Dual Screen support in Hardy Alpha 1?

Asked by Sidarth Dasari

I just want a bit of clarification, but is there dual screen support in Hardy Alpha 1?

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Olivier (olivier-lacroix) said :
#1

I guess so.

using the xrandr tool should help you setup this

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Sidarth Dasari (sirsid) said :
#2

All I see fron xrandr is the current screen I am using. My Second monitor does not even show up.

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Brian Rogers (brian-rogers) said :
#3

Dual screen support has existed for a while, but before Gutsy it could only be set up by editing the xorg config file. Starting from Gutsy, however, there is support in xrandr for dynamically reconfiguring the displays, however the video driver must provide support for this and so far, only the Intel graphics driver supports this.

If you have Intel graphics, then
'xrandr --auto' will enable all connected displays in a clone-like configuration.
'xrandr --output LVDS --left-of VGA' will, on a laptop, produce a horizontal span with the laptop display on the left and the VGA monitor on the right.

If you have something else it might be worth checking out System -> Administration -> Screens and Graphics.

What graphics card do you have?

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Sidarth Dasari (sirsid) said :
#4

I have a nvidia card

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Sidarth Dasari (sirsid) said :
#5

It seems that xorg is not detecting my setup properly. In the screens and graphics section it does not even display my laptop monitor, though if I press detect it will pick up my secondary monitor.

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Brian Rogers (brian-rogers) said :
#6

Take a look at the documentation for the nvidia driver at http://us.download.nvidia.com/XFree86/Linux-x86_64/100.14.19/README/chapter-13.html

They provide a command to automatically update xorg.conf. Try this:
sudo nvidia-xconfig --twinview --dynamic-twinview --no-separate-x-screens

After X is restarted (which should happen when you log out), you should have a spanned configuration. Then the 'nvidia-settings' tool will let you change settings dynamically.

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Sidarth Dasari (sirsid) said :
#7

The new xorg does not have a xorg.conf file. It is supposed to be able to automatically configure it self. This also means that nvidia-settings does not work.

I did get it to detect both monitors for a little bit after a bit of playing around. At first all it
would show was my secondary monitor which was not activated. After I set
the correct resolution and restarted the x server, It showed a second
monitor which I presumed to be my laptop's monitor. After I set that
resolution, I tried to reset the x server again and got the following error:

/etc/gdm/failsavexserver: line47
[: too many arguments warning: could not retrieve EDID because set-edid
is not installed (1): error: this program does not know how to configure
the "10 shared/default-x-server doesnt exist. X server warning:Could not
generate /etc/X11/xorg.conf.failsafe for vesa driver

This is probably some bug in xorg and I am filing a bug report.