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Binary package hint: compiz
Just like the title says.
I have an up-to-date i686 gutsy install on a Dell XPS M1710 laptop with
an NVIDIA GeForce Go 7900 GS and a second monitor (a SONY KDL46XBR4 LCD
TV). If I enable Compiz and configure NVIDIA to enable the second
display using the Separate X Server option in nvidia-settings, then the
response to most GUI actions is delayed by 1 second. For example, if I
click on the Applications button at the top-left of the desktop, the
menu does not appear until after 1 second has gone by (though the button
does change to orange immediately). Similarly if I click on menus within
applications, or right-click on tray icons, or press Ctrl+Space to bring
up SCIM. Text input is not delayed though. Also, I notice that the
application SMPlayer--a KDE program--does not have any delay.
If compiz is not enabled, then this bug does not occur. If NVIDIA is set
to use TwinView, then this bug does not occur. Only the separate X
server set-up with compiz triggers the problem.
** Affects: gtk+2.0 (Ubuntu)
Importance: Undecided
Status: Incomplete
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Compiz + separate X server multi-head nvidia setup => GUI responses delayed by
1 second
https://bugs.edge.launchpad.net/bugs/172503
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