Arch Linux

jdiez

Member

Registered: 2009-08-03

Posts: 40

Dual screens

Hi, I have my Arch Linux set up and running, and I'm really happy.

But now I want to setup my two displays. I'm not using xorg.conf, just dbus and hal daemons. I tried xrandr <screen 1> --left-of <screen 2>, but nothing happens. HAL does detect my screen because if I connected it is displayed in the monitor list, and the output from the main monitor is cloned, but I found no way to drag windows between them.

Thanks in advice!!

Nagian

Member

From: Altach, Austria

Registered: 2009-08-03

Posts: 70

Re: Dual screens

You need to write xrandr --output <extending screen> --auto --left-of <main-screen>
With --auto you will switch your monitor on.

Mr.Elendig

#archlinux@freenode channel op

From: The intertubes

Registered: 2004-11-07

Posts: 4,092

Re: Dual screens

What hardware do you have?

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sharpie

Member

From: Phoenix, AZ

Registered: 2008-11-16

Posts: 72

Re: Dual screens

Also, if you're using KDE I don't believe it supports dual screens does it?

jdiez

Member

Registered: 2009-08-03

Posts: 40

Re: Dual screens

Nagian: If I try that I get this output:

xrandr: screen cannot be larger than 1440x1440 (desired size 2729x1024)

Mr. Elendig:

lspci | grep VGA
01:00.0 VGA compatible controller: ATI Technologies Inc M56P [Radeon Mobility X1600]

Sharpie: I'm using openbox, I'm kind of KDE detractor

bostonvaulter

Member

Registered: 2008-07-17

Posts: 36

Re: Dual screens

You should first try with a smaller resolution rather than the default (with --auto).

You probably need to edit xorg.conf and add a larger virtual resolution in there. That is what I had to do.

Nagian

Member

From: Altach, Austria

Registered: 2009-08-03

Posts: 70

Re: Dual screens

Well, as already said, you should make your virtual resolution higher.
You have to do this in the xorg.conf:

Section "Screen"
    Identifier "Screen0"
    Device     "Card0"
    Monitor    "Monitor0"
    SubSection "Display"
        Viewport   0 0
        Depth     24
        Virtual   3360 1050
    EndSubSection
EndSection

Of course you should make these changes in the existing Sections.

jdiez

Member

Registered: 2009-08-03

Posts: 40

Re: Dual screens

I do not have a xorg.conf, I use dbus and hal instead

dezza

Member

From: Denmark

Registered: 2007-04-05

Posts: 126

Re: Dual screens

You can also use nvidia-config and then just backup your old Xorg, then merge them afterwards ..

jdiez

Member

Registered: 2009-08-03

Posts: 40

Re: Dual screens

But my Graphic Controller is from ATi. Will nvidia-config work? Also, as I said, I'm using HAL.

jelly

Administrator

From: /dev/null

Registered: 2008-06-10

Posts: 714

Re: Dual screens

i dont think nvida-config will work , since that is for nvidia cards. Does ATI have a tool to configure graphic cards ?

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dotfiles

dezza

Member

From: Denmark

Registered: 2007-04-05

Posts: 126

Re: Dual screens

Yes it does, but I don't know it ..

As long as you don't use TwinView, you should be OK with ATI ..

This is how my Xorg looks with dualscreen:
http://dpaste.com/hold/78363/

But NOTE, not all options are required, I only keep them there to have them for reference.

Last edited by dezza (2009-08-11 18:13:09)

Nagian

Member

From: Altach, Austria

Registered: 2009-08-03

Posts: 70

Re: Dual screens

I do not have a xorg.conf, I use dbus and hal instead

Then try making one;)