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Date: Tue, 9 Dec 2014 08:11:55 -0700 (MST)
From: Warren Block <wblock@wonkity.com>
To: Victor Sudakov <vas@mpeks.tomsk.su>
Subject: Re: Two local X-servers
In-Reply-To: <20141209142333.GA82357@admin.sibptus.tomsk.ru>
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 (wonkity.com [127.0.0.1]); Tue, 09 Dec 2014 08:11:56 -0700 (MST)
Cc: Adam Martin <adamartin@freebsd.org>, freebsd-questions@freebsd.org
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On Tue, 9 Dec 2014, Victor Sudakov wrote:

> Adam Martin wrote:
>> I have had success running multiple X11 sessions, but I do not use login
>> managers like xdm.
>
> I would like to keep xdm. According to xdm(1), it should be possible
> for xdm to manage several local X-displays.
>
>>
>> I run startx directly from my TCSH prompt.  To run a second session from my
>> prompt I run with another number, i.e.:
>>
>> startx -- :1
>>
>
> From your experience we can at least conclude that two X-servers can
> share one videocard. I was not even sure about that.
>
>> Note that you need Ctrl-Alt-F1 or similar to change ttyv devices from X11.
>
> On my box, after an X-server is started, there is no return to the
> text console. This is because of the Intel video card or Intel video
> driver. Once I start an X-server, there is no text prompt for me.

It is there, just not visible.  On 10.1 and probably 9-STABLE, use vt(4) 
by adding
   kern.vty=vt
to /boot/loader.conf.