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How to load a second X server with a different resolution?

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  #1 (permalink)  
Old 02-20-2008, 03:27 PM
larryalk
 
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Default How to load a second X server with a different resolution?

How can I load a second X server and a simple window manager in a
different resolution in display 0:1 in KDE?

Normally I use KDE 3.4 with Slackware 10.2 with a 1280x1024
resolution. This works great but dosemu is too small.

Most of my dos programs in dosemu _require_ an 80x25 xerm window to
load. This window is too small to easily read in 1280x1024 resolution
but 800x600 is much better.

Although I can change the resolution (alt-ctl-keypad +/-) to 800x600
so the dosemu programs are happy and easy to read, this changes _all_
of my KDE virtual windows to 800x600 - a real PITA to switch and use.

My question is how to load a second X server running a simple wm at
800x600 in display 0:1. Twm is nice and simple because it by default
loads an xterm conveniently at 80x25.

Should I run xinit with parameters? Somewhere I read xinit is only for
use by the _first_ X window to run. My startx _only_ runs KDE (unless
I run xwmconfig to change the wm) although I notice that xinit will
run any window manager in /etc/X11/xinit with the right parameter.

I have tried from a user console:
X :1 &
xauth add :1 . ?mcookie? To grant permissions, doesn't work
xterm --display :1
I get a screen on alt-F8 with a simple X in the middle but cannot get
an xterm to load.

In trying to get a second X running, I've munged the X system twice
requiring a hard reboot. This is dangererous so I would appreciate
some knowledgable advice.

Thank you
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  #2 (permalink)  
Old 02-20-2008, 03:27 PM
Jeffrey Froman
 
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Default Re: How to load a second X server with a different resolution?

larryalk wrote:

> How can I load a second X server and a simple window manager in a
> different resolution in display 0:1 in KDE?


In xorg.conf, set up 2 Screen sections; identical except for the maximum
usable resolution.

Then set up two ServerLayout sections, one for each Screen section. Keeping
your current ServerLayout section *before* the new one you create will
ensure that it is the default. The second X server can then be started with
a command like:

startx -- -layout MyDosLayout :1


Hope that works for you ... never tried it myself.

Jeffrey
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  #3 (permalink)  
Old 02-20-2008, 03:27 PM
Sumo Wrestler (or just ate too much)
 
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Default Re: How to load a second X server with a different resolution?

On Tue, 28 Mar 2006 18:15:20 +0000, larryalk wrote:

> [...]
> Most of my dos programs in dosemu _require_ an 80x25 xerm window to
> load. This window is too small to easily read in 1280x1024 resolution
> but 800x600 is much better.
> [...]


I don't know how to configure X on that level, but you can enlarge the
xterm window by giving it a larger font:

$ xterm -fn 9x15

xlsfonts will give you a list of available fonts (many). However, some are
not appropriate for a terminal.

HTH
Sumo

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  #4 (permalink)  
Old 02-20-2008, 03:27 PM
larryalk
 
Posts: n/a
Default Re: How to load a second X server with a different resolution?

On Tue, 28 Mar 2006 20:56:54 GMT, "Sumo Wrestler (or just ate too
much)" <sumo.wrestler@microsoft.invalid> wrote:

>On Tue, 28 Mar 2006 18:15:20 +0000, larryalk wrote:
>
>> [...]
>> Most of my dos programs in dosemu _require_ an 80x25 xerm window to
>> load. This window is too small to easily read in 1280x1024 resolution
>> but 800x600 is much better.
>> [...]

>
>I don't know how to configure X on that level, but you can enlarge the
>xterm window by giving it a larger font:
>
>$ xterm -fn 9x15
>
>xlsfonts will give you a list of available fonts (many). However, some are
>not appropriate for a terminal.
>
>HTH
>Sumo


Thanks for that info.

xlsfonts sure shows a lot of fonts!
Which one would be the one in -fn 9x15?

From 9x15 what are the next two larger sizes?

Larry

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  #5 (permalink)  
Old 02-20-2008, 03:27 PM
larryalk
 
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Default Re: How to load a second X server with a different resolution?

On Tue, 28 Mar 2006 11:22:23 -0800, Jeffrey Froman <jeffrey@fro.man>
wrote:

>larryalk wrote:
>
>> How can I load a second X server and a simple window manager in a
>> different resolution in display 0:1 in KDE?

>
>In xorg.conf, set up 2 Screen sections; identical except for the maximum
>usable resolution.
>
>Then set up two ServerLayout sections, one for each Screen section. Keeping
>your current ServerLayout section *before* the new one you create will
>ensure that it is the default. The second X server can then be started with
>a command like:
>
>startx -- -layout MyDosLayout :1
>
>
>Hope that works for you ... never tried it myself.
>
>Jeffrey


Jeffry it appears by experment that
startx :1
will not start another X session in :1 because it is locked.

Larry

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  #6 (permalink)  
Old 02-20-2008, 03:28 PM
Sumo Wrestler (or just ate too much)
 
Posts: n/a
Default Re: How to load a second X server with a different resolution?

On Tue, 28 Mar 2006 22:04:23 +0000, larryalk wrote:

> [...]
> xlsfonts sure shows a lot of fonts!
> Which one would be the one in -fn 9x15?


Sorry, I haven't any idea. Somewhere on the filesystem there is a
font.alias that maps "9x15" to a particular font.

>
> From 9x15 what are the next two larger sizes?
>
> Larry


I don't know, but another way to get larger/different fonts in an xterm is
by using "Shift-KEYPAD_PLUS". This will automagically cycle among
different font sizes. "Shift-KEYPAD_MINUS" cycles in the opposite
direction.

You can use xfontsel to browse the fonts that X recognizes.

Or you can use the gnome-terminal or the konsole both of which allow you
to select fonts using a dialog box.

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  #7 (permalink)  
Old 02-20-2008, 03:28 PM
Sumo Wrestler (or just ate too much)
 
Posts: n/a
Default Re: How to load a second X server with a different resolution?

On Tue, 28 Mar 2006 22:06:55 +0000, larryalk wrote:

> On Tue, 28 Mar 2006 11:22:23 -0800, Jeffrey Froman <jeffrey@fro.man>
> wrote:
>> [...]
>>startx -- -layout MyDosLayout :1
>>
>>
>>Hope that works for you ... never tried it myself.
>>
>>Jeffrey

>
> Jeffry it appears by experment that
> startx :1
> will not start another X session in :1 because it is locked.
>
> Larry


startx -- :1

Don't forget the "--" before ":1"

$ man startx

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  #8 (permalink)  
Old 02-20-2008, 03:28 PM
Jeffrey Froman
 
Posts: n/a
Default Re: How to load a second X server with a different resolution?

larryalk wrote:

> Jeffry it appears by experment that
> startx :1
> will not start another X session in :1 because it is locked.


Sorry, I don't know exactly what is meant by "locked". It might help if you
were to post the exact error message you get when running the suggested
command.

Jeffrey
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  #9 (permalink)  
Old 02-20-2008, 03:28 PM
Mikhail Zotov
 
Posts: n/a
Default Re: How to load a second X server with a different resolution?

larryalk wrote:
> On Tue, 28 Mar 2006 20:56:54 GMT, "Sumo Wrestler (or just ate too
> much)" <sumo.wrestler@microsoft.invalid> wrote:
> >I don't know how to configure X on that level, but you can enlarge the
> >xterm window by giving it a larger font:
> >
> >$ xterm -fn 9x15
> >

> Thanks for that info.
>
> xlsfonts sure shows a lot of fonts!
> Which one would be the one in -fn 9x15?
>
> From 9x15 what are the next two larger sizes?


The next one will be 10x20.

--
Mikhail

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  #10 (permalink)  
Old 02-20-2008, 03:29 PM
Paul Kinsler
 
Posts: n/a
Default Re: How to load a second X server with a different resolution?

larryalk <nobody@nowhere.com> wrote:
> Jeffry it appears by experment that
> startx :1
> will not start another X session in :1 because it is locked.


When you sort any other problems, you can
put multiple entries in /etc/X11/xdm/Xservers.
I do this at home, where I typically have four
or five diferent X's and varous resolutions
(including a 640x400 for TV).

Annoyingy, however, KDE has some wierd syntax
for its config file, so I've resorted to (the
very basic) xdm until I solve the mystery.


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#Paul
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