Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: CUPS setup / dev/lp0 perms. ... Slow printing.
Operating Systems Linux Slackware CUPS setup / dev/lp0 perms. ... Slow printing. Post 302278617 by agentrnge on Tuesday 20th of January 2009 05:02:58 PM
Old 01-20-2009
CUPS setup / dev/lp0 perms. ... Slow printing.
Hello,

Ive got an HP LaserJet 2100 / parallel interface.
I had some troubles getting going due to non-working cups drivers. Updated cups and also used a .ppd.gz file from something HP provided. found the files here...
http://www.linuxprinting.org/show_pr...-LaserJet_2100

Anyways. Printer was working fine with the new ppd driver. Sent a few test prints. 1200 dpi, all features working ok. (but slow) Then I rebooted. Note: this was a hard forced reboot to halt IO on a filesystem to run some undelete utils. Since then printer is not working. Re-traced my steps through the driver install / printer definition in cups.

cups errors report:
Unable to open device file "/dev/lp0": Permission denied

perms on lp0 should not have changed...

I just set them to 666.. restarted the spooler and it seems like it working.
inside /dev/
crw-rw-rw- 1 root lp 6, 0 2009-01-20 16:22 lp0

So CUPS and the printer is functional.
Now, why would perms have changed?
Is this the correct perms on lp0?
Should lp or cups be intercepting the print job anyway and the lp user sends the write to /dev/lp0 ?

System is slackware 12.2 kernel 2.6.27.7 cups 1.3.9
Last edited by agentrnge; 01-20-2009 at 07:19 PM.. Reason: removed mention of slow printing
 

10 More Discussions You Might Find Interesting

1. Linux

Landscape printing broken in CUPS?

Hello, I am using version: cups-config --version - 1.2.4 However, when i use the -o land or -o landscape command it doesn't print in Landscape. I have the same problem on another server. (Both running CENTOS). Does landscape printing work in CUPS? Is there a fix? Thanks in an... (0 Replies)
Discussion started by: stuaz
0 Replies

2. UNIX for Dummies Questions & Answers

Slow printing / CUPS - process "parallel" high cpu

Hello. I have a slackware system running cups with an HP laserJet 2100 connected via parallel port in ECP mode. Print jobs are working. Very slowly. 15K test print out of cups takes about 2 minutes to complete. When the printout is on the way to the printer, the process "parallel" uses... (0 Replies)
Discussion started by: agentrnge
0 Replies

3. SCO

Printing as a CUPS client, only root can print!

Hi, i'm running Openserver 5.0.7 as a CUPS client for a Linux server. The root user can issue a "lpstat -t" to see the printers and can submit jobs without issues. The problem presents when I try to work as a regular user. If I issue an "lpstat -t" all I get after a few seconds is "lpstat:... (1 Reply)
Discussion started by: cyruspy
1 Replies

4. Debian

CUPS Cannot recognize lp0

I am trying to print from Debian and receive the following message: "Unable to open device file"/dev/lp0": Permission Denied" The permissions for lp0 are 666. Advice and comments, please. :wall: Thanks (0 Replies)
Discussion started by: woofy613
0 Replies

5. AIX

Remote printing to Linux CUPS queue

Hello all. I am setting up a queue under AIX 4.2.1 to print to a remote Linux CUPS queue. At present I can print to the queue remotely from Windows but not AIX. What I am seeing is lpstat reads the state of the remote queue but at job submission time I am getting backend exit fatal errors. The... (4 Replies)
Discussion started by: tgx
4 Replies

6. UNIX for Advanced & Expert Users

CUPS printing and control escape codes

I ported application from SysV to Linux and run into troubles with printing. Application uses lp and HP JetDirect-based printers, it inserts HP control codes in the file and uses plain lp -d dest doc-file command to print it. The Linux (Ubuntu 8) has CUPS system, which I am not familiar... (0 Replies)
Discussion started by: migurus
0 Replies

7. UNIX for Advanced & Expert Users

Slow printing to network printers using CUPS

Hi Guys, I've inherited a mess of an infrastructure in my new job, there hasn't been a sys admin in post for about a year, so things are falling apart. The first thing to break after I started was the printer server. I have it working again, and people can print, however it's very slow, slower... (0 Replies)
Discussion started by: rudigarude
0 Replies

8. Red Hat

cups printing error

Hi All, Having searched for a solution to this issue i found no suggestions which help my particular problem. I am getting the following error message on 1 of the 3 printers i have configured: recoverable: Network host 'xxx.xxx.xxx.xxx' is busy; will retry in 30 seconds All 3 printers are... (0 Replies)
Discussion started by: Tommyk
0 Replies

9. UNIX for Advanced & Expert Users

Troubleshooting printing through Cups

Hello Experts, I have been facing an issue with printing through cups configured on Linux server. All was going on well but all of a sudden the printers started giving an error message, "Unsupported format application/postscript!" and we cant get any prints of any printer. Need your help as... (2 Replies)
Discussion started by: Rockyc3400
2 Replies

10. Shell Programming and Scripting

Automating partitioning setup of /dev/sda on /dev/sdc

Objective: To recreate the partitioning setup of /dev/sda on /dev/sdc How would I parse the below information and initialize variables (an array?) that can be used to build sgdisk commands in a script, regardless of the number of partitions? Something along the lines of: sgdisk -n... (12 Replies)
Discussion started by: RogerBaran
12 Replies

LEARN ABOUT MOJAVE

cups-deviced

cupsd-helper(8) 						    Apple Inc.							   cupsd-helper(8)

NAME

       cupsd-helper - cupsd helper programs

SYNOPSIS

       cups-deviced request-id limit user-id options
       cups-driverd cat ppd-name
       cups-driverd list request_id limit options
       cups-exec sandbox-profile [ -g group-id ] [ -n nice-value ] [ -u user-id ] /path/to/program argv0 ...  argvN

DESCRIPTION

       The  cupsd-helper programs perform long-running operations on behalf of the scheduler, cupsd(8).  The cups-deviced helper program runs each
       CUPS backend(7) with no arguments in order to discover the available printers.

       The cups-driverd helper program lists all available printer drivers, a subset of "matching" printer drivers, or a copy of a specific driver
       PPD file.

       The cups-exec helper program runs backends, filters, and other programs. On macOS these programs are run in a secure sandbox.

FILES

       The cups-driverd program looks for PPD and driver information files in the following directories:

	   /Library/Printers
	   /opt/share/ppd
	   /System/Library/Printers
	   /usr/local/share/ppd
	   /usr/share/cups/drv
	   /usr/share/cups/model
	   /usr/share/ppd

       PPD files can be compressed using the gzip(1) program or placed in compressed tar(1) archives to further reduce their size.

       Driver information files must conform to the format defined in ppdcfile(5).

SEE ALSO

       backend(7), cups(1), cupsd(8), cupsd.conf(5), filter(7), ppdcfile(5), CUPS Online Help (http://localhost:631/help)

COPYRIGHT

       Copyright (C) 2007-2017 by Apple Inc.

15 April 2014							       CUPS							   cupsd-helper(8)
All times are GMT -4. The time now is 12:19 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy