** Changed in: libmtp (Debian)
Status: Unknown => Fix Released
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https://bugs.launchpad.net/bugs/1863239
Title:
/dev/bus/usb/*/* device file of HP multi-function
This bug was fixed in the package libmtp - 1.1.17-2ubuntu1
---
libmtp (1.1.17-2ubuntu1) focal; urgency=medium
* In 69-libmtp.rules skip all printers, including some weird ones from HP
as some test positive on mtp-probe (LP: #1863239).
-- Till Kamppeter Sat, 21 Mar 2020
** No longer affects: pulseaudio (Ubuntu)
** No longer affects: systemd (Ubuntu)
** No longer affects: udev (Ubuntu)
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Title:
Also reported to Debian
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=954885
** Bug watch added: Debian Bug tracker #954885
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=954885
** Also affects: libmtp (Debian) via
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=954885
Attached debdiff fixes this bug in the libmtp package, applying
effectively the patch of the previous comment.
** Patch added: "libmtp_1.1.17-2_1.1.17-2ubuntu1.debdiff"
Correction for the patch, please use this one.
** Patch added: "69-libmtp.rules.patch"
https://bugs.launchpad.net/ubuntu/+source/udev/+bug/1863239/+attachment/5339060/+files/69-libmtp.rules.patch
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The attached patch would fix this bug. It adds two rules to skip
printers. The second skips all kinds of printers by checking whether the
standard interface of a printer is present in the USB device. The first
skips HP printers, it is the same rule as HPLIP uses. I have added it
because it covers
There was already a measure against wrongly identifying HP printers as
media players, but it is a rather dirty workaround which does not work
any more (therefore this bug). The rule in the end of 69-libmtp.rules
checks the absence of the env variable libsane_matched and this variable
is set for
** Tags added: rls-ff-incoming
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https://bugs.launchpad.net/bugs/1863239
Title:
/dev/bus/usb/*/* device file of HP multi-function printer assigned to
"audio" group
Now I tried to investigate from which UDEV rule the wrong setting comes
from. First I searched all UDEV rules for the word "audio":
till@till-x1yoga:~$ grep -l '\baudio\b' /*/udev/rules.d/*.rules
/lib/udev/rules.d/50-udev-default.rules
/lib/udev/rules.d/60-persistent-v4l.rules
Attached is the output of
sudo udevadm monitor -e
Output of lsusb:
till@till-x1yoga:~$ lsusb
Bus 002 Device 003: ID 0b95:1790 ASIX Electronics Corp. AX88179 Gigabit Ethernet
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 138a:0097 Validity Sensors, Inc.
Please provide the udevadm database dump about the device in question a)
when it has correct group b) when it does not.
** Changed in: udev (Ubuntu)
Status: New => Invalid
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pulseaudio doesn't ship any udev rules that change group permissions of
devices. Plus it doesn't run as root, but as an unprivileged user.
** Changed in: pulseaudio (Ubuntu)
Status: New => Invalid
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udev source package is obsolete and is not used since precise.
** Changed in: systemd (Ubuntu)
Status: New => Incomplete
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An additional remark:
If a Focal system is booted with the printer plugged in and turned on,
the group ownership gets correctly set to "lp", but if the printer is
only plugged in and/or turned on after boot, it gets "audio" group
ownership.
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** Changed in: libmtp (Ubuntu)
Importance: High => Critical
** Changed in: pulseaudio (Ubuntu)
Importance: High => Critical
** Changed in: systemd (Ubuntu)
Importance: High => Critical
** Changed in: udev (Ubuntu)
Importance: High => Critical
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** Tags added: focal
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Title:
/dev/bus/usb/*/* device file of HP multi-function printer assigned to
"audio" group
Status in
** Changed in: systemd (Ubuntu)
Milestone: None => ubuntu-20.04
** Changed in: pulseaudio (Ubuntu)
Milestone: None => ubuntu-20.04
** Also affects: libmtp (Ubuntu)
Importance: Undecided
Status: New
** Changed in: libmtp (Ubuntu)
Milestone: None => ubuntu-20.04
** Changed
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