Printers
The institute has a number of network printers available, which can be controlled through the central CUPS print server lxtssp1. There are also local printers, but they are often assigned to a computer and only accessible via these computers.
To call up the local print jobs, the selected desktop environment (KDE, GNOME, etc.) generally offers a tool. All print jobs can be displayed on the command line with 'lpq -a'.
There is a small program (shell script) available, which lists the status of the printer queues. It's named lpq-all (The complete pathway is /usr/local/bin/lpq-all). The status is refreshed in a (currently) 30 second cycle with the the "-loop" option. The readout only happens once without this option.
Tips for Printer Problems
It is possible that the CUPS freezes, so that no other print jobs can be processed. Generally, this means the printer server lost the connection to the printer and is waiting for activation from it. A script was installed, which enables or triggers the printer queue every thirty minutes. If a printer does not react for longer than 30 minutes, the system administrator must step in.
Using a printer from a Laptop
The public printers can only be used via the print queues the man CUPS print server lxtssp1 (IP 134.61.10.8).
If the systems do not independently find the CUPS servers, the following (printer) connection should be entered for Linux and Max OSx for the expression on lpthp1
ipp://lxtssp1.physik.rwth-aachen.de:631/printers/lpthp1
for Windows (under network printer)
http://xtssp1.physik.rwth-aachen.de:631/printers/lpthp1
and, if necessary, the appropriate driver selected. If you want to select a differnt printer, replace t lpthp1 with the name of the respective queue.
The printer lpthp4c is operated via the print server lxtspr3 (134.61.10.9).
Recent versions of Mac OS X require to enter the information on the printer queue separated into protocol (ipp), server (lxtssp1.physik.rwth-aachen.de, 134.61.10.8) and queue (printers/lpthp1)!
Drivers for the printers from Triumph-Adler can be downloaded from https://www.triumph-adler.de/ta-de-de/support/downloads .
The following list provides an overview of the printers and links to the CUPS status page of the printers, where possible. That page also provides additional information about the printer and current print jobs:
|
Name |
Model |
Room |
Installed on |
Admin |
|---|---|---|---|---|
|
HP LaserJet P4015x |
28A404 |
Printserver |
||
|
HP LaserJet P4015x |
28A404 |
Printserver |
||
|
Color LaserJet CP5225dn (Duplex) |
28A404 |
Printserver |
|
|
|
Triumph-Adler P-4026iw MFP |
26A409 |
Printserver |
||
|
Color LaserJet M452dn |
26A409 |
Printserver |
||
|
lptpa8-dc |
HP Color LaserJet CP3525dn (Duplex, Farbe) |
26A302 |
- |
|
|
Triumph-Adler P-C2655w MFP (Colour but b/w as default) |
MBP2 1st floor |
Printserver |
||
|
lptpc1 |
Triumph-Adler 5006ci |
26A405 |
- |
|
| Triumph-Adler P-4026iw MFP |
MPB2 1st floor |
Printserver |
||
| lptpc4 | Color LaserJet CP3025 | 26A404 | lxtc204 | Status |
|
lptpe1 |
Triumph-Adler P-C2655w MFP |
28A411 |
- |
|
|
Triumph-Adler 5056i |
MBP1 1st floor |
Printserver |