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when I try to log in to a fat client, it restarts the gdm and has "nbd9: unknown partition table" in /var/log/messages, does anyone have any idea what the problem is?
rickogden: the problem is that you're using gdm instead of ldm :)
sorry, I meant ldm
"the graphical login screen bit"
Ignore the nbd9 warning, it's not relevant
Do you get an entry in the server /var/log/auth.log for the client trying to login?
alkisg: yes I do
OK, then it might be that X is crashing. What graphics card on the client, and what on the server?
alkisg: it's an onboard intel card
this was working perfectly until I installed netbeans
(on the fat client)
Hmm, that shouldn't matter, I believe something else caused the problem
Ubuntu 10.04 64 bit
With a 32bit chroot?
with i386 fat client
just out of interest, is the 64 bit chroot stable?
I think in general canonical, mozilla, adobe etc etc suggest using 32 bit anywhere
So personally I'm using 32bits even on servers, with pae so that they see all the ram
OK... for starters, get a local shell on the client:
alkisg: SCREEN_02: to get a root shell on an Ubuntu thin client: https://help.ubuntu.com/community/UbuntuLTSP/ClientTroubleshooting#Using%20a%20shell%20SCREEN.
just some of the terminals have 4gb of RAM, and with it being a fat client I wondered if it would be worth it
You could put a -pae kernel in the chroot
alkisg: already got that
I'm logged in as root on the client
But for casual use, 3 or 4 GB RAM don't make a difference to clients
OK. What's the output of `lcpci -nn -k | grep -A 2 VGA` ?
vga compatible controller
sorry, this test machine isn't an onboard one (sorry) it's an nVidia GeForce 8400gs
Right. Let's see if temporarily disabling compiz helps:
alkisg: disable-compiz: To disable compiz for all users, run: sudo gconftool-2 --direct --config-source xml:readwrite:/etc/gconf/gconf.xml.mandatory --type string --set /desktop/gnome/session/required_components/windowmanager metacity.
Run this command as root on the client. It's temporary, it'll go away on the next reboot.
Then try to login *without rebooting the client*
nope, exactly the same
rickogden: sorry I was afk. Two questions, (1) does the lspci command above show that the nouveau driver is in use? and (2) do other clients work?
1) yes 2) not tried, as I'm only testing it with one test client at the moment (and it used to work)
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rickogden: ok, try with another client, it's the fastest way to see if the problem is X related or not
Even a virtual one (e.g. vbox) would do
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alkisg: just tried a different client with different graphics card and processor
and it did exactly the same thing
OK. Can you (1) also try with another user, and (2) check the ~/.xsession-errors file, or pastebin it?
I assume that you didn't get any apt-related errors when you installed netbeans, right?
alkisg: I already checked with a variety of different users
Because netbeans, java etc shouldn't be at all related to login problems
But if e.g. you got a prompt to select between gdm and ldm, and you selected gdm, then that would make a difference
and should the .xsession-errors file be on the client or the server?
On the server, and it's mounted on the client with sshfs
Btw you're using sshfs, not nfs, right?
(the default is sshfs)
alkisg: I'm using the default which I think is sshfs
ok, if I do a tail -f on the .xsession-errors file and try to log in, nothing is added
it doesn't look like it's getting as far as mounting the sshfs
ah ok, getting an output now
You did say you got a login at /var/log/auth.log on the server, right?
id: cannot find name for user ID 1007
X Error of failed request: BadValue (integer parameter out of range for operation)
Failed to start message bus: Memory allocation failure in message bus
EOF in dbus-launch reading address from bus daemon
That doesn't sound good. Are you using something non-standard wrt user accounts? LDAP or anything/
I am using LDAP, but this isn't an LDAP user
I've tried both LDAP and non-ldap and both are the same
I can ssh in fine
If you run this as root on the client, you don't see any output, right? pgrep gdm
While this does give you output: pgrep ldm
rickogden: from ldm, go to the preferences button, and select the "xterm" session there.
Then try to login. Does the xterm session work?
alkisg: I've already been through them all and all have the same result
I suspect something goes wrong with the logic that copies the user accounts from the server to the client
E.g. if you had a syntax error in your server /etc/passwd, maybe the bash script that handles it would choke on that
And would result in no user accounts being transfered to the client
the cursor changes to "working" then the whole screen goes black apart from a text cursor in the top left hand corner, then the ldm starts back up
But debugging that is a little tricky to do over irc
strange how you can log in locally, via ssh and via nx perfectly though?
I've not altered any of the user settings at all
I might just recreate the fat-client from scratch
But you say that you can login from ldm too
I.e. you see an entry in the server auth.log
Logging in isn't the problem; maybe getting the user accounts list is the problem
when I try to login using ltsp it is logged, then says "subsystem request for sftp" and then "Received disconnect from..."
Yup, that sounds like it's failing *after* login. And the message about the missing uid makes me thing about the bash script that handles user transfer
and yet the only thing changed between it working and it not working is the running of ./netbeans-install.sh on the chroot
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If I had to guess, I'd guess that the problem is on the server, not in the chroot. E.g. a malformed /etc/passwd.
Anyway, gotta go, later... :)
thanks for all your help alkisg!
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Hyperbyte: alkisg: The LTSP oracle. Our beacon of hope in the world of LTSP. With the guidance of this divine emperor, we shall prevail..
All hail alkisg.
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hi, i am looking at k12ltsp. can i just download the live demo, burn to dvd and reboot? will i then have server capabilities, and machines with pxe can boot from me?
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good morning everyone
heya, morning :)
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hi Hyperbyte :))
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Hyperbyte: enjoying the weather?
Not this morning, no.
Had to go to city hall first, for passport... (going on vacation to Norway in august)
Which is the other direction from work...
Ended up spending a little under an hour on my scooter in the rain...
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Hey all! I'm using LTSP on Ubuntu and have a mixed environment with thin and fat clients.
I've tried setting the PATH variable in /etc/environment and /etc/profile on the fat client image, but the setting doesn't take.
When students open the terminal, the PATH is still the default value.
(I teach programming, so students use the terminal quite a bit.)
toddobryan: afaik ldm doesn't source /etc/profile, that's why it doesn't work
search launchpad, there's a bug report about it + a workaround
OK...I'll go look.
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Is ldm LightDM?
alkisg: I do not know about 'ldm', but I do know about these similar topics: 'ldm-trunk', 'ldm-source', 'ldm-dualhead', 'ldm-po'
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!learn ldm as LDM is the LTSP Display Manager, required for LTSP thin/fat clients, because it authenticates the users to the server via SSH.
alkisg: The operation succeeded.
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Hyperbyte: lts: Long Term Support. Ubuntu usually releases one of these every two years. Instead of the 18 months support period, these are supported 5 years for server packages and 3 years for desktop packages. So far, that's: 6.06 (now end of support), 8.04 (only supported for servers) and 10.04. The next one will be 12.04..
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alkisg: Shouldn't a PATH setting in /etc/environment work? Do you think it's getting reset somewhere later?
toddobryan: which /etc/environment? in the server or in the chroot?
Or do I need to set it in the server?
I can do both...
Did you update your chroot? If you cat /etc/environment on a fat client, is it there?
It is, and it has the correct PATH in the file.
But if you echo $PATH in the terminal, it's just the default PATH.
I think that currently it should be working for fat clients, but not for thin...
I'll be at school tomorrow and will check everything to make sure, but I don't think it's working for fat clients.
|15:58||* alkisg is too deep into delphi code to task-swtch to ltsp code right now :D|
Thanks. If you have time to look into it later, I'd appreciate it.
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when attempting to boot a fat client it disconnects after nbd recieves the size of the file/device http://paste2.org/p/1520314 DHCP and everything else seems fine, ubuntu boot screen appears momentarily the first attempt
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!quiet-splash | echo nivardus:
nivardus: quiet-splash: to disable the splash screen in Ubuntu, in order to see any boot error messages, run `sudo gedit /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default` and remove quiet splash ..
alkisg: you really are advancing this !thing...
nice idea/time saver.
Hey dgroos, how are you? Yeah it helps, most people here have reoccuring questions
alkisg and ltsp: not much more to go by: https://lh3.googleusercontent.com/-9o3OM983y_k/Th8jWi012eI/AAAAAAAAAYQ/M8bjsBIf4ZE/s640/IMG_20110714_131125.jpg
nivardus: first, ltsp is a helper bot that just remembers things and tell them back when someone instructs it,
and second, this screenshot tells that the nbd disconnection *isn't* the problem
alkisg: Pretty good, busy with my summer :)
Just before logon, a deliberate nbd connection/disconnection happens. So ignore that warning.
How are you doing?
So, moving on, it might be an X related problem. Can you try putting SCREEN_07=shell in your lts.conf ?
dgroos: fine - unfortunately too busy with my phd. Fortunately I won't miss my vacations because of it :D
alkisg: Good. I'm taking off next year from teaching to finish mine--do dissertation.
...though it is filling up my summer some.
alkisg: after defining SCREEN_07=shell in my image's default lts.conf area behavior is unchanged.
actually no, it's loading lts.conf from tftpboot/ltsp/i386 instead of the fatclient image's directory. I have a prompt
at least now I can troubleshoot the x problem, thanks :)
!whatis nomodeset | echo nivardus
nivardus nomodeset: Unfortunately, Kernel Mode Setting (KMS) doesn't work well with some cards. To disable it, open /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default and replace quiet splash with nomodeset ..
Try this, it might help.
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alkisg: "init: udev-fallback-graphics main process (1150) terminated with status 1 \n init: gdm main process (1164) killed by TERM signal" am I missing drivers?
or maybe shell issues from 11.04
nivardus: lspci -nn -k | grep -A 2 VGA
This will tell you your graphics card + driver in use
What's the output?
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Intel Corporation 82945G/GZ Integrated Graphics Controller [8086:2772] (rev 02) \n Subsystem: Dell Device [1028:01ad] \n Kernel modules: intelfb, i915
I started x manually I'm on the desktop on the ltsp client atm, mm
nivardus: gdm? You shouldn't have gdm on the client, you should be using ldm instead
What do you have there?
/usr/sbin/ldm but in my fatclient chroot, maybe it's loading from i386 even though I've set it to boot the fatclient image in dhcpd.conf
You don't need 2 separate images, one fat chroot can serve both thin + fat clients
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To see which image it loaded, on SCREEN_07=shell, cat /etc/ltsp_fat_chroot
the fat client path is in ltsp_chroot not ltsp_fat_chroot so it's being loaded as a thin client I presume...
starting ldm manually: GLib-CRITICAL **: g_strsplit: assertion 'string != NULL' failed \n No such file or directory: No such file or directory...
OK so to sum up, you're having problems with X on a thin chroot, right? You want to troubleshoot this? Or you want to try with the fat chroot instead? What do you have in your lts.conf currently?
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SCREEN_07=shell is the only argument (in [default] )
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I need to head out, but thank you very much for your patience and advice, alkisg. I think some of the issues may be from using ltsp server on an existing desktop machine, as I'm not sure why it would be trying gdm otherwise
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Speaking of !quiet-splash... I disabled the splashscreen on my LTSP installation, and me, as well as collegues, have the notion that the clients boot much faster
Is this between our ears, or do they really boot faster?
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Is LTSP used with a variety of host Linux distributions? Are there a few that are most prevalent?
ball: LTSP should run be able to run on any Linux distribution, but setup will be difficult
Ubuntu, Debian and Fedora have best LTSP integration, for easy installation.
Debian I haven't tried, but supposed to be good. Fedora's integration is outdated, doesn't work anymore since Fedora 12 without tweaking
Ubuntu has a special LTSP spin, Edubuntu.
It's what I'm using after having ditched Fedora.
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Hyperbyte, i'm interested in the quicker load without the splash answer also :)
I wonder if Xubuntu have it as an option.
!quiet-splash | echo andygraybeal
andygraybeal quiet-splash: to disable the splash screen in Ubuntu, in order to see any boot error messages, run `sudo gedit /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default` and remove quiet splash ..
Not sure if it's quicker load though... it *seemed* quicker, but that could just be imagination. Let me know what your experience is. :)
Hyperbyte, oh i mean you never got an answer as if it makes a difference on load time
ball, LTSP is included in default Ubuntu distributions
aah i don't want to do it unless i hear more :)
apt-get install ltsp-server I believe
Edubuntu just has it as option during installation, and sets up the entire server and client ready-to-go.
andygraybeal, you could just try it, see how it works. In the file above, there's two options 'splash' and 'quiet'. 'splash' enables/disabled the splash screen during boot, 'quiet' enables/disables debug messages
Easily remove, easily put back. :)
aah okay cool
To me it seemed faster, but it could just be that, because you're not staring at a white screen with "Ubuntu" on it, but rather some boot messages scrolling by, that it seems to go quicker
Or it could be because my thin clients have problems with setting the proper video mode during the splash screen and disabling it saves them time figuring out the video mode... I haven't looked into it that much yet, just experimented a little today. :)
I'm gonna sleep, g'night all. :)
night night :)
I didn't mind the Is it difficult to configure?
I walked away from the keyboard mid-thought there.
That's what happens when the office manager gets talking about air conditioning.
I should start reading some LTSP documentation from the sound of things.
The server has two Ethernet ports. I'll use one to connect to the Internet (via an existing LAN) and the other will be for the terminals.
How difficult is it to create an image for each terminal type?
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depends, are most of them i386?
|23:17||* ball nods|
Two types: one is a VIA EPIA M10000 "Nehemiah" board with 1 Gbyte RAM and Unichrome graphics, the other type is Compaq iPaq legacy-free.
(with probably 1M RAM, Intel graphics)
how would i make ltsp redundant?
Invent something better ;-)
I'm guessing you want fail-over though
...between different hosts, perhaps
what if i did ltsp-cluster
with 2 application servers
the goal is to provide lots of uptime
That's what I would like to do, eventually.
I have found it difficult getting straight answers about the practicality of that though, sadly.
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...and a consultant would cost more than the second server.
is it possible though?
andygraybeal: all are i386
TheMatrix3000, should be easy then :)
how would you make a redundant ltsp settup
is ltsp-cluster redundant?
TheMatrix3000, oh i thought you were responding to something eles
andygraybeal: Mine are all i386 too
(the terminals and the servers)
ball, that's who i was responding too
yea, i got it lol
why would you need different images for i386 boxes?
andygraybeal: Different graphics chips, processors etc?
TheMatrix3000, yea, some people in here have ltsp clusters :) i would love to have a fail-over machine too!
ball, graphics can be handled in lts.conf file
processors.. you mean like CPUs?
|23:58||* ball nods|
well.. what is the slowest CPU?
800 MHz Celeron Coppermine
these machines don't need to be very fast
...or, arguably VIA C3 at 1 GHz ;-)
celeron... omg. .. umm. my head stopped.. umm..
i bet you'd be just fine
i think you don't need different images for the setup.
are you planning on running as fat or thin clients?
Thin, just graphical terminals.
yea, you should be fine