Public bug reported:
NVIDIA has its own implementation of dualhead support called twinview
enabled by default when using nvidia driver. Xorg (and GNOME) reports
(availible) refresh rates wrong, and you cant select the good ones. This
is absolutely annoying when using CRT monitors.
Using the following option in display section solves the problem (by switching
off twinview):
Option "DynamicTwinView" "False"
Then the resolutions reports correctly, and can be selected correctly.
Since Gutsy have a displayconfig-gtk app, with dual monitor support,
(and nvidia-settings is hidden in the menu by default) the above line
should be add to the Xorg.conf by default when using nvidia binary
drivers.
** Affects: ubuntu
Importance: Undecided
Status: New
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[Gutsy] Incorrent refresh rates with nvidia driver by default (Twinview issue)
https://bugs.launchpad.net/bugs/137522
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