ubuntu-x-swat team mailing list archive

[Geoff <576288@xxxxxxxxxxxxxxxxxx>]

I tried Option "EXAPixmaps" "off", but with no change.  However, further
experimentation has revealed that if you use Monitor Preferences to set
both monitors to 1280x1024, the screens both behave perfectly - no
trails, no weird colour blocks, everything properly refreshed.

Not really an answer as I need to use my screens at max res ie
laptop=1920 and Samsung ext LCD=1600x1200, but this must be a clue to
what is wrong ?  Looks like maybe a video memory addressing problem ?
Can anyone suggest settings that might be tweaked to try to get round
this issue please ?

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https://bugs.launchpad.net/bugs/576288

Title:
  second screen in dualhead setup doesn't refresh properly until
  reconfigured