A problem with a strange video connection.

[lziegler at unix.csbsju.edu]

I have an HP desktop machine that I have used for some time with Red Hat
and, now, with Ubuntu for the last couple of years. I had no problem until
I installed 11.04. When I did, it refused to recognize my monitor (an Acer
with resolution up to 1600x1050) and said it was unknown and set the
resolution to 1024x768.

By the way, I know that it is possible for this to work since I hooked up
a windoze machine to this same monitor and it had no problem recognizing
the optimal resolution of 1600x1050. Similarly, when I installed Windoze
on this machine for a dual-boot configuration it, too, had no problem.

The problem with this computer is that it has only a DVI output with a
dongle attached to it that converts DVI to VGA. (I know, but I got it
really cheap.) Ubuntu recognizes this as DVI-0 but, apparently, will not
get the monitor's plug and play characteristics.

I want to simply FORCE 11.04 to run that monitor at its full resolution.
How do I go about doing this?

I know I should rtfm but when I googled and searched I found methods that
involved editing conf files that are no longer there and other suggestions
that simply didn't work.

Please direct me to places that explain how to do this. (In the distant
past I recall editing xorg.conf but apparently that is not how X works
anymore.)

Lynn Ziegler