Screen resolution stuck at 640x480.

This was the problem I encountered. The only resolution presented when I installed
the system was 640x480. This was changed once I installed the ATI driver: fglrx and edited the /etx.X11/xorg.conf so that the driver "ati" was changed to "fglrx"

Now a fill list of acceptable resolutions appeared. This may be a problem with the Nvida driver as well. So the first question would be are you using an ati video card?

As you seem to be able to reach 1024x768 eventually this might not e the case.

But that is a thought. If this proves to be the case be sure to read the manual for your video card to learn the acceptable screen resolutions.

Are you using a KVM switch? Some video hardware tries to automatically detect the capabilities of the monitor, and if that fails, it very well may assume the worst (640x480). Can you run this in a terminal:

lspci | grep VGA

..and post the output here?

thanks,
Forest

On Wed, 2006-11-08 at 21:17 +0000, Forest Bond wrote:
> Support request #2379 on Ubuntu changed:
> https://launchpad.net/distros/ubuntu/+ticket/2379
>
> Comment:
> Are you using a KVM switch? Some video hardware tries to automatically detect the capabilities of the monitor, and if that fails, it very well may assume the worst (640x480). Can you run this in a terminal:
>
> lspci | grep VGA
>
> ..and post the output here?
>
> thanks,
> Forest>

> Thanks to you guys advice about KVM switchs, I start with the
right monitor engaged, no more problems.

Thanks, Mike

Changing this request to answered, see comment https://answers.launchpad.net/people/mylark71

Changing this request to answered, see comment made by requestor https://answers.launchpad.net/people/mylark71

After inserting a KVM switch, I got the same trouble; could use a more-explicit answer on what to do, if you guys are up for it.

'lspci | grep VGA' yields he following...

0000:00:02.0 VGA compatible controller: Intel Corp. Unkown device 2772 (rev02)

swhiser, when you turn on the computer, make sure that that PC is selected on your KVM, and leave it selected until the PC has finished booting into the graphical system. The problem occurs when the other PC is selected during the boot process. The OS tries to query the monitor for supported video modes, and the query fails. The OS must be able to talk to the monitor during the boot process.

-Forest

Thank you, Forest.
That doesn't seem to be the issue. Still an apparent problem "talking" to
the monitor.
What other info would be helpful?

-Sam

On 4/19/07, Forest Bond <email address hidden> wrote:
>
> Question #2379 on firefox in ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/firefox/+question/2379
>
> Forest Bond requested for more information:
> swhiser, when you turn on the computer, make sure that that PC is
> selected on your KVM, and leave it selected until the PC has finished
> booting into the graphical system. The problem occurs when the other PC
> is selected during the boot process. The OS tries to query the monitor
> for supported video modes, and the query fails. The OS must be able to
> talk to the monitor during the boot process.
>
> -Forest
>

--
http://www.PlexNex.com

On Thu, Apr 19, 2007 at 03:03:13PM -0000, swhiser wrote:
> Question #2379 on firefox in ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/firefox/+question/2379
>
> swhiser proposed the following answer:
> Thank you, Forest.
> That doesn't seem to be the issue. Still an apparent problem "talking" to
> the monitor.
> What other info would be helpful?

Hmm. I could be a limitation of your KVM switch. The only solution, then, is
to hard-set the configuration by overriding the auto-detection. I don't think
this is currently possible using a graphical configuration utility (like
System->Preferences->Screen Resolution).

I had to do that a few years back. You have to edit /etc/X11/xorg.conf by hand,
but I don't recall exactly what needs to change.

Can you post the contents of that file here?

thanks,
Forest

I had a similar problem (KVM switch). I connected the ubuntu machine directly to the monitor (without rebooting), this seemed to allow the necessary recognition to take place and I selected 1280 * 1024.

 Plugging back into KVM switch allowed setting to 'stick'. (have not yet rebooted machine though!)