Created attachment 14713 [details] 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)
MergedFB is no longer supported. I would recommend upgrading to ati driver 6.8.0 and using xrandr.
As far as I see, "ati" is just a wrapper to load right driver, so it'll load "radeon" in my case. My "ati" is really old, 6.6.3, and it loads "radeon" as I expect. I would appreciate if MergedFB will be marked as "obsolete" or "not under development" in `man 4x radeon` with suggestion to use xrandr. Thank you for the suggestion, hope it'll solve my issue. I've found docs for it at thinkwiki saying «xrandr is the command line interface to the RandR X extension. As usual with X, good documentation is hard to find». :)
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