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[Bug 363375] Re: [multi screen] mouse position sometimes wrong

To: ubuntu-x-swat@xxxxxxxxxxxxxxxxxxx
From: quokka <cdavenport@xxxxxxxxxx>
Date: Mon, 20 Jul 2009 03:54:56 -0000
Reply-to: Bug 363375 <363375@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

I have also had this problem with Jaunty 64 bit. Environment is two
Nvidia NVS 285 PCI-E cards and four monitors. Errors as reported above
appear in the Xorg log.

I may have stumbled on a work around, which is (for the above config)

1. Configure xorg.conf for  Nvidia twinview for each pair of monitors

2. Install fake Xinerama : http://ktown.kde.org/~seli/fakexinerama/ and
configure it for the monitor sizes and layout.  You need to install the
libxinerama-dev package to compile fake xinerama.

I have had no issues with the cursor going walkabout after several days
of use. A really big bonus is that graphics performance is VERY MUCH
better than the former Xinerama setup. That glue like feel that seems to
accompany Xinerama has just disappeared. Windows maximize correctly and
apps know the screen boundaries.

Although my setup uses twinview, I suspect that this work around may
work in other configurations.

-- 
[multi screen] mouse position sometimes wrong
https://bugs.launchpad.net/bugs/363375
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