A problem with a strange video connection.

[Tarun Khanna]

On Thu, May 19, 2011 at 12:25 PM, <lziegler at unix.csbsju.edu> wrote:

> 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
>
>
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The following information helped me with the overscan issue, but it might
should help you with manually setting the resuolution too.

http://www.ypass.net/blog/2009/07/dvi-to-hdmi-overscan-screen-edge-cutoff-on-an-hdtv/
http://ubuntuforums.org/showthread.php?t=1003099&page=2

Thanks,
Tarun
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