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Old 02-11-2009, 04:02 AM   #1
Linux.tar.gz
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How to display a black blank screen under X ?


I need to display a black screen, just to ensure that some students will focus on the audio.

linked to this thread : http://www.linuxquestions.org/questi...nder-x-703804/

Last edited by Linux.tar.gz; 02-11-2009 at 08:34 AM.
 
Old 02-11-2009, 06:01 AM   #2
knudfl
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Try this : 'xterm -background black'

to get xterm with no command prompt, no cursor.

Maximize it, and scroll away the "Menu line".
 
Old 02-11-2009, 06:13 AM   #3
colucix
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You can apply a blank screensaver and unplug the mouse and the keyboard from the case to prevent user input.
 
Old 02-11-2009, 08:35 AM   #4
Linux.tar.gz
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Smart ideas !

Thanks.
 
Old 02-11-2009, 08:39 AM   #5
millgates
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Quote:
Originally Posted by colucix View Post
You can apply a blank screensaver and unplug the mouse and the keyboard from the case to prevent user input.
how about unplugging the screen? ) or switching it off...
 
Old 02-11-2009, 09:13 AM   #6
farslayer
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Might want to take a look at iTALC - Intelligent Teaching And Learning with Computers

Quote:
Features
iTALC has been designed for usage in school. Therefore it offers a lot of possibilities to teachers, such as

* see what's going on in computer-labs by using overview mode and make snapshots
* remote-control computers to support and help other people
* show a demo (either in fullscreen or in a window) - the teacher's screen is shown on all student's computers in realtime
* lock workstations for moving undivided attention to teacher
* send text-messages to students
* powering on/off and rebooting computers per remote
* remote logon and logoff and remote execution of arbitrary commands/scripts
* home-schooling - iTALC's network-technology is not restricted to a subnet and therefore students at home can join lessons via VPN-connections just by installing iTALC client
iTALC supports Linux AND windows clients..


I also started a list of Linux Educational resources for software and whatnot.. always appreciate updates to that list as well if you know of any sites or resources I do not have listed yet.

Best of luck in your endeavours.

Last edited by farslayer; 02-11-2009 at 09:14 AM.
 
Old 02-11-2009, 01:50 PM   #7
Linux.tar.gz
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I knew iTALC, but i'm doing an easier-to-use homemade version for our teachers.
I already reproduced almost every features, but in a different manner. And it uses "only one computer", as all stations are booted via PXE.
Of course it is Slackware-powered.
I intend to make it available as a disk image to all, when it will be 100% tested and operationnal.

Anyway thanks for your answer and your numerous links !!! I'll browse them to include whatever useful.

You can add this to your list:
http://moodle.org/
http://www.limesurvey.org/

For the xscreensaver part, i used this : xscreensaver-command -lock
It works like a charm, except for the login screen, which appears when an input event occurs, but it's np :^).

OSS 4 4LL :^)
 
  


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