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Hi. I struggle to get a locally connected USB printer to work on a fat client. Any hints where to start?
It doesn't show up in CUPS on the localhost without adding it. Nor is it listed in the printer configuration of the system settings
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re my printer problem: I put CUPS_SERVER=localhost in my lts.conf. On the client, this resulted in a client.conf containing 'ServerName ::1'.
Looks like something did a reverse DNS resolve using IPv6, which caused an issue with my CUPS server on the fat client. I changed it to 'CUPS_SERVER=127.0.0.1' in lts.conf and now it works
ltsp hasn't been well tested with ipv6...
I never intended to use it. But my "localhost" was resolved to "::1"
are you using the ltsp ppa, or packages from 16.04?
I do not know about 'ppa', but I do know about these similar topics: 'sbalneav-ppa', 'greek-schools-ppa'
!greek-schools-ppa | echo fzimper
fzimper greek-schools-ppa: https://launchpad.net/~ts.sch.gr/+archive/ppa/ supports LTS Ubuntu releases with newer LTSP versions, bug fixes etc
I use the ppa
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fzimper: in general, you forward the printers to the server via jetpipe, and install them on the server, using the default CUPS_SERVER=server
jetpipe: (#1) Jetpipe -script has founded to be unstable in some cases. You can try C written (but limited) Jetpipe from GitHub https://github.com/bilange/jetpipe or switch it to USB/IP and use these scripts http://pastebin.com/Ltdi2TCL Support AIO devices as well., or (#2) jetpipe has a bug in some Ubuntu versions, to manually start it, put something like this in lts.conf: RCFILE_01="/usr/sbin/jetpipe /dev/usb/lp0 9100 &"
printer: Quick how-to: RCFILE_01="/usr/sbin/jetpipe /dev/usb/lp0 9100 &" in lts.conf, reboot client, then go to server's add printer dialog, and specify network printer → jetdirect → ltsp123.local
I do not know about 'printers', but I do know about these similar topics: 'fatclient-printers'
fatclient-printers: You can publish printers on your network so that fat clients see them, by launching "system-config-printer" and selecting Server → Settings → Publish shared printers connected to this system
Yes, that's what we had used. But as the printer in our computer lab only has a USB port, I connected it to a raspberry pi. So if a user prints from a PC, the file is first printed to CUPS on the server and from there it ges to CUPS on the raspberry pi which then prints it via USB
And that is quite slow for big files. Never been a problem for me but one of my colleagues was complaining because he often wants to print some graphic-heavy documents "quickly" before heading to the next lesson. "And that was possible before when we had Windows" - Obviously that was not quicker because of Windows, but because the printer was connected locally.
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How do I grant users access (rw) to the local HD?
fzimper: "from there it ges to CUPS on the raspberry pi " ==> in what I described, cups isn't used at all on the fat clients
I do not know about 'local', but I do know about these similar topics: 'install-localapp', 'localdev', 'RDP-localdev', 'LocaldevCommonGroupWorkaround', 'localxterm', 'local-disks', 'local-boot', 'localapps'
local-disks: On fat clients, only sudoers have access to local disks. One way to give access to non sudoers, is to put in lts.conf: RCFILE_01="mkdir -p /media/local_disk && mount /dev/sda1 /media/local_disk"
alkisg, thanks. I am using fat clients
DO I still need LOCALDEV=true and LOCALDEV_DENY_INTERNAL_DISKS = false ?
alkisg: Yep, CUPS is not used on the fat client. But on the server and on the pi.
JuJUBee: no, only the RCFILE_01 that I pasted is needed
fzimper: the pi is a fat client and cups isn't used there as I described
Will that dir persist?
JuJUBee: that dir is a mount point created dynamically on boot. The content will persist as it's local storage, the mount point will be recreated on next boot.
thanks, that is what I meant. Great
No. The fat client is a standard PC which prints to CUPS on the LTSP server. The printer is connected to the rasperry pi and configured as a network printer on the LTSP server
The pi just acts as a print server in that case.
fzimper: in ltsp terminology, "fat client" is a diskless client netbooted from the ltsp server
That's what pi is
So, pi is a fat client
Then, pi is supposed to be running jetpipe to forward the usb printer to the server
No cups involved at all
And the Pi is booted from its very own SD card. It's been there already when I installed the LTSP network
If pi is a standalone client and not a pi client, then you could use jetpipe the same way there, if you wanted to speed up things
*not an ltsp client
Ok, never head of jetpipe. Will have a look at that
It's the standard printing method for ltsp, since 10 years or so...
Also, sd cards wear out after a while, so if you already have an ltsp server, you could use it to netboot the pi... if it suits your use case that is
Understood. But currently it's not worth the effort for me. I have a recent backup of the SD card and can quickly restore it if need be.
So is this still current and also valid for fat clients (or standalone devices such as the pi)? http://wiki.ltsp.org/wiki/Tips_and_Tricks/Devices#Printer
Eh, it is, although the factoids I used above ^ are better
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Does anybody know any ltsp repo for latest fedora (>24)?
fedora hasn't had anyone working on it for quite some time, unfortunately
main actively supported distros at this point are Debian and Ubuntu
and even that could use some work...
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BillLong: bcg has been working on fedora versions, maybe he has some packages to share...
oh, didn't know about bcg
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alkisg: I will check it out
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