Dual Monitoring

May I know which tutorial you followed? What changes did you make to your xorg configuration?

Thanks.

I used this tutorial: http://ubuntuforums.org/showthread.php?t=221174

??

Hello !

Did you install the proprietary nVidia driver before trying this Howto ?

Regards,
Benoît

Yes. When I boot my computer, I get the nVidia logo before the splash screen.

Did you follow:- http://www.ubuntuforums.org/showthread.php?p=1773584 ?

This guide has some resolutions hard wired into the xorg.conf (which in my opinion it should not). Is your monitor/panel capable of the resolutions specified in metamodes in /etc/X11/xorg.conf? You screens may be unable to cope with the resolution or refresh rate.

Once at the logon screen (which as you say is blank) you may be able to use CTRL+ALT+Minus to change resolution.

Can you logon in recovery mode, edit /etc/X11/xorg.conf :-

sudo nano /etc/X11/xorg.conf

And change Driver "nvidia" to "nv" temporarily to get the GUI back. You will need to issue:-

sudo /etc/init.d/gdm restart

To restart the GUI.

Nvidia Dual Head / Dual monitor Fix

BugFix:

Dual-Head monitor problems:- seen in versions 7.04 (& beta) / 7.10

To fix this is much easier than it at first appears, first a warning!

Do not try to use the tool under "System | Administration | Screens & Graphics"
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When I tried this the system lost the previous {working} settings and althought it attempted to boot nothing appeared on the screen, trying CTRL+ALT+F2 did not bring up even a text mode login (i.e. no login) and NO display(s) showing at all!

Instead use the following method which works perfectly...

Fix:
 Once you have installed and downloaded ALL the latest updates for version 7.10, and you have activated / installed the "Restricted mode Driver" for "Nvidia", let the OS and computer finish fully updating. Once the drive stops running and or the processes have finished. You must install the 'restricted' mode driver or this will not work.

Remember to wait until this has all happened, (use the System | Administration | System monitor, will help, when your CPU[s] have finished major work) then reboot when prompted.

 Now after the reboot and the clean Login, wait three minutes (use screensaver to time this) and then use the following (I will try to replicate the prompts etc. that you will/may receive.

 Go to "Applications | Accessories | Terminal"

 You'll get a prompt like the following:

response User@SomeSystem:~$ Now type after the prompt

  User@SomeSystem:~$ sudo su [Enter] {Forces user into super-user mode}
response [sudo] password for User: Enter your password
response root@SomeSystem:/home/User Now type the following command

  root@SomeSystem:/home/User# nvidia-settings [Enter]
response

--------> A new window will appear with the Nvidia Corporation Logo in it.

  The nvidia 'control panel' will now appear and here you can set your various settings for dual head support.

  Here you can set things up, using the {I recommend using Dual-Monitor support, which allows different stuff on each monitor.}

  Select the tag - "X Server Display Configuration"

  If one of the settings you need to adjust is not listed try switching into 'Advanced... ', if you don't understand this, stay in 'Normal... '
  If you want to play with the fun compiz fusion display tool (makes Vista display stuff look like a school-kid <g>, see below) then remember to also turn on the "Enable Xinerama" tick box.

  When you've fully finished remember to click "Save to X Configuration File" and "OK".

If you don't do this your new settings will NOT be written to the "xconf.cfg" file. I advise you, unless you have many years experience with Linux and UNIX, just don't try to directly edit this file as most new users don't understand how much detail 'X' requires, stay with using the Nvidia tool above.

 "exit" {at the prompt - leaves sudo su mode} and "exit" the terminal... ( - which clears and closes the terminal.) if things don't clean up properly (happened to me once) then from the X desktop if you can't "exit" kill {click [X]} the terminal window (which will close both nvidia settings window and terminal.)

 or when instructed by the Nvidia control panel, go to ---> Reboot.
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 Thats it now all you have to do is ---> and reload your OS, and login... Now just for fun a tip...

 Go to "System | Administration | Synaptic Package Manager", after logging back in, and once it finishes downloading the new application lists, "Search" for 'compiz' and download the "Advanced Desktop Effects Settings" tool, let it install {it should now be installed near the top of your "System | Preferences " list,} have fun playing with this.

 You may have to re-adjust the frequency for some monitors to get the best settings, after rebooting.

You shouldn't need another reboot, remember that the WRONG FREQUENCY COULD DAMAGE YOUR HARDWARE! so be careful to have the manufacturers full specifications for the monitor[s] you are using. Most monitors have the manufacturers information about model number etc. On the rear on some kind of label, if it is not stamped into the plastic moulding.

Whalla... All should now be O.K. Enjoy

John Fensome

<email address hidden>

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Acknowledgements:-

Many thanks go to...

  'Kevin Gabbert' and his answer[s] to BUG report # [???? unknown ????] which he replied to a report by 'Sitsofe Wheeler' - written on 2007-05-14: (Ubuntu permalink)

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N.B. A note to ATI users, you should most likely need to find out the name of the programme that runs the settings for your setup. (Instead of 'nvidia-settings'.)

        You may have to go to the ATI web site to find this information, but it's probably something very similar.

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