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


Channel log from 21 February 2011   (all times are UTC)

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01:04
<Hyperbyte>
Morning everyone!
01:04
<muppis>
Morning.
01:05
<elias_a>
Good morning - Hyvää huomenta!
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02:05
<gnunux>
hi
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03:21
<jimjimovich>
Hi guys, is there a way to connect printers to terminals besides using the "jetpipe" program? We have a lot of problems with it crashing
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04:54
<zamba>
i've set the TCs to autologin.. but i want to be able to log off and then get the login window.. when i log off, i'm just logged back in some seconds later
04:56
<alkisg>
I think that was once filed as a feature request
04:56
Not sure if the new ldm will support it
05:21
<zamba>
alkisg: got a ticked id for that?
05:22
<alkisg>
Nope, didn't search
05:22
<zamba>
with the "new ldm", what do you mean?
05:22
<alkisg>
There's been an ldm partial rewrite recently
05:23
With plugins etc, to appear in natty / wheezy
05:27
<zamba>
ah, ok
05:27
what about the problem with shutting down the computers when autologin is enabled?
05:28
when trying to either shutdown or reboot, i'm just logged back in again
05:29
<alkisg>
https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/491940
05:29
<zamba>
oh
05:30
<alkisg>
You can easily solve that if you add the greek schools ppa to your sources
05:30
But that also contains a few other updates programs
05:30
<zamba>
like?
05:30
<alkisg>
E.g. new ltsp version with some bug fixes etc
05:30
<zamba>
so no potential downsides?
05:30
<alkisg>
Potentially no, it's used by many greek schools
05:31
Or you can just install that one .deb (gnome-session)
05:31
<zamba>
hm
05:31
<alkisg>
(ah only 10.04 is supported by that ppa)
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05:31
<alkisg>
https://launchpad.net/~ts.sch.gr/+archive/ppa
05:32
<zamba>
i'm running 10.04.2
05:32
<alkisg>
Yup, it should work there
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05:32
<zamba>
apt-get upgrade should work?
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05:32
<alkisg>
If you add the repository? Or without it?
05:32
<zamba>
gnome-session is already the newest version.
05:33
if i add it
05:33
<alkisg>
Sure
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05:33
<zamba>
apt-get install gnome-session
05:33
<alkisg>
2.30.0-0ubuntu2~ppa0
05:33
<zamba>
when doing that ^
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05:33
<alkisg>
sudo add-apt-repository ppa:ts.sch.gr && sudo apt-get update && sudo apt-get dist-upgrade
05:33
Try that^
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05:33
<zamba>
The following NEW packages will be installed: gwibber-service-facebook gwibber-service-identica gwibber-service-twitter python-libproxy
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05:33
<zamba>
The following packages will be upgraded: gwibber gwibber-service pm-utils
05:33
not gnome-session
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05:34
<zamba>
hm, hold on
05:34
haha
05:34
stupid :p
05:34
<- :p
05:34
<muppis>
Happens sometimes.
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05:54
<zohars>
Hi there, could someone help me with x_mode_0 being ignored?
05:55
<alkisg>
zohars: distro/version?
05:55
<zohars>
alkisg: ubuntu(edubuntu)9.10
05:55
<alkisg>
!pastebin
05:55
<ltspbot>
alkisg: "pastebin" :: the LTSP pastebin is at http://ltsp.pastebin.com. Please paste all text longer than a line or two to the pastebin, as it helps to reduce traffic in the channel. Don't forget to paste the URL of the text here.
05:55
<alkisg>
zohars: paste your /var/lib/tftpboot/ltsp/i386/lts.conf
05:56
And the output of this command, on the client: xrandr
05:57
<zohars>
alkisg: ok, I'll go tidy it up a bit (from my failing attempts) and return with it.
05:57
<alkisg>
ok
06:00
zohars: since you're at it, don't use X_MODE_0
06:00
But instead, use XRANDR_MODE_0=1024x768
06:00
(or whatever else you want)
06:01
<zohars>
trying now
06:02
still no go, pasting
06:04
ltsp.conf - http://ltsp.pastebin.com/5iTeeF06
06:04
actually can't run xrandr since i'm in a rdesktop wrapper.
06:05
<alkisg>
Are we talking about the second mac address?
06:05
Sorry
06:06
<zohars>
there's just default and a mac.
06:06
<alkisg>
OK, do the following:
06:06
Remove X_MODE_0
06:07
Temporarily add SCREEN_07=ldm
06:07
Remove CONFIGURE_X=True
06:07
And reboot the client
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06:07
<alkisg>
Ah let me see if we have an xterm screen...
06:08
Nope
06:08
So go with the temporary SCREEN_07=ldm
06:08
To get a graphical xterm to be able to debug this more easily
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06:12
<zohars>
xrandr - http://ltsp.pastebin.com/uxsy7SA8
06:12
<alkisg>
zohars: now, try this: ltsp-localapps xterm
06:12
An xterm will open
06:12
On *that* xterm, run: lspci -nn -k | grep -A 2 VGA
06:13
What's the output there?
06:13
(if it's just 2-3 lines, you can paste here if you want)
06:14
<zohars>
Actually I don't think that's the direction to go. I'm trying this on a virtualbox guest (vb4.0.4 on win7pro64) but the exact same problem exists with my actuall clients which are dell gx260/270/280
06:15
The detected module is vboxvga but X falls to vesa (I've seen it in the log file).
06:15
<alkisg>
zohars: ok, here's the solution without going through the necessary steps
06:16
The problem is that your graphics card driver can't get the monitor EDID, the info about its timings
06:16
So even when you force 1024x768, it refuses to set it, because it thinks that your monitor can't support it
06:16
You can set the timings yourself though
06:16
The tricky part is that not all drivers correctly respect timings, that's why I was asking
06:17
<zohars>
you mean like "X_MODE_0 = 1024x768 75 1024 1048 1192 1296 768 771 777 806 -hsync -vsync"
06:17
<alkisg>
If you set *any* timings in virtualbox, it will assume the maximum allowed ones, not the ones you specified
06:17
No
06:17
I mean, put this in lts.conf:
06:17
X_HORZSYNC=33-88
06:17
X_VERTREFRESH=59-61
06:17
XRANDR_MODE_0=1024x768
06:18
# XRANDR_MODE_0_RATE=60 # Only use this if needed
06:18
<zohars>
anything else before I go try it?
06:18
<alkisg>
In vbox? No, go ahead and try it
06:18
<zohars>
(btw thanks a lot, you're helpful)
06:19
<alkisg>
For the real clients, I'd need to know your actual monitor, and preferably the driver too
06:19
E.g. you might have old CRTs there with 85 Hz vertical refresh reate
06:19
*rate
06:21
<zohars>
about vbox: no go. X doesn't start (exact lines you suggested)
06:22
<alkisg>
Can you paste your lts.conf again?
06:22
And, is the mac address the one of the vbox client?
06:22
<zohars>
about actuall monitors: it varies from 17" crt's (upto 85hz@1024) to 24"lcd's (60hz)
06:22
sure, otherwise the changes wouldn't have affected it.
06:23
SCREEN_03 = shell
06:23
SCREEN_07 = ldm
06:23
X_HORZSYNC = 33-88
06:23
X_VERTREFRESH = 59-61
06:23
XRANDR_MODE_0 = 1024x768
06:23
(eof)
06:24
<alkisg>
No X_MODE_0 and no CONFIGURE_X above, right?
06:25
<zohars>
I have an X_MODE_0 at the default section. commenting it temporary and checking...
06:25
<alkisg>
Remove it completely, it's obsolete
06:26
It's only used when xrandr doesn't work, but I've yet to see xrandr not working
06:26
<zohars>
still no go
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06:26
<alkisg>
What's the output? Any messages?
06:26
Also, try removing the rdesktop screen
06:27
You can put it back later on. I'm not sure if the mode setting code runs OK for all X screens
06:27
<zohars>
just a login prompt (text) with intervalled failed attemp of X starting (flashes). should I go look at Xorg.2.log?
06:27
<alkisg>
Try removing the rdesktop screen first
06:27
<zohars>
Can't remove the rdesktop section. It's a production system.
06:27
<alkisg>
Override it locally
06:27
<zohars>
k
06:27
<alkisg>
So, SCREEN_03=ldm instead of SCREEN_07=ldm
06:28
*2
06:29
<zohars>
still no go. should I paste it again at pastbin? (the whole thing)
06:30
http://ltsp.pastebin.com/t0erTwM3
06:30
<alkisg>
X_VERTREFRESH = 33-88
06:31
Try this for vbox, but I don't think it would help
06:31
And then check xorg log
06:31
Can you try with a real client?
06:31
<zohars>
not right now.
06:31
<alkisg>
Maybe you have a old vbox version which behaved differently than the ones I've tried
06:32
<zohars>
it's the newest 4.0.4
06:32
<alkisg>
OK I have that here, let me try...
06:37
(while it boots) did you try anything else, which you didn't revert? E.g. a custom xorg.conf or anything?
06:38
<zohars>
didn't tried a custom xorg.conf although it crossed my mind. seemed like to much hassle if it could be managed from lts.conf
06:38
<zamba>
solution for remote shutdown of TCs?
06:38
enable sshd in the chroot?
06:39
and add the public key?
06:39
<alkisg>
zamba: did you install italc? You can use that
06:39
If not, then there's a wiki page for it
06:39
https://help.ubuntu.com/community/UbuntuLTSP/AutomatedTCShutodwn
06:40
Heh it's misspelled , I wonder why google doesn't like it...
06:40
*wondered
06:40
zohars: just tried it here again, worked fine in my lucid with vbox 4.0.2
06:40
X_HORZSYNC=33-88
06:40
X_VERTREFRESH=33-88
06:40
XRANDR_MODE_0=1024x768
06:41
<zohars>
I'm with karmic. perhaps upgrading is the solution.
06:41
<alkisg>
No, i don't think so
06:42
I've been seeing that problem and applying that solution since a long time, before karmic
06:42
<zohars>
oh
06:42
<alkisg>
Are you sure you have not modified anything else? Then upload your xorg log
06:42
<zamba>
alkisg: well.. i need an automated remote shutdown :)
06:42
<alkisg>
zamba: ok check the wiki link above
06:42
<zohars>
say, alkisg, if it's not rude, are you gonna be here in about an hour? the guys at the office wants to go to lunch and I'm holding them back.
06:43
<alkisg>
zohars: no, I'll be later on though, in e.g. 5 hours
06:43
<zamba>
alkisg: yeah, i've read that.. so i guess it's sshd and public keys for me :)
06:43
<alkisg>
zamba: if you're to install sshd, at least create a startup script that regenerates your host keys
06:43
Otherwise it's insecure
06:43
(sshd in the chroot, with all the private keys the same in all the clients)
06:44
<zohars>
okay, thanks a lot alkisg. I hope I'll catch you later. Bye for now.
06:44
<alkisg>
bb
06:44
<zamba>
alkisg: btw.. italc won't run on the tc server :)
06:44
alkisg: (why am i not surprised)
06:44
murphy's law again
06:45
<alkisg>
Heh. Nope I promised myself I won't help anyone, not even myself, debug italc anymore :)
06:45
<zamba>
"There seems to be no iTALC service running on this computer or the authentication-keys aren't set up properly. The service is required for running iTALC. Contact your administrator for solving this problem."
06:45
<alkisg>
I tried sending patches to the author and didn't get a reply
06:45
<zamba>
i did ssh -X <ip>
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06:51
<basas>
hello
06:51
<zamba>
hi there!
06:52
<basas>
i have one problem and i cant resolve it :)
06:52
do you help me ?
06:53
<alkisg>
!question
06:53
<ltspbot>
alkisg: "question" :: if you have a question about ltsp, please go ahead and ask it, and people will respond if they can. please also mention the linux distro and release you're using. :)
06:53
<basas>
i set up\:)
06:53
:)
06:53
i set up whole enviroment and ltsp cluster and connect it with AD windows 2008
06:54
and problem is when i try to log in on thing client
06:54
i want to get user name and password only from
06:54
AD
06:55
but when i type wrong password or user name thin client want me to put password again something like this
06:55
basas@10.10.100.184 password:
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06:56
<basas>
it looks like the server not found a AD user and password and try to get it from local
06:56
but i dont want that
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06:58
<basas>
i only want to check pass and user name with AD and if they are wrong i dont want to try log in on local account
06:58
how to disable this ?
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07:03
<Faithful>
mistik1, how is it?///////
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07:12
<basas>
anyone?
07:14
<alkisg>
basas: that's not LTSP related, it's just configuring server + AD
07:14
So try asking in #ubuntu or in #ubuntu-server
07:15
<basas>
ok
07:15
thank you
07:15
<alkisg>
You can also try here later on, maybe someone will know about AD, but not everyone uses it
07:15
<basas>
and sorry for my mistake
07:15
ty
07:15
ok )
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07:45
<zamba>
alkisg: no worries about ssh keys
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07:48
<zamba>
or what do you mean could be the potential security issues there?
07:50
i basically need a client/server model for turning tcs on and off
07:50
for turning them on i have WoL, so that's no biggie
07:50
but for turning off i have used ssh so far
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08:04
<zamba>
alkisg: how long before the session times out on the tc server?
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08:08
<zamba>
doing a netstat on the server i see connections in ESTABLISHED mode, even though the remote end has been shut down for more than an hour
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08:10
<zamba>
doing a killall -u <user> on the server works, but i can't do this every day
08:11
<alkisg>
man tcp
08:11
The default keepalive timeout is 2 hours 11 mins
08:11
<zamba>
ah, ok
08:11
<alkisg>
About ssh, if you have the same private keys everywhere, it's a security concern
08:12
<zamba>
you mean that the server has the same private keys?
08:12
the servers have*
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08:14
<alkisg>
The chroot sshd keys are the same for all clients
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08:22
<zohars>
alkisg: hi, i'm back. in the meantime 2 things has happened:
08:23
1. disabling the X_MODE_0 = 800x600 caused some users who've restarted their stations to scream at me because they booted to max resolution available.
08:23
(no biggie, I reverted and all is well now)
08:23
<alkisg>
Use XRANDR_MODE_0=800x600 there
08:24
<zohars>
2. I've tried with a normal pc (old sis vga card) and it works but only with X_MODE_0, not with XRANDR_MODE_0
08:24
(answering your last comment)
08:25
<alkisg>
Check what `xrandr` reports on that
08:27
<zohars>
a lot of stuff. min/current/max resolutions who seem to be right for the monitor and a long list of available combinations.
08:29
since when x_mode_0 is deprecated? I'm using 5.1.90-0ubuntu3 and it's working. also all the docs I've seen talk about using x_mode_0, not xrandr_mode_0
08:30
<alkisg>
It's not exactly deprecated, it's still supported
08:31
But since xrandr works on most cards, it's usually better to use it
08:31
This way you allow the user to select other resolutions, if he needs to
08:31
Games, video playback, etc etc
08:32
And also xrandr makes multi-monitor setups easier
08:33
<zohars>
okay, this is all nice but not really needed for my setup.
08:33
<alkisg>
About the documentation, it's in the man page: manpages.ubuntu.com/lts.conf
08:33
Sure, if you need it, use it
08:33
For drivers that support XRANDR, the XRANDR_MODE_* variabled are
08:33
preferred. See the XRANDR section.
08:34
But if they don't, of course you can't use the xrandr lts variables
08:34
<zohars>
ok
08:35
i'll try to solve my problem on the other pc's on my own now.
08:35
do you have any recommendation for a new install? distro/version?
08:35
<alkisg>
I'm using ubuntu 10.04
08:35
But see the topic for recommentations
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08:38
<zohars>
sorry, i've lost you. what/where topic?
08:38
<alkisg>
The irc topic, the title on your window/
08:38
?
08:38
Check out Ubuntu, Debian and Fedora for awesome integration. Gentoo is getting very close and Opensuse has kiwi-ltsp.
08:38
<zohars>
oh :facepalm:
08:38
wasn't using irc for a long time.
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09:09
<mgariepy>
good morning everyone
09:09
<vvinet>
good morning marc
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09:24
<zamba>
how can i set up auto login using keys instead of passwords?
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10:20
<jhutchins>
alkisg: The documentation problem is that the lts.conf manpage available on the web does not match the options in the packages distributed by debian without the manpage.
10:21
alkisg: I have not yet been able to get local storage working because the options don't match, and the various documents on the web don't agree with each other or with the available packages.
10:21
<alkisg>
Heh, quick reply (from yesterday :))
10:21
Did you file a bug report about it?
10:21
<jhutchins>
Half the documentation still refers to creating boot images, the other half agrees with the packages that don't require it any more.
10:22
alkisg: I've filed one about the documentation being missing from the packages.
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10:22
<alkisg>
Doesn't debian have an `ltsp-docs` package?
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15:04
<jtwood>
I am running into a problem I've never had with LTSP on a clean install on Ubuntu 10.04. I get an nbd server not available message-checked the ports and everything seems good. Looked through google to no avail. Any ideas?
15:06
<alkisg>
Do you get a busybox shell?
15:06
<jtwood>
Yes, I did
15:06
<alkisg>
Try: nbd-client server-ip 2000 /dev/nbd0
15:07
(in busybox)
15:07
<jtwood>
Yeah, as soon as I get the thin client where it needs to be.
15:07
I had a test server set up and decided to start creating the production server. Test server worked just fine no problems like this
15:14
Ok, I get a server closed connection...double checking all the ports and making sure the services are up and such. Anything in particular that you know of?
15:15
<alkisg>
grep nbd /etc/inetd.conf
15:16
grep nbd /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default
15:16
ls -l /opt/ltsp/images/i386.img
15:18
<jtwood>
I swear I have a gremlin. inetd.conf is howing port 2001 now - earlier it was fine...pxelinux.cfg/default shows 2000
15:20
i386.img shows root:root -rw-r--r--
15:20
<alkisg>
Fix inetd.conf and restart it: sudo invoke-rc.d openbsd-inetd restart
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15:21
<jtwood>
Haha...yeah, thanks alkisg. I'll let you know in a minute if that made it happy. Have a feeling it did. Swear I just checked it an hour ago and it was fine
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15:23
<jtwood>
alkisg: yeppers, that fixed it. Appreciate the help. Just really starting into LTSP - any good hints and tips sites to check out and read up?
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15:23
<alkisg>
!docs
15:23
<ltspbot>
alkisg: "docs" :: For the most current documentation, see https://sourceforge.net/apps/mediawiki/ltsp/index.php?title=Ltsp_LtspDocumentationUpstream
15:23
<alkisg>
And, https://help.ubuntu.com/community/UbuntuLTSP
15:25
<jtwood>
yeah, the UbuntuLTSP is very nice. Thanks for the docs link...seems like I usually find older doc. Never used IRC beore, interestingly enough. Been playing on internet since the old days of gopher.
15:27
<alkisg>
'night all :)
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17:32
<nutron>
vagrantc: just so there's some sort of "closure" since you spent a lot of time with me trying to diagnose the "pauses".
17:32
It was a hard drive in the raid.
17:33
No dmesg output.
17:33
No raid failure.
17:33
The only way I found out it was dying was running hdparm -Tt on each of them. The failed drive then complained via dmesg. Lame :/
17:33
Anyway, it's fixed. Thanks for your efforts.
17:34
<HrdwrBoB>
ouch
17:34
the drive was probably recovering the errors
17:34
but it was taking a long time to do so
17:34
<nutron>
HrdwrBoB: ahh yes and thanks to you too, you helped :P
17:34
HrdwrBoB: well it'd been that way for over a week. Smart wasn't reporting anything at all.
17:35
<vagrantc>
nutron: glad to hear you figured it out :)
17:35
<HrdwrBoB>
yeah I've spent a lot of time over the years fixing various raid sets
17:35
<nutron>
I hate it when it's mystical.
17:35
<HrdwrBoB>
if you lost the metadata on raidset drives
17:35
<nutron>
HrdwrBoB: yeah I'm not new to them either, been playing w/raid for eons it feels. This one was super odd in my books.
17:36
<HrdwrBoB>
you can rebuild them with a little perl script and a bit of pereservenrance and using 'file'
17:36
perseverance
17:36
<nutron>
Oh heh, rough. Nah, I just purchased 4 seagate barracuda xt's (as close to enterprise as I can get with 2tb drives) and am in the midst of replacing the WD blacks that have been failing.
17:38
using sar somewhat helped, but it still didn't explain the large pdflush runs. That's one thing I need to learn more about.
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17:39
<HrdwrBoB>
yeah
17:39
I use hitachis at home
17:39
much cheaper than the overpriced XTs
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17:44
<nutron>
HrdwrBoB: me too. Hitachis are the best.
17:44
from my past experience
17:46
<HrdwrBoB>
I previously used seagates
17:46
but no 7200rpms for a reasonable price
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