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


Channel log from 17 September 2013   (all times are UTC)

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00:45
<willianmazzardo>
hi all … Who here have tested LTSP under UBUNTU, with FAT CLIENTS and runing application with WINE?
00:46
I have this scenario in customer, but, when I print inside WINE application, the application FREEZES until print is processed, this "process" still freeze 1 minute
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12:16
<willianmazzardo>
Hi all … If I need a commercial support… where do I find?
12:16
I need some help to solve my problem with LTSP + Wine + Printing
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12:30* alkisg waves
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12:31
<alkisg>
willianmazzardo: does the problem occur in normal, non-ltsp setups too?
12:31
If so, you should be asking in #wine for support :)
12:31
<willianmazzardo>
no
12:31
just into ltsp environment
12:31
<alkisg>
Where is the printer plugged? In the server?
12:32
<willianmazzardo>
no … ip printing
12:32
hp printer
12:32
<alkisg>
And, do the clients see the printer directly, or through the ltsp server?
12:33
I.e. is CUPS_SERVER=localhost, or is it the default CUPS_SERVER=server?
12:33
<willianmazzardo>
directly … I have fat clients, and cups_server = localhost
12:34
<alkisg>
That's strange... yeah, it will need debugging.
12:34
In theory, your fat clients don't have any differences from non-ltsp clients...
12:35
<willianmazzardo>
that is what I think ...
12:36
but … in WINE app, when I print to my HP, the app freezes for 1 minute, until printing is processed … then is released
12:37
<alkisg>
Are you using the default SSHFS? Have you tried NFS?
12:37
<willianmazzardo>
out of WINE, into LIbreoffice for an example, the printing is fine … but … if I test the same situation on non-ltsp client, into WINE, the printing was OK
12:37
im using the default instalation …
12:37
i think is nfs
12:37
<alkisg>
The default is sshfs
12:38
Which ubuntu version?
12:38
<willianmazzardo>
12.04
12:38* alkisg would try NFS, then compare `ps` while printing from a fat and also a normal client, and finally would resort to `strace`...
12:39
<willianmazzardo>
because ubuntu-2d
12:40
alkisg, can you make this tests?
12:40
i appreciate this
12:40
<alkisg>
Do you have any deadlines?
12:40
E.g. could we do this tomorrow?
12:40
<willianmazzardo>
my boss was expecting some "result" today… here is 9:40 am .. ;) … I dont know where you are
12:41
<alkisg>
3:40 in Greece...
12:41
<willianmazzardo>
pm?
12:41
<alkisg>
Yup
12:41
<willianmazzardo>
hmmm … i think there is no problem making some tests tomorrow
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13:11
<SirDerigo>
Good morning!! Someone know if i can change the default vncserver in Epoptes for Tigervnc?
13:12
<alkisg>
Yup, let me check how...
13:12
<SirDerigo>
alkisg: you are very nice, thank you so much
13:13
<alkisg>
SirDerigo: define VNCVIEWER=/path/to/tigervnc in /etc/default/epoptes-client
13:13
<SirDerigo>
alkisg: no changes required in the server?
13:13
<alkisg>
No
13:13
<SirDerigo>
alkisg: Thank you so much, tough i will have to get the code and build on my own
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13:29
<willianmazzardo>
AndreDeAbreuESil ola
14:15
<alkisg>
!gnome-fallback
14:15
<ltsp>
gnome-fallback: Unity, compiz etc are sometimes slow or buggy. To select gnome-fallback as your default session, install the gnome-session-fallback package, and put this in your lts.conf: LDM_SESSION="gnome-session --session=gnome-fallback"
14:15
<alkisg>
willianmazzardo: ^
14:15
<willianmazzardo>
ehehehehe
14:15
ok
14:16
to install is on ltspchroot right alkisg ?
14:16
<alkisg>
Yes
14:17
<willianmazzardo>
ok
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14:52
<TFDL>
Hello all,
14:54
Can you please tell me a way to start up and shut down ubuntu thin client remotely? this is because our thin client computers are under the floor we do not have an easy access to power it up or down?
14:54
Thank you!
14:56
<alkisg>
!epoptes
14:56
<ltsp>
epoptes: Epoptes is a computer lab administration and monitoring tool. It works on Ubuntu and Debian based labs with LTSP or non-LTSP servers, thin and fat clients, standalone workstations, NX clients etc. More info: http://www.epoptes.org
14:57
<TFDL>
Thank you <ltsp>!
14:57
<alkisg>
Haha
14:57
That's a bot
14:58
<TFDL>
oh yes alkisg
14:58
<alkisg>
:)
14:58
<TFDL>
alkisg why you often put the exclamation infront of a word like !epoptes
14:59
its meaning?
15:00
thanks again for the link.
15:00
<alkisg>
ltsp is a computer program
15:00
It remembers stuff
15:00
When we want to get reminded of that stuff, we tell it commands with ! in front
15:00
And if we tell it something it doesn't know, then it tells us that it doesn't know...
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15:00
<alkisg>
!doyouknowthat?
15:00
<ltsp>
Error: "doyouknowthat?" is not a valid command.
15:01
<TFDL>
wow
15:02
is <ltsp> open source :)
15:03
<alkisg>
Yes, it's called "supybot", google it
15:03
All IRC channels have one
15:03
<TFDL>
really
15:03
<alkisg>
(or a similar one)
15:04
<TFDL>
wow it see it.
15:05
Epoptes is so neat
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17:20
<willianmazzardo>
hi all
17:21
when I run epoptes, this error is showed up ...
17:21
an error occurred while connecting: 13: permission denied
17:22
im with non root user
17:22
and Im on epoptes group
17:27
solved
17:27
<Hyperbyte>
How?
17:27
That was quick, by the way. :)
17:28
<willianmazzardo>
# usermod -a -G epoptes user
17:28
logout and login ;)
17:28
<Hyperbyte>
ah!
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21:14
<david__>
hey
21:17
Quick question: What does LTSP use to get pixes from the server to the client? VNC,RDP,NX somthing else?
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21:29
<dead_inside>
pixes?
21:29
<other_ot1er_joe>
pixes?
21:29
you mean the initial pxe image?
21:29
<dead_inside>
you mean how does the display get from the server to the client?
21:57
<david__>
Yeah, I meant pixels. (not PXE!)
21:58
I assume it's not just raw X, is it?
22:04
Or, is it? I'm trying to understand how LTSP fits together.
22:12
The page at http://wiki.ltsp.org/wiki/Concepts says:
22:13
The thin-client then boots the downloaded Linux initramfs image, detects hardware, and connects to the LTSP server's X session. [...] The LTSP server transfers all graphical information to the thin-client over the network.
22:13
But how does that happen?
22:15
<other_ot1er_joe>
in a default setup. ldm spawns X session on the thin client folled by a greeter for the user to log in. Once the user logs in, an ssh session is started to the ltsp server creating a master socket for all subsequent processes
22:16
an ssh session connecting the client to the server, I should say
22:19
so, after login, programs are started on the server then forwarded to the thin clients local X display via an encrypted ssh tunnel
22:20
<david__>
Oh, so it really is just X? (albit over a compressed/crypted shh tunnel?)
22:20
<other_ot1er_joe>
correct
22:20
http://sourceforge.net/projects/ltsp/files/Docs-Admin-Guide/LTSPManual.pdf/download?use_mirror=softlayer-dal
22:21
here's the manual. It's a bit dated but it's where I got most of my info
22:21
that and reading through all the scripts
22:21
<david__>
So, i guess this is mainly for high speed LAN usage. Thank you
22:22
<other_ot1er_joe>
100mbps is the least recommended I believe
22:22
the faster the LAN the better, for sure
22:22
<david__>
We've got a so-so VPN'd WAN, and am looking for a solution that'll work good-enogh for basic usage.
22:22
yah, the little i've played with X, you need 100mbps or better
22:24
<other_ot1er_joe>
I've never seen a WAN implementation so I can say for certain but I'd guess performance would be moderate to poor at best
22:24
err poor to moderate
22:27
<david__>
I've tried raw VNC, and it works great. But, it's all that client management infrastructure that LSTP adds that would be really nice.
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