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Old 02-11-2009, 04:07 AM   #1
Linux.tar.gz
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How to temporarily disconnect keyboard and mouse under X ?


I need to ensure that some students will not mess around during some lessons, ie. when videos are displayed.

linked to this thread : http://www.linuxquestions.org/questi...nder-x-703802/

Last edited by Linux.tar.gz; 02-11-2009 at 08:34 AM.
 
Old 02-11-2009, 06:49 AM   #2
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Take a look at xscreensaver. Obviously you do not want a screensaver, but what xscreensaver can do is lock your keyboard and require your password to unlock. I. e. either take a look at its source or post on its discussion forum. It should not bee too extremely hard to write a small app based on xscreensaver code that locks X and requires a password before it will "listen" to the keyboard, mouse again, but leave your training script or whatever way you do the teaching running.
 
Old 02-11-2009, 08:33 AM   #3
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Interesting, thanks. And as the professor's PC can ssh to students, it can simply killall xscreensaver.

Last edited by Linux.tar.gz; 02-11-2009 at 08:35 AM.
 
Old 02-11-2009, 11:54 AM   #4
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Mmm finally not enough... I really need to "disconnect" keyboard and mouse.
Users should only be able to watch !
 
Old 02-12-2009, 03:53 AM   #5
Linux.tar.gz
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rmmod psmouse
rmmod usbhid
It's violent, but it works.
I also tried to change permissions on devices, but without success...

Any other idea ?
 
Old 02-12-2009, 06:28 AM   #6
rylan76
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Nope sorry... but I'll remember what you have above, it could be useful... thanks!

Well, at least I learned something new - even if I could not assist...
 
Old 02-12-2009, 08:22 AM   #7
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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 :^).
 
  


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