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muppis, several weeks back you tried to help me figure out what prevented me from connecting a USB printer to a LTSP client
Unfortunately you had to give up because your virtual test env was not avail. that day
maybe time to give it another try?
Henning, well.. I can't access *that* test env right now, but I'm fixing my home one now, so I can give a try.
the last time you recommended to check whether there was anything listening on port 9100 - there isn't
is it of any importance that my env (besides the client of course) is a VM too?
I think that little piece of software need that actual printer to keep running. Had that same problem with my customer and it was permission problems in lts.conf at server side.
Somehow oddly those has changed so tfpd couldn't read the file and thus client didn't load it.
in that case none of the directives defined there should be pulled right?
that's not the case as language settings and so on are applied to the client
So, if you have root access at the client where printer is attached, you can try run application named jetpipe.
permissions are: -rw-r--r-- 1 root root 560 2011-03-14 12:00 /var/lib/tftpboot/ltsp/i386/lts.conf
open a root shell on the ltsp client box? And issue what command to start jetpipe? Is it a service?
Syntax is: jetpipe /dev/lp0 9100
Probably /dev/usblp0 or /dev/usb/lp0 works better.. ;)
You can then check with netstat -tanp | grep 9100 if it works. jetpipe is python script, so port is listened by python.
All right puzzled now. Executing what you recommended leads to: "The programm jetpipe is currently not installed... You can install it by.... apt-get install ltp-client-core
So I assume I do have to install that on the lstp server machine, right?
You should have it in client, not in server.
So this needs to be installed in the client's chroot?
Yes, but I think you can't have running client without it already installed. :)
that's strange then because the client is up and running right now
Go to chroot and run: which jetpipe
If it gives /usr/sbin/jetpipe, you're good to go.
If you haven't done this, put screen_02=shell to lts.conf, so you get root shell at client easily. It can be found with ctrl+alt+F2 after reboot.
In chroot, command which jetpipe gives /usr/sbin/jetpipe - but then the message about ltsp-client-core message missing is wrong, isn't it?
It depends. If it gives that error at server, not in chroot, then it's right. If it gives in chroot, try: dpkg -S /usr/sbin/jetpipe
It should give this: ltsp-client-core: /usr/sbin/jetpipe
Ok, rebooted the client with screen_02=shell, which drops me right into that shell with root permissions, No GUI anymore, Guess I have to add SCREEN_07=ldm in addition to the shell
Yes. Sorry, forgot to mention that.
No big thing, Running the jetpipe command succeeded, Just opened syslog, attached the printer and guess what - lots of output and add the end "USB Bidirectional printer...."
Give me a sec to reboot the client with shell, and GUI
If you can get jetpipe running and working manually, then problem is in lts.conf or getting settings from it. Try getltscfg -a at client and see does it give same values as defined in lts.conf.
The funny thing after the reboot: Jetpipe's listening directly after the reboot without doing anything. The only thing I did never try beforehand was connecting the printer while booting
I always connected the printer once the lstp client was up to see exactly what's going on by monitoring the syslog
So I guess the only thing learned from that is to connect printer while booting, hmm? :-)
lts.conf is read and processed during startup, so if /dev/usblp0 doesn't found at that time, jetpipe fails to start.
Now "the only" thing is to get the printer to work which has always been some trouble on a standalone hardware machine....
Do you by any chance know whether it is possible to use the scanner function of a multi functional device connected to an ltsp client or do I not even have to bother trying?
any experience with that?
Hmm, do I remember it right that I have to add the device as HP Jet direct now?
Yes, and with client's IP.
You should make it fixed in dhcpd.conf to avoid futher problems.
Ok, will do so. Thanks,
One more question about the driver to use
Do you use a generic HP driver for your printers?
Asking because the printer is connected now via HP JetPipe but the printer actually is a Samsung printer....
I use model specific if possible to ensure proper functioning.
Even the script is called as jetpipe, it is just redirecter for CUPS and uses same port as actual JetPipe.
Ok - thanks for the info! Guess I felt lucky to soon?
You never know.
Even though the printer driver was listed (SCX-4200) printing a test page does not work...
Device URI is listed as socket://<IP-ADDRESS>:9100
Any other idea for further trouble shooting?
Can CUPS obtain any status information from printer?
Well, on the first tab of the printer settings it says: "Printer state: Idle - Ready to print"
How about Ink/Toner Levels -tab?
Just states "There are no status messages for this printer"
Turning off printer, Rebooting client - Always those desperate last tries :)
Grrr - no luck
When I print the test page the message "Idle - ready to print" changes to "Processing page" and the back to the idle message but the darn printer just sits there doing nothing....
any more trouble shooting ideas?
RUn first in terminal: watch "netstat -tanp | grep :9100" and then try printing.
There you see is it even trying to connect to client.
Changes from listen to established and then back to listen....
At client side?
did this on the terminal activated earlier on....
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Ok. Trying to figure what next.
Is possible to try does that printer work at all?
The printer works fine using a local install of Ubuntu on the same machine used as ltsp client right now
It's only a total bitch to set up
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When you google for Samsung scx-4200 "Ubuntu" you find quite a bunch of people having issues getting the printer to work
Guess from now on - as the printer is connected - it's time to work through all those posts.... :-(
Anyhow - Thanks a lot for you patience and help - Got a big step further ahead!
I was suggesting to do so.
No problem at all.
All right then, Thanks to everyone of the LTSP team to create and maintain this really great piece of software!
Have a good weekend folks!
Same to you.
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Hello, i'm using LTSP in edubuntu 10.4 and when i start up the thin station it connects but i get no login screen. all i get it a white screen and a mouse pointer.I get a ltsp 20 with the clients ip address but nothing else.. can anyone help me with this.. Thanks
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