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


Channel log from 21 July 2010   (all times are UTC)

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04:24
<mil132_>
Hey alksig, is there a "preferred" thin client hardware list for LTSP?
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07:56
<ananke>
anybody happen to use ltsp with nx? i have it working with kde, and gnome-session-nx script. everything seems to be fine, except fonts are very ugly, almost like they're smaller than they should be. at the same time starting kde session without NX doesn't have that issue
07:56
i'm wondering if there is a simple fix for this, something obvious that i'm missing
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08:38
<mgariepy>
morning
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09:16
<komunista>
ananke: I have done some things with NX & LTSP without size problems
09:16
ananke: for both usages - as login screen and for some apps only
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09:40
<ananke>
hmm
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10:22
<ananke>
wonder what the issue could be. i'm not doing anything special with nx, and i'm not aware of any configuration regarding fonts
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10:28
<alaforest_>
Hi I need little help
10:29
ubuntu 10.04 ltsp 64bit server
10:29
64 bit thin client ok
10:30
32 bit client ==» please use a kernel appropriate for your cpu
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10:35
<alaforest>
hi I need little help
10:35
ubuntu 10.04 ltsp 64b
10:35
64 bit client boot ok
10:35
<cliebow>
alaforest, state your issue and someone will prob come back at you
10:36
<alaforest>
but not 32
10:36
ok
10:36
<cliebow>
heh you just did
10:36
<alaforest>
when i boot 32 client
10:36
ok you were reading it
10:36
sorry
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10:37
<cliebow>
im just guessing the image you created on that is a 64 bit image..there is a switch i think to specify ..but i am so far behind i cant help..
10:37
<vagrantc>
alaforest: sounds like you need to build an i386 chroot
10:38
alaforest: ltsp-build-client --arch i386
10:38
<cliebow>
there you got the debian master..
10:38
<alaforest>
yes i know that
10:38
<vagrantc>
good luck
10:38
<alaforest>
but boot process give point my thin client to /ltsp/amd64
10:39
<vagrantc>
you'll need to reconfigure dhcp then
10:39
edit /etc/ltsp/dhcpd.conf
10:39
invoke-rc.d dhcp3-server restart
10:40
you'll need to change the filename parameter
10:40
<alaforest>
ok the glitch is there
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10:41
<melhe_>
a follow up on alaforest's question: I have both amd64 and i386 images but how is one directed to the correct image? Is some scripting in dhcpd.conf needed?
10:41
<alaforest>
i guess yes for 10.04
10:41
this is the first time i see that
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10:46
<alkisg>
melhe_: there's no automagical process, you have to hardcode mac addresses to dhcpd.conf
10:47
It's much easier to just use a i386 chroot if you have both i386 and amd64 clients
10:47
(in the future, pxelinux will allow doing that automatically, but now that feature is still beta)
10:47
<melhe_>
ok. Yes, I have troubles logging in using i386 and just wanted to test amd64.
10:48
<alkisg>
You still have i386 installed?
10:48
<melhe_>
Yes, both. dhcpd.conf directs to i386.
10:49
<alkisg>
OK, and what's the login problem?
10:49
And, distro/version?
10:50
<melhe_>
My problem is that I can not login. LDM shows the login screen but when I have entered the username/pwd I always gets the error message "GLivb warning: getpwuid_r(): failed due to unknown user id"
10:51
<alkisg>
That's not an actual problem, just something that pulseaudio leaves on screen
10:51
I.e I also see it, and I can login fine
10:51
<melhe_>
server ubuntu lucid. Clients are a tired fujitsu lifebook and a test client using gpxe and virtualbox. Both clients gets the same error.
10:51
But I am redirected back to the login screen
10:51
<alkisg>
Can you see a login attempt in /var/log/auth.log on the server?
10:52
<melhe_>
yes, ssh login seems ok.
10:53
<alkisg>
You do have a desktop environment installed on the server, right?
10:53
<melhe_>
yes. I read about problems with compiz but it is disabled.
10:54
<alkisg>
Put SCREEN_02=shell and SCREEN_07=ldm in lts.conf, and after trying, check ldm.log on the client
10:55
<melhe_>
The ayth.log shows subsystem request for sftp and shortly thereafter I see the error message in the client.
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10:56
<melhe_>
ok, I test that. I tried setting the screen_07 to sdm earlier but there was no difference. During a trial-and-error session...
11:01
<alkisg>
melhe_: a typical logon / logoff in the clients shows that in auth.log: http://alkisg.pastebin.com/TxWTY3q3
11:02
Also, check that user's ~/.xsession-errors
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11:04
<melhe_>
I get the same lines except the polkitd lines. And my logout (Received disconnect from...) are two secs behind the login.
11:17
<alkisg>
And in ~/.xsession-errors?
11:19
<melhe_>
no related logs in .xsession-errors. But the ldm.log have a line "/usr/bin/xauth: error in locking authority file ..."
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11:42
<cliebow>
vagrantc guess the outside world isnt all it is cracked up to be!
11:43
<vagrantc>
hah
11:44
it's full of wonderful vegetables
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12:04
<melhe_>
alkisg: problem solved. The problem was wrong file permissions on the .Xauthority file. Thanks a lot!
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12:29
<ananke>
it seems that xrdp/nomad has been abandoned. is that true? for accelerating ltsp currently nx is the only option?
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12:44
<Mip5>
Morning Gang - I've got ltsp 10.04 running on a dual xeon (3 GHz) server with 8 gb of ram (PAE kernel). It seems slower than my install of 9.04 on the same hardware and clients (diskless workstations 1420 and 1520). By slower I mean that apps launch more slowly. Additionally, launching localapps (firefox, chromium) launch *much* more slowly. Any ideas on how to troubleshoot this?
12:50
<alkisg>
Mip5: do you still have the old 9.04 installation (e.g. as dual boot)?
12:50
If so, you could try htparm -tT /dev/nbd0 to compare the network speed, as e.g. nbdproxy might give you some performance hit
12:51
<Mip5>
In my searches for issues related to localapps, someone mentioned running the script "ltsp-localapps firefox" in the chroot. I didn't do this, but the browser indicates the host name (ltsp24), so I'm pretty sure it's running locally. What does that script do?
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12:52
<alkisg>
It's used internally to tell the client to launch firefox locally, you don't need to run it manually except for debugging.
12:56
<Mip5>
alkisg: thanks for your help. I have two servers in two different buildings, one is still 9.04. I just got a call - I've got to run (sorry!), but will compare the results of that command on the two servers.
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13:00
<Blinny>
Mip5: If for some reason you read this, you may wish to also check DNS settings. Sometimes different configurations can introduce latency.
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14:22
<ananke>
can lts.conf options be set via kernel options? i'd like to have different pxe boot entries for different window managers
14:25
<muppis>
You can use mac addresses to set things per client.
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14:26
<ananke>
yeah, i noticed that, but that doesn't address the issue at hand: i'd like clients to be able to select that
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15:43
<ananke>
argh, finally. so the problem with ugly nx fonts is due to NX inability to properly guess monitor's DPI
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16:41
<Mip5>
Hi Folks - I just read this on the ltsp page regarding upgrading the chroot: "Ubuntu 10.04 already has the ability to provide recommended updates by default. The rest of the instructions on this page are not necessary."
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16:43
<Mip5>
However, I'm not sure this is happening properly for me. I ran updates on the server, and chrooted and checked for updates again, and found some (for chromium, an app I installed as a localapp). Am I missing something, or does the chroot need to be updated manually if additional apps have been installed as localapps?
16:49
alkisg: I'm not sure if you're still there, but I got a strange result when I ran hdparm -tT /dev/nbd0 - it said /dev/nbd0z; No such file or directory
16:52
<alkisg>
Mip5: the chroot needs to be updated manually
16:53
And, run ps -ef | nbd-client to see the nbd device
16:53
| grep...
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16:54
<Mip5>
alkisg: all I get when I run that is my own ps request (no other entry related to the results of the search)
16:54
<alkisg>
That on SCREEN_02=shell?
16:54
Or on a normal thin client session?
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16:55
<Mip5>
I'm not in the building now, so that's the result of an ssh session to the server
16:55
(over vpn)
16:55
<alkisg>
It's supposed to be ran locally on the client
16:55
<Mip5>
oh - okay that helps
16:55
<alkisg>
To test the network speed + cpu speed (decompression) etc
16:56
Also, when you left, Blinny said this:
16:56
(09:00:09 μμ) Blinny: Mip5: If for some reason you read this, you may wish to also check DNS settings. Sometimes different configurations can introduce latency.
16:56
<talntid>
Anyone here ever had success booting a thin client over a distance, using a VPN? :)
16:57
<Mip5>
I should mention that my install wasn't quite right inially. I never got the thin client to boot. I I had to build the chroot by hand (as if I had just updated it). So, I wonder what else might be missing. My thin clients do boot now, but as I said, they launch apps more slowly than they did with 9.04
16:59
Related to Blinny's comment (I checked the logs when I first returned to IRC) I'll look into dns - but I wouldn't think that a dns issue would influence the load speed of apps (ie, cause apps to load more slowly)
17:00
<alkisg>
Mip5: then maybe you should try ltsp-build-client again, to make sure everything's right.
17:00
<Mip5>
talntid: I've only booted over 100 or gig speed network. I did once read an article on Linux Journal about wireless laptops pxe booting, and the results were grim.
17:01
alkisg: Thanks - I'll try that. I figured (wrongly, I guess) that ltsp-update-client would do a rebuild.
17:02
alkisg: - I mean ltsp-update-image
17:02
<alkisg>
No, it just compresses the files found in /opt/ltsp/i386 and puts the resultant virtual disk in /opt/ltsp/images/i386.img
17:04
<Mip5>
Oh! Well in that case, I should definitely build the client. Should I bother to save the one I have now, or should I trash it and rebuild? I'm guessing I'll have to reinstall localapps, but hopefully the other stuff I did (NAT iptables rules, lts.conf,) will still work with the newly built chroot.
17:04
<alkisg>
One quick way is "sudo mv /opt/ltsp /opt/ltsp-previous-try"
17:05
<Mip5>
okay - and if it's not any better, just reverse the mv?
17:06
<alkisg>
right, delete the new /opt/ltsp and revert the mv
17:09
<Mip5>
alkisg: Thanks for your help. I'll head into the building tomorrow to compare the clients. Thanks again.
17:21
pastebin:
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17:24
<Mip5>
alkisg: I'm getting some errors on the ltsp-build-client - can you remind me how to link to the output of a comand (pastebin?)
17:24
<alkisg>
!pastebot
17:24
<ltspbot`>
alkisg: "pastebot" :: The LTSP pastebot is at http://ltsp.pastebin.com. Please paste all text longer than a line or two to the pastebot, as it helps to reduce traffic in the channel. Don't forget to paste the URL of the text here.
17:25
<talntid>
ltsp-build-client | pastebinit
17:25
=D
17:26
<Mip5>
http://ltsp.pastebin.com/8ABeECQH
17:26
<alkisg>
Mip5: you mean the debconf lines? Those aren't actual errors...
17:27
<Mip5>
I get the lines: "debconf: unable to initialize frontend: Passthrough" and the following lines several times (always appear to be the same error)
17:27
alkisg: Yes - those are the lines I'm referring to
17:27
<alkisg>
It's ok to get that, it's not an actual error.
17:29
<Mip5>
alkisg: Okay - thanks. I get the optomistic: Info: LTSP client installation completed successfully, so hopefully all is well.
17:29
<alkisg>
Nice. It's late here, so good night all.
17:29
<Mip5>
I'll check in on it tomorrow in the am. Thanks again for your help!
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18:45
<joulez>
Hello, I'm looking for some documentation on how to get audio working. Does anyone have any tips or links?
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19:17
<joulez>
I have one of these http://www.ciao.co.uk/Productinformation/HP_Compaq_Thin_Client_t5730_Sempron_2100_1_GHz__6852781
19:17
how do I setup the videocard?
19:17
graphics controller.
19:33
<abeehc>
!radeon
19:33
<ltspbot`>
abeehc: Error: "radeon" is not a valid command.
19:34
<joulez>
its ok it dedected it.
19:34
Still need to setup sound though.
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19:37
<abeehc>
right on good luck.
19:38
<joulez>
i have audio working
19:38
<abeehc>
ok, i'm not suprised.
19:39
<joulez>
the volume is really low though.
19:39
<abeehc>
better than really loud
19:39
<joulez>
:P
19:39
<abeehc>
lts.conf has some pertinent settings as far as volume
19:39
!lts.conf
19:39
<ltspbot`>
abeehc: "lts.conf" :: http://manpages.ubuntu.com/lts.conf
19:40
<abeehc>
iirc
19:43
<joulez>
abeehc: do you know if I can run 3d apps?
19:47
well everything else works.
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19:56
<joulez>
rebooting
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20:55
<jammcq>
hellooo friends
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22:21
<alaforest_>
just to say thanks
22:21
that is in dhcpd.conf
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22:57
<sweetpi>
vagrantc: I was talking to alkisg the other day about a pxelinux menu editor gui with ltsp support I am working on, and he said "the devs" were talking about wanting something like that. do you know any details of what features would be wanted?
22:59
<vagrantc>
i don't know what would be wanted specifically...
22:59
just something that's not too rigid, but makes things easy by default
23:01
<sweetpi>
oh, so pretty simple. like a checkbox for nbd or nfs on an entry?
23:20
<vagrantc>
well, that's more than just a pxelinux menu editor...
23:24
<sweetpi>
yes the menu editor is what i am working on, but i thought maybe a ltsp setup gui would be nice as well
23:28
right now i have a tree style view that allows you to add/remove/edit/move pxelinux menu entries. it saves as xml, and i wrote another tool that converts that to the actual menu file(s)
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