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I'm running a 5 screen setup over (5th screen disabled atm) two Radeon HD cards, three on a 6770 and two on a 5450 (one disabled atm).

When I move my mouse onto the second screen on the first card (6770) it disappears. Like a ghost mouse it does function on that screen but is not visible.

Here's a diagram of the setup:

and a screenshot of the Catalyst configuration

(it shows the two smaller LCDs as CRTs for some reason).

System is (X)Ubuntu 11.04 and I'm running the fglrx driver (proprietary?) version 11.9, the window manager is xfce4 (installed the Xubuntu package to get it).

The weird thing is it does work occasionally... I just don't know what causes it to work and not work.

Any ideas where I could start?

Cheers.

EDIT: Just confirmed it does the same thing on gnome, gnome (without effects) and fluxbox. Can't test unity cos I uninstalled that. Compositioning is on also.

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closed as too localized by jrg Jan 16 '13 at 2:54

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

    
This question appears to be abandoned and unanswered, if you are experiencing a similar issue please ask a new question with details pertaining to your problem. If you feel this question is not abandoned, please flag the question explaining that. –  Eliah Kagan Jan 16 '13 at 2:45