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Operating Systems Linux Slackware CUPS setup / dev/lp0 perms. ... Slow printing. Post 302278627 by agentrnge on Tuesday 20th of January 2009 06:13:22 PM
Old 01-20-2009
Upon each bootup /dev/lp0 is getting created with permissions to allow root and group lp rw access.

The printer shows unavailable. print jobs error out saying "unable to write to /dev/lp0"

cupsd is running as root
parallel is running as lp

As soon as I add +rw to all users it is fine. This does not feel like the correct "solution".
 

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FOOMATIC-GETPJLOPTIONS(8)				      System Manager's Manual					 FOOMATIC-GETPJLOPTIONS(8)

NAME
foomatic-getpjloptions - <put a short description here> SYNOPSIS
foomatic-getpjloptions device foomatic-getpjloptions hostname port DESCRIPTION
foomatic-getpjloptions Sends a set of PJL commands and reads back the PJL options and status from a printer over a network connection or device bidirectional interface such as parallel, USB, serial. printers to standard output. The output can be piped into foomatic-addpjlop- tions to add options to the database. Options device The interface to which a local printer is connected, e.g. /dev/lp0, /dev/usb/lp0, /dev/tty00, etc. For a parallel port, you must have bidirectional support enabled at the BIOS level and the parallel port driver must support the bidirectional mode. Check your parallel port BIOS settings for EPP/bi-directional mode. hostname Host name or IP address of a network printer (HP JetDirect, DLINK, etc.). port Port on which your network printer listens for socket (Appsocket) connections. Most common ports are 9100 (JetDirect), 10000 (DLINK). Usually you can configure the port via a configuration interface. EXIT STATUS
foomatic-getpjloptions returns ??? AUTHOR
Manfred Wassmann <manolo@NCC-1701.B.Shuttle.de> for the foomatic project using output from the associated binary. Modified by Patrick Pow- ell <papowell at lprng.com> to provide betters support for network printers, error messages, and remove CR and FF from output. WARNINGS
Uni-directional protocols as remote LPD are not supported as no status is returned. Some network print servers which attach to a printer parallel port do not support bidirectional mode. Foomatic Project 2001-05-07 FOOMATIC-GETPJLOPTIONS(8)
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