setting VGA output from laptop

[Xavier]

On Fri, Jun 21, 2013 at 01:40:14PM -0500, Robert Bonomi wrote:

Hi Robert,

>
> > Date: Fri, 21 Jun 2013 19:24:26 +0200
> > Subject: setting VGA output from laptop
> > From: Xavier <xavierfreebsdquestions at gmail.com>
> >
> > Hi,
> >
> > Is there any way to configure VGA width output from one laptop ?
> >
>
> Authoritative answer: "Maybe"
>
> It's not clear =exactly= what you're asking.
>
> The standard FreeBSD video driver supports 80 and 90 column wide text
> displays, with the caveat that 90-colum mode may not be usable on some
> laptops.
>
> If you're dealing with a "graphics" display, minimal VGA is 640x480 pixels.
> virtually every even remotely moddern display supports 800x600 as well,
> many support 1024x768, and a fair number go to even higher resolutions.
>
> 'man vidcontrol' will tell you how to find out what is supported on _your_
> machine.
>
>
>

For example if I try to set 40x25 text mode with VIDCONTROL(1) it don't
work.
And 'vidcontrol -i mode | grep T' show this mode.

I don't understand why if 40x25 mode if supported, VIDCONTROL(1) don't
set it ?

Thanks, see you.