[K12OSN] terminal printers
jam at mcquil.com
Tue Jun 14 19:47:20 UTC 2005
/dev/usb/lp0 should be the correct device name for the usb printers.
if you /dev/usb is empty, i'm guessing that you need a kernel module
Get to a bash prompt on the terminal, and run lsmod, and see
if you have any usb modules loaded.
For the thinknic, I don't remember if you need uhci or ohci. Almost
certainly it's not ehci (that's for usb-2.0).
The modules should get loaded automatically during bootup, if a printer
What kernel are you running? the latest ltsp kernel should be
2.4.26-ltsp-3. You shouldn't be using the 2.6.9 kernel yet. there's
still some module issues with it for usb. (They've changed some of the
On Tue, 14 Jun 2005, Julius Szelagiewicz wrote:
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> > On Tue, 14 Jun 2005, Julius Szelagiewicz wrote:
> >> On Tue, 14 Jun 2005, Sudev Barar wrote:
> >> > On Mon, 2005-06-13 at 22:00, Julius Szelagiewicz wrote:
> >> > Sudev Barar
> >> Sudev, we have a misunderstanding here. This are the printers that
> >> worked
> >> fine before the upgrade, they don't work now. The queues get created
> >> correctly, but no printing occurs.
> > Seems like some simple troubleshooting is in order here.
> > Can you telnet to port 9100 on the client and start typing?
> > Hit Ctrl-L, and it should eject the page.
> > If the connection is refused, then the lp_server daemon probably isn't
> > running. In that case, maybe it's not loading the kernel modules
> > required for the printer.
> > What type of interface does the printer have? (Serial/Parallel/USB)
> > Can you send us a copy of your lts.conf file?
> > Printing on printers connected to LTSP-4.1.1 terminals DOES work. I've
> > seen it with my own eyes. If it's not working for you, i'm pretty sure
> > we can get it figured out.
> > Jim McQuillan
> > jam at Ltsp.org
> troubleshooting definitely, and I do hope it is simple :-)
> The station I'm testing with is a Thinknic with usb printers.
> this is the lts.conf entry. (the printers where defined as /dev/usb/lp0
> and lp1, /dev/usb is now empty.
> changed devices to tty0 and tty1 to see if the queues will get created
> correctly. now i can telnet into the ports 9100 and 9101 with the
> connection staying on.
> XSERVER = vesa
> # PRINTER_0_DEVICE = /dev/usb/lp0
> PRINTER_0_DEVICE = /dev/vc/0
> PRINTER_0_TYPE = S
> # PRINTER_1_DEVICE = /dev/usb/lp1
> PRINTER_1_DEVICE = /dev/vc/1
> PRINTER_1_TYPE = S
> SCREEN_01 = startx
> SCREEN_02 = shell
> What are the devices for usb printers?
> This is what the manual says:
> "9.2.6. Printer configuration parameters
> Upto three printers can be connected to a diskless workstation. A
> combination of serial and parallel printers can be configured via the
> following entries in the lts.conf file:
> The device name of the first printer. Names such as /dev/lp0, /dev/ttyS0
> or /dev/ttyS1 are allowed."
> Fine as far as it goes, but what happened to /dev/usb/lp(x) devices?
> thank you, julius
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