Martin, In http://bugs.debian.org/298064 you supplied a patch, used in ubuntu, to enable hpoj to run as non-root, which has been applied to the Debian hpoj-0.91-5. While it does take care of the magic for usb printers, it doesn't seem to do the same for parallel printers.
This is a bit of a problem as while hpoj does support usb printers and running as non root is good, however hplip also supports and is preferred for usb printers. However hpoj also supports parallel printers and hplip doesn't. I see the problem is reported to ubuntu as well http://bugzilla.ubuntu.com/show_bug.cgi?id=11821. I couldn't find an easy way to link the ubuntu& debian bugs which is annoying :-( It would appear that the generated user hpojlp isn't a member of the lp group and thus doesn't have permission to access the parallel port. Looks like something funny is happening in debian/postint with the --ingroup call. I have fixed in hpoj-0.91-6 with an explicit call to add hpojlp to the lp group. Mark ---------- Forwarded Message ---------- Subject: Bug#303260: hpoj: Found "printer" but failed to communicate with it! Date: Tuesday 05 April 2005 17:58 From: "J.L. Fernandez Jambrina" <[EMAIL PROTECTED]> To: Debian Bug Tracking System <[EMAIL PROTECTED]> Package: hpoj Version: 0.91-4 Severity: important ptal-init setup command is unable to comunicate with parallel printers. I tried it with two printers (an "DESKJET 1120C" and an "HP Laserjet 4100"), two computers and two cables. This is the output of ptal-init setup: Probe parallel port "-base 0x378 -basehigh 0x778 -device /dev/lp0" (y/[n])? y *** Found "DESKJET 1120C" but failed to communicate with it! *** Elapsed time for this attempt was 1 second(s). *** Check syslog file for ptal-mlcd error messages. *** See hpoj documentation for troubleshooting information. I am able to print to the printer through the pararalel backend provided by cupsys. The content of /proc/sys/dev/parport/parport0/modes is PCSPP,TRISTATE,COMPAT,ECP,DMA The content of /proc/sys/dev/parport/parport0/base-addr is 888 1912 translated to hexadecimal gives 0x378 0x778 The output in /var/log/syslog is Apr 5 18:52:15 xuxa ptal-mlcd: SYSLOG at ExMgr.cpp:3512, dev=<mlc:par:probe>, pid=4521, e=2, t=1112719935 Apr 5 18:52:15 xuxa ptal-mlcd: SYSLOG at ExMgr.cpp:652, dev=<mlc:par:probe>, pid=4522, e=2, t=1112719935 Apr 5 18:52:15 xuxa kernel: lp0: ECP mode Apr 5 18:52:15 xuxa ptal-mlcd: ERROR at /var/lib/mythtv/mnt/home/msp/src/debian/hpoj/hpoj-0.91/mlcd/ParPort.h:782Apr 5 18:52:16 xuxa ptal-mlcd: ERROR at /var/lib/mythtv/mnt/home/msp/src/debian/hpoj/hpoj-0.91/mlcd/ParPort.h:641Apr 5 18:52:16 xuxa ptal-mlcd: ERROR at ExMgr.cpp:3606, dev=<mlc:par:probe@/dev/lp0>, pid=4522, e=25, t=111271993Apr 5 18:52:16 xuxa ptal-mlcd: ERROR at ExMgr.cpp:2559, dev=<mlc:par:probe@/dev/lp0>, pid=4522, e=25, t=111271993A José, -- System Information: Debian Release: 3.1 APT prefers testing APT policy: (500, 'testing') Architecture: i386 (i686) Kernel: Linux 2.6.8-2-686 Locale: LANG=es_ES, LC_CTYPE=es_ES (charmap=ISO-8859-1) Versions of packages hpoj depends on: ii libc6 2.3.2.ds1-20 GNU C Library: Shared libraries an ii libgcc1 1:3.4.3-12 GCC support library ii libsnmp5 5.1.2-6.1 NET SNMP (Simple Network Managemen ii libstdc++5 1:3.3.5-8 The GNU Standard C++ Library v3 ii libusb-0.1-4 2:0.1.10a-6 userspace USB programming library -- no debconf information -------------------------------------------------------
