[Pkg-hpijs-devel] Bug#630402: libhpmud0: Multi-function printers need their own group

[Karl O. Pinc]

Package: libhpmud0
Version: 3.10.6-2
Severity: normal

Hi,

Some (many? most?) multi-function usb printers, those that both scan
and print and perhaps do something else expose only a single usb
device.  Therefore when udev rules assign permissions to the device
based on function the alternate functionalities become unavailable.

Right now /lib/udev/rules.d/91-permissions.rules is assigning my
Seiko Epson Corp. Stylus CX3700/CX3800/DX3800 usb printer/scanner
to the lp group and thereby making the scanner unavailable to the
saned daemon for network based scanning.  I believe I would have the
same problem with /lib/udev/rules.d/40-hplip.rules.

I believe the right solution is to create a new group (say, an 'mfp'
group) for such multi-function devices and give the relavant daemons
membership in this group.  This is the only way I can see to avoid
conflicts.  The lameness of the hardware is not going to go away and
the current situation is clearly causing problems.  (See bugs #581254
and #529621.)

I will update this bug with bug numbers filed against the udev and
libhpmud0 packges.

-- System Information:
Debian Release: 6.0.1
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-5-686 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages libhpmud0 depends on:
ii  libc6                   2.11.2-10        Embedded GNU C Library: Shared lib
ii  libsnmp15               5.4.3~dfsg-2     SNMP (Simple Network Management Pr
ii  libssl0.9.8             0.9.8o-4squeeze1 SSL shared libraries
ii  libusb-0.1-4            2:0.1.12-16      userspace USB programming library

libhpmud0 recommends no packages.

libhpmud0 suggests no packages.

-- no debconf information