFB and EnablePageFlip in then radeon driver

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https://freedesktop.org/bugzilla/show_bug.cgi?id=1380        
   
           Summary: problem with MergedFB and EnablePageFlip in then radeon
                    driver
           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: fabrice at bellet.info


I have an odd behaviour, with my Radeon 8500, using xorg CVS, with MergedFB
enabled. Only when the option "EnablePageFlip" is activated, the second head
becomes a clone of the first head, immediately when I start a 3D app, for
example glxgears. No error message in the logs. The relevant part of my config
file is :

Section "Device"
        Option      "AGPMode" "4"
        Option      "AgpFastWrite" "off"
        Option      "EnableDepthMoves" "on"
        Option      "EnablePageFlip" "off"
        Option      "BackingStore" "on"
        Option      "RenderAccel" "on"
                                                                                
        Option      "MergedFB" "true"
        Option      "CRT2Position" "RightOf"
        Option      "MetaModes" "1280x1024-1280x1024"
        #Option      "MetaModes" "1600x1200 at 60-1600x1200@60"
        Option      "MonitorLayout" "CRT, CRT"
        Option      "CRT2HSync" "27-110"
        Option      "CRT2VRefresh" "50-160"
                                                                                
        Identifier  "Card0"
        Driver      "radeon"
        VendorName  "ATI Technologies Inc"
        BoardName   "Radeon R200 QL [Radeon 8500 LE]"
        BusID       "PCI:1:0:0"
        Screen      0
EndSection

Mergebfb and EnablePageFlip used to work together with the DRI, before it got
merged in xorg.        
   
   
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