[Bug 14747] New: radeon driverdisplays two cursors sometimes in MergedFB mode on radeon mobility 7500

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=14747

           Summary: radeon driverdisplays two cursors sometimes in MergedFB
                    mode on radeon mobility 7500
           Product: xorg
           Version: 7.2
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: minor
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: freedesktop at darkk.net.ru
         QAContact: xorg-team at lists.x.org


Created an attachment (id=14713)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14713)
photo that shows the bug

I have ibm thinkpad T41 laptop with radeon mobility 7500 inside.

When I slowly move mouse cursor through some places of right half of external
screen then it is shown on internal screen too when cursor is changed
(e.g. application sets it to some other form) . As soon as I move changed
cursor one pixel further then it disappears from internal screen.

I attached photo of two screens with two cursors if my explanation is unclear.
I could not manage to take usual screenshot saving cursors.

Kernel is 2.6.23-gentoo-r8, Xorg -version is 1.3.0, radeon module version
is 4.2.0, radeon card configuration is:

Driver "radeon"
Option "MonitorLayout" "LVDS, CRT"
Option "MergedFB" "true"
Option "CRT2Position" "RightOf"
Option "CRT2HSync"    "30.0-61.0"
Option "CRT2VRefresh" "50.0-75.0"
Option "MergedXinerama" "true"


In /var/log/Xorg.0.log I see that:

(II) RADEON(0): Using hardware cursor (scanline 770)


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