Review your favorite Linux distribution.
Go Back > Forums > Linux Forums > Linux - Software
User Name
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.


  Search this Thread
Old 03-03-2005, 12:17 PM   #1
Registered: Nov 2003
Location: Belgium
Posts: 81

Rep: Reputation: 15
disable second monitor

I have a dell laptop with an nvidia card in it which supports two monitors. I've succesfully installed the second screen (no Xinerama) and now have a second KDE desktop on my VGA attached CRT monitor just the way I want it. I can now use this laptop to connect to a beamer to give courses. I do have some additional requests:

is it possible to turn the second screen on and off on the fly? Since 2 screens are configured in the xorg.conf file it will alwys display two KDE desktops, even if no CRT monitor or beamer is attached. This way I can loose my mousepointer on the other desktop that is not visible. I know I can change it in the xorg.conf file to just get one monitor but that's not really a quick solution in contrast with pressing Fn/F8 in windows.

second question: is it possible to show the contents of the second monitor in a window on my LCD flat panel? I don't want twinview, I'm perfectly happy with the 2 desktops but when I give presentations it would be nic to see on my flatpanel (which as a much higher resolution then the CRT) a window with the contents of the CRT desktop.

hope you can help me
Old 03-03-2005, 12:36 PM   #2
Registered: Jun 2001
Location: UK
Distribution: Gentoo, RHEL, Fedora, Centos
Posts: 43,417

Rep: Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981
for your first query, no you can't change it on the fly unfortunately. you would need to modify the config for X and then restart the X server. if you're using a graphical login, then this would just involve logging out, when it will restart itself.

as fo the second... again there's no smart way i know of, but i can think of potentially hacky ways to do this... try using a vnc server for example, using x11vnc to show an existing desktop. with two desktops, you can tell the vncserver to show the one you want, and then connect to that server on the other screen, and flick it to fullscreen on that side. you've then effectively got a clone.... not too elegant, but actaully it's pretty flexible and should work well once set up correctly.
Old 03-04-2005, 05:03 AM   #3
Registered: Nov 2003
Location: Belgium
Posts: 81

Original Poster
Rep: Reputation: 15
is there a way I could let the system ask if I want 1 or 2 screens at boot?

The vnc solution works quite well alltough I'm a bit disappointed with the mousepointer movement. It's really sloppy so it's difficult to steer the cursor from the vncviewer window and that's what I want to do when I'm giving presentations. The server and the viewer are on the same host so one would expect good quality. I turned of all compression and such but the problem remains. I'm using tightvnc so maybe other viewers are more suited for this purpose. Do you know of a better viewer?


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Disable Xorg Monitor Auto Detect! wh33t Linux - Software 1 06-02-2005 07:02 AM
How to disable the Monitor Sleep function under RH9 ?? 242VDM242 Linux - Newbie 1 05-21-2005 02:51 PM
how to disable cpu monitor ? epoo Linux - Hardware 1 06-06-2004 12:16 AM
Disable Monitor Sleep [in fluxbox and from tty] VxJasonxV Red Hat 7 01-29-2004 05:43 PM
disable monitor standby vapz Linux - General 2 08-30-2003 01:01 PM > Forums > Linux Forums > Linux - Software

All times are GMT -5. The time now is 06:46 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration