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Re: Q: How to "freeze" LTSP sessions - and unfreeze later.

On 23-11-2004 21:47, Ralf Gesel|ensetter wrote:
> Hi there, 
> know that situation? You want to explain something that would last only 
> 2 minutes - if not you had to detach 25 pupils from "their" computer 
> sites?
> If one could only halt their sessions - so they won't be distracted for 
> the next 2 minutes.
> I tried out several things, one worked: Assuming _you_ are on a 
> workstation and pupils use thin clients, log in to ltspserver and 
> "ifdown" eth0 (presuming eth0 has the 192-net).
> At once, all thin clients freeze. Alas, after some time, an ifup of eth0 
> doesn't reactivate the sessions - they are timed out and closed (as 
> opposed to nx sessions BTW).
> Is there any other services that I could use to have the same effect? 
> Maybe just start a process with real time priority?

It looks like xlock has a -remote option that can be abused to lock a
screen belonging to someone else.

 - Jonas

* Jonas Smedegaard - idealist og Internet-arkitekt
* Tlf.: +45 40843136  Website: http://dr.jones.dk/

 - Enden er nær: http://www.shibumi.org/eoti.htm

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