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hey guys, i can't seem to find good instructions for getting printers connected to thin clients working properly, any tips?
xerox 3117 (works great if connected to server) on ubuntu 10.04
never mind, i remembered how to do it
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was someone asking about neatx and greek or russian keyboard layouts?
it works for me to switch layouts and both English and Russia work with neatx connecting from the NX client for linux
jimjimovich: without doing anything? nomachine nx client + neatx-server?
yup, just works
I had to file this one: http://code.google.com/p/neatx/issues/detail?id=65
...and run `setxkbmap` on every connection...
interestingly enough, it even works when the keyboards are are mixed up (like, my local machine is set to RU but the remote is set to EN, it still types remotely in English)
is it a problem with typing or is it a problem that the greek keyboard has more keys or something?
I can't type letters like those with the us layout: Καλημέρα
So I have to switch (with alt+shift) to greek layout
yeah, same for Russian
And without the setkxbmap workaround, neatx-server doen'st allow me to switch layouts...
I didn't configure anything at all. Just installed neatx from the ppa on 10.04
Cool, maybe something is missing for the greek keyboard then
I'll try to test with russian kbd when I have some time
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by the way, you were absolutely right yesterday about the flash problem
I'm absolutely LOVING ltsp on Ubuntu 10.04
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I got nfs related problem on fat clients. Homedirs are shared via nfs and loading gnome everything graphical stops respondig or responds extremely slow.
Is statd running on the server?
Even failsafe gnome hangs.
Had earlier issues with that and got fixed, or it doesn't repor any errors anymore.
|05:43||* alkisg stopped having nfs problems when he started using NFS_HOME_OPTIONS=defaults,nolock :) But other than the statd problem and that workaround, no idea about nfs...|
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I think we had to but nolock also to mount options.
Not but but put.
anyone got some pointers for using scanners on thin clients?
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jimjimovich, i sidestep the issue by using network scanner,
sep: like actual network scanner hardware or sane network scanning?
harware network scanner
sep: must be nice :)
wow, i actually just got it working (with one scanner connected to a thin client). sweet!
sep: are those network scanners expensive?
depends. some of the copyiner/printer/scanner/fax with stampler holes and booklet machines can be. a simple scanner with nic is not so expencive
sep: that sounds really cool
although, after like an hour of googling and digging through old docs, i see that scanning is actually pretty easy with any old scanner that SANE supports
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on ubuntu lucid, i'm getting a 'restart required' pop-up box, seems inappropriate since the client can't reboot the server. ideas?
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think that can be disabled
Appiah: will look, thanks
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anyone have experience with udhcpc ?
i have a atom tc with alt1c netowrk , have sorted loading module and getting ip during initial boot, but during premount it stops and i just keep getting
udhcpc: Received DHCP NAK
udhcpc: Sending discover...
udhcpc: Sending select for...
I saw a post on irc from highvoltage sayinh he had same problem but he/she didnt expand on solution
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i've a question about xterm session
i'm trying to just start a local app into the device
i tryed doing a xterm -e cmd
also modifying the xterm -ls and putting the same command into .login file
still no way :(
|11:53||* Kyle__ sighs|
I just had a student blame my computers/me for not being able to log into her yahoo mail.
The labs would be so much nicer without students.
methril_work: Is the issue that it's not starting as a localapp, or that it's not starting when the user logs in?
it's not starting when the user logs in
if you put the command in the xterm session
If it's gnome, there's a directory you put ascript in, I think.
What about in a .xession?
does not work, neither .xinit
it's not gnome, i don't need a wm for this particular case
i try to create a new session (/usr/share/xsessions)
methril_work: I've got special sessions in /usr/share/xesssions. They work pretty well for me. Are they not running?
Kyle__, they are not
maybe is some bad arg to xterm command
in hte Exec param
i'll try xterm -e shell_script_that_use_the_localapp.sh
it works with a xterm session
methril_work: pastebin one of your sessions, and the script it calls.
|12:07||* Kyle__ grumbles at firefox for being such a slow pig today.|
methril_work: Why are you running that in an xterm?
Kyle__, because i need X, (a graphic interface, but not wm
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methril_work: LDM/GDM/*DM will still launch X, even with out specifying to run that in an xterm.
uhm... let me try
That's one from mine that's used daily.
is this the same as using LDM_SESSION session var at lts.conf?
methril_work: You can specify one of those sessions in LDM_SESSION, but doing that forces that to be the default.
well if i want it for a specific machine, i could do it for that machine
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methril_work: I dunno. I've never tried it for just one machine or another.
well, it does not work as xsession, neither LDM_SESSION param :(
i don't know what could be wrong
hi, i have 2 servers with 4G ram each, can one server manage 20 sessions or should i use both servers as a cluster to get enough power to serve those sessions?
Mobe: Depends on what the clients are doing, what cpus are in the servers, etc.
dean_za: I think you're confusing me with someone else, I don't recall blogging about a dhcp problem :)
clients will be all using mostly xchat and firefox for 24 hours on JOTA-JOTI weekend
servers have dualcore intels
one brand new desktop and another about 6 months old desktop
Mobe: I'm gonna guess that you could get away with one server, unless they all run a ton of tabs at once.
But that's me, other people may have a different opinon.
highvoltage - not blogging it was an irc log
Dean_: ah ok, must be from quite some time ago then
last year I had older cpu and server was also routing traffic for 20 windows desktops, throttling badly in times
now there will be separate server for routing different networks
you made it seem like it was somehting simple / stupid ?
Mobe: If you're worried, cluster them then. You should always be able to scale back down to one if you don't need all of it.
Weird weird weird. I'm getting an error on not finding locale-gen when trying to install a debian chroot
Is there something special you need in the ltsp-build-client.conf that I'm missing?
highvoltage: any chance you remeber ?
yes, i have the hardware and personal interest on testing the cluster but lazyness makes me ask these...
Mobe: Well, if this is a work situation, I'd cluster, or even manually partition, because I would _not_ want to give the project a black-eye due to performance reasons.
if clustering, is the root server part of primary appserver or separate hardware
one weekend of use for local scout group, knowledge gain will help mee on my job
if root is separate does it need much cpu and memory or is the work done in app servers
Dean_: according to those logs, I figured it out, but to be honest I can't even remember having the problem (*crunching*)
Dean_: does your thin client have 2 active network cards perhaps?
|12:53||* Kyle__ has never done a cluster in LTSP, so can't really help there.|
it has an atheros chipset alt1c for ether and ath9k for wifi , i had to manually insert alt1c in modules to be loaded to get past initial kernel panic , how can I prevent a module from being loaded so that i can disable the wifi
thanks for this Kyle__ , will wait for other opinions too
Anyone awake know the ins-and-outs of the ltsp-build-client script?
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does anybody having problem with defunc process of udhcp on thin client ?
It's ending with "chroot: cannot run command `locale-gen': No such file or directory". Which is weird, since the only reference I can find to locale-gen is in a conditional in /usr/share/ltsp/plugins/ltsp-build-client/Debian/025-locales, and there it's in a conditional...that should keep it from being run.
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alkisg, did you saw this with your udchp script, i don't have the issue on lucid but i have it on maverick
mgariepy: what problem exactly?
every 2 minutes or so, i have a defunct udhcp process on my thin client
No idea about that... stgraber wrote the reloading part
do you use the script on a setup somewhere ?
I only use the ipappend 3 part, i.e. I don't have udhcp running after it obtains an ip
There were some changes and it wasn't working on my setups because of the cisco routers we're using
...so I had to stop using it
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ltsp-build-client calling locale-gen even when the script says it shouldn't?
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Kyle__: what locale do you have on your server?
(didn't see all of what you said, but I had a similar problem with the greek el_GR.UTF-8 vs el_GR.utf8 locale)
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alkisg: The server? I think it's the default...but maybe I set it to utf8...
Kyle__: echo $LANG
It shows up C.
|14:18||* Kyle__ frowns.|
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I suppose this is part of linux I'm unfamiliar with.
Kyle__: use the --locale option of ltsp-build-client, and set it to en_US.UTF-8 or anything other you want, but take care that the extension is UTF-8 and not utf8
alkisg: K, I'll give that a shot in a sec... a class is running now so I don't want to do _too_ much at once.
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alkisg: Nope, still dying in the same place.
alkisg: The weird thing is that it should never run locale-gen to my knowledge.
Kyle__: how did you invoke ltsp-build-client?
ltsp-build-client --arch i386 --chroot debian --dist lenny --fat-client-desktop --config /etc/ltsp/ltsp-build-client-debian.conf --locale en_US.UTF-8 --mirror http://ftp.usb.debian.org/debian/
Ah, lenny, no idea there
Erm, is fat-client-desktop supported with lenny?
|14:35||* Kyle__ shrugs|
I have no idea. I was going to try.
I'm hoping it will be slightly more stable than ubuntu.
I think vagrantc did some tests *after* lucid was released, and it was semi-working
Nah, I think fat clients are more stable in ubuntu atm
alkisg: I'm having kernel issues unfortunately.
Use another kernel :)
It's much easier....
alkisg: Trying :)
I was having weird initrd issues. But I'll try again.
What's your kernel problem btw?
alkisg: I think it's due to the intel chipset.
alkisg: But in a nutshell, it's locking up with "XYZ blocked for 120 seconds"
alkisg: At which point current processes will run (a little slowly) and _no_ new processes can be launched.
Just pulled from syslog, "INFO: task apt-key:1580 blocked for more than 120 seconds."
It will happen with almost any binary. bash, ldminfod, expr, popularity-contest.
Sounds like an nfs problem...
or an nbd problem
alkisg: I don't think it's an NFS problem. It can happen on a box before NFS is ever used.
NBD problem, I dunno. I don't _think_ so, but I'm not sure.
Can you try disabling nbd-proxy?
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alkisg: I can try. This class is over pretty soon, I'll turn it off when it's over.
See there for a how to: https://bugs.launchpad.net/ltsp/+bug/589034
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alkisg: Is the patch the only way to disable the nbd-proxy? What happens if I just turn that off on the server?
It's a client process
alkisg: What about just turning it off on the client? Could that be done without altering the image?
No. But the image doesn't need updating; only ltsp-update-kernels is needed
Oh I see.
OK. LIke I said, I'll wait till after class to update... but I'll try that.
update ltsp_nbd, call chroot update-initramfs -u, then ltsp-update-kernels.
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Scanner support is already bundled with LTSP?
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It uses saned, right? How do I activate it in lts.conf?
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I have an Epson TX125, printing is working great, but what's the best way to add scanning support?
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Is there any way to manage a fat client's software from that client?
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it's stored on a read only image
OK, running without the proxy for about an hour now. No problems yet, but I'll wait to see how it goes after a full day's use.
johnny: jconlon: you _can_ add new software on the client. All the changes will be stored in ram, and lost on reboot. That makes it a decent way to test the interaction of new packages, as long as you have enough ram.
|16:41||* Kyle__ actually just did that with eclipse today: had to make sure it wouldn't insist on a different version of java, or something that would screw up the java-apps my labs require.|
that's not the same thing as managing
you can't delete
adding is one thing, deleting and upgrading isanother
manage to mean, means all of those things
johnny: It's not permanant, but it's enough for testing. If that's what he needed.
i doubt it was just for testing
johnny: I never did test removing a package.
|16:42||* Kyle__ nods|
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!learn xauthority as to access the client X session from a local root shell, try: eval $(tr '\0' '\n' < /proc/$(pidof -s ldm gdm-simple-greeter gnome-session | cut -d' ' -f1)/environ | egrep '^DISPLAY=|^XAUTHORITY=') && export DISPLAY XAUTHORITY
alkisg: The operation succeeded.
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Humm. OK, everything seems to be working. What on earth would cause nbd-proxy to cause such an issue?
|17:56||* Kyle__ blinks|
alksig left almost an hour ago...didn't he.
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didn't want to leave you hanging, thinking this wasn't a friendly place
by the way, we should get ltsp into gsoc next year
just need someone to manage it
i already do that for 2 other projects, wouldn't mind adding a third
besides, i should do something around here besides occasionally pop my head in
all we need is a list of project ideas and potential mentors, and i can handle the rest
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dberkholz: well... next spring, when google announces it, we should do something
the time to start collecting projects is now
if you've got any, start up a wiki page
k. We'll talk about it at bts in a couple weeks
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