IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 26 September 2013   (all times are UTC)

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06:07
<engblom>
Running Debian fatclients, no user can unlock the screensaver. Their password is always rejected.
06:07
What could I do about this?
06:11
<vagrantc>
run the screensavers as a remoteapp
06:11
or wait for LTSP6 ...
06:12
don't know how feasible it is to run as a remoteapp
06:13
<engblom>
Sounds like a lot of manual tweaking, if I am going to get xscreensaver to run remotely on a _Fat_ client system
06:15
That screensaver gets activated by pressing ctrl-alt-del and try to guess if it happens often for the pupils at this school.
06:24
<vagrantc>
this is definitely a weakness of the current model
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06:25
<alkisg>
You might be able to substitute /path/to/screensaver with a wrapper script that runs ltsp-remoteapps screensaver instead
06:27
<engblom>
ltsp-remoteapps xscreensaver <--- seems to not work
06:28
<alkisg>
You need to enable remoteapps in lts.conf first
06:28
<engblom>
Ah, okay! Thanks!
06:30
Is the variable called REMOTE_APPS. I could not find it mentioned in the manual.
06:30
?
06:40
I got xscreensaver to run remotely... but it is not possible to lock the screen.
06:43
The problem with local running xscreensaver is that /etc/shadow entry is not copied, only the /etc/passwd entry is copied.
06:44
<alkisg>
Yes, we know... LDM needs patching for that to be worked around,
06:44
but I don't see why `ltsp-remoteapps xscreensaver "$@"` wouldn't work, unless it uses shared memory or dbus or something...
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06:55
<engblom>
There are 7 executables named xscreensaver*
06:56
It is a quite complicated program. I suspect the xscreensaver-command is used when ctrl-alt-del is pressed
07:02
<Hyperbyte>
engblom, I think you have two easy solutions without too much hacking.
07:02
1. use a database for storing user accounts, like LDAP, and configure both your server and clients to use that database
07:02
<engblom>
That sounds good!
07:02
<Hyperbyte>
2. remote xscreensaver and just use X blanking
07:03
2nd option means no lock screen, by the way. But I'm not sure how attached you are to it.
07:03
*remote -> remove
07:04
<engblom>
I think I will go for nr. 2
07:04
I had been considering nr. 2 myself when I saw how complicated things were risking to get.
07:05
The more tweaking and hacking, the bigger chance an apt-get dist-upgrade will fail badly
07:05
<Hyperbyte>
Definitely easiest. apt-get purge xscreensaver packages in the client chroot and rebuild the image, then use X_BLANKING=<seconds> in the lts.conf
07:06
As for suggestion #1... it's a bit more work than suggestion #2, but I can definitely recommend anyone setting up a server where lots of user accounts need to be managed, to use a database for it. Makes (remote) managing easier and allows you to use the exact same user credentials on an N amount of computers.
07:09
<engblom>
In the this moment, the customer will not want to pay for a such migration that #1 would require. I have already been talking a bit about it with them. They do not see a big benefit of it.
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07:10
<Hyperbyte>
How many user accounts do they have?
07:10
<engblom>
There is a small interest for it, but not until earliest next summer. They want this school year to finish before that.
07:10
<Hyperbyte>
School. :-o
07:12
<alkisg>
You could just patch LDM to store the hash in /etc/shadow...
07:12
It shouldn't need more than 20 lines of code
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07:12
<Hyperbyte>
alkisg, this would make a nice patch anyway, if it could be toggled with an lts.conf variable.
07:12
:-)
07:13
<alkisg>
Yup
07:13
<engblom>
It is a municipality with 5 ltsp-servers (one for each area). I have been suggesting to have a common login for all 7 schools using them, so things are easier for teachers moving between them
07:13
<alkisg>
It's just a matter of "who does it" :)
07:13
<Hyperbyte>
engblom, yeah... LDAP would be awesome for that. 389-ds allows multi-master replication too, so you can have a fallover server at every location. I use that at work.
07:14
engblom, plus, if your school would ever deploy something else requires logging in (like web applications for students/teachers), they could link that into their existing user database, thus eliminating the need to manage multiple logins for each student/teacher.
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14:39
<jammcq>
hello friends
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15:01
<pscheie>
Hey jammcq
15:03
If anyone asks/cares, I'm renting a car in BGR so if anyone needs a ride from BGR to Southwest Harbor, I've got a bit of space.
15:03
for BTS, that is.
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15:26
<willianmazzardo>
alkisg, hi again :)
15:26
<alkisg>
Hi willianmazzardo
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15:43
<jammcq>
pscheie: good to know. thanks
15:44
<pscheie>
jammcq, looking at the Seawall Motel website, it says all the rooms ar booked Oct. 31 - Nov 3.
15:45
<jammcq>
yep... that's for us
15:45
<pscheie>
I'll just send an email to--I forget the proprietor's name--inquiring about a room then.
15:46
<jammcq>
if you just tell me what you want, that's good enough
15:46
and the only choices are 1 bed or 2
15:46
<pscheie>
Oh, ok. I want a single. I only need one bed.
15:47
<jammcq>
k
15:49
pscheie: have you bought your plane ticket?
15:49
if so, when are you arriving at BGR and leaving
15:50
<pscheie>
Yes, I have. I arrive sometime around 4pm, a little after I think.
15:50
<jammcq>
on thursday?
15:51
<pscheie>
Yes. 4:36pm
15:51
And then leaving Sunday at 1:05pm.
15:51
I've got a one hour layover at LaGuardia along the way.
15:52
Plane leaves BGR at 1:05, that is.
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16:06
<willianmazzardo>
alkisg, do you have something in mind to test?
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