Article 49G8 [SOLVED] Cannot set up dual monitors in XFCE or MATE

[SOLVED] Cannot set up dual monitors in XFCE or MATE

by
walterbyrd
from LinuxQuestions.org on (#49G8)
I am using Debian 7.6 with MATE. I have an AMD quad-core 64bit and ATI graphics.

I do not want the same image in both monitors. I want the second monitor to expand the first.

This worked fine in Salix 14.1 with MATE - no trouble at all.

I first tried this with XFCE 4.8, could not get it to work. So I installed MATE, like I had with Salix, and it still does not work.

I have two monitors: the first is VGA, the second is DVI.

Whenever I go into monitor preferences, and uncheck "Same Image in all monitors" then click "Apply" I get the error message:

Quote:
The selected configuration for display could not be applied required virtual size does not fit available size.

I have tried every resolution available. Nothing works.latest?d=yIl2AUoC8zA latest?i=aUTzl9klwZo:6nxzsOFw4xo:F7zBnMy latest?i=aUTzl9klwZo:6nxzsOFw4xo:V_sGLiP latest?d=qj6IDK7rITs latest?i=aUTzl9klwZo:6nxzsOFw4xo:gIN9vFwaUTzl9klwZo
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