Ubuntu
udev package

same path_id result for different input devices

Bug #606014 reported by Malcolm Parsons on 2010-07-15

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	udev (Ubuntu)	Triaged	Low	Unassigned

Bug Description

Binary package hint: udev

I have two USB DVB-T TV tuners.
Both have IR receivers.
udev gives them the same path id:

malcolm@mythtv:~$ /lib/udev/path_id /devices/pci0000:00/0000:00:04.1/usb1/1-4/input/input8
ID_PATH=pci-0000:00:04.1
malcolm@mythtv:~$ /lib/udev/path_id /devices/pci0000:00/0000:00:04.1/usb1/1-1/input/input7
ID_PATH=pci-0000:00:04.1

I've applied the patch in bug 546128 to get by-path symlinks for input devices, but there is only a symlink for one of them:

~$ ls -l /dev/input/by-path/
total 0
lrwxrwxrwx 1 root root 9 2010-07-15 17:48 pci-0000:00:04.0-usb-0:5:1.0-event-kbd -> ../event3
lrwxrwxrwx 1 root root 9 2010-07-15 17:48 pci-0000:00:04.0-usb-0:5:1.1-event-mouse -> ../event4
lrwxrwxrwx 1 root root 9 2010-07-15 17:48 pci-0000:00:04.0-usb-0:5:1.1-mouse -> ../mouse1
lrwxrwxrwx 1 root root 9 2010-07-15 17:48 pci-0000:00:04.1-event-ir -> ../event8
lrwxrwxrwx 1 root root 9 2010-07-15 17:48 pci-0000:00:04.1-usb-0:2:1.0-event -> ../event5

I expect path_id to return a unique identifier.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: udev 151-12 [modified: lib/udev/rules.d/60-persistent-input.rules]
ProcVersionSignature: Ubuntu 2.6.32-23.37-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-23-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
CustomUdevRuleFiles: 41-mythtv-permissions.rules
Date: Thu Jul 15 20:29:56 2010
MachineType: Acer Aspire R3610
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-23-generic root=UUID=e231b902-35b7-4031-9a6f-d712bbf14c22 ro quiet splash acpi_enforce_resources=lax
ProcEnviron:
PATH=(custom, user)
LANG=en_GB.utf8
SHELL=/bin/bash
SourcePackage: udev
dmi.bios.date: 12/02/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P01-A4L
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: FMCP7A-ION-LE
dmi.board.vendor: Acer
dmi.chassis.type: 3
dmi.chassis.vendor: Acer
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP01-A4L:bd12/02/2009:svnAcer:pnAspireR3610:pvr:rvnAcer:rnFMCP7A-ION-LE:rvr:cvnAcer:ct3:cvr:
dmi.product.name: Aspire R3610
dmi.sys.vendor: Acer

Tags:

Revision history for this message

Malcolm Parsons (malcolm-parsons) wrote on 2010-07-15:

BootDmesg.txt Edit (50.2 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (6.2 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (1.3 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (12.3 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (480 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (2.9 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.7 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (3.3 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (118.0 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (267.7 KiB, text/plain; charset="utf-8")

Martin Pitt (pitti) on 2010-08-27

Changed in udev (Ubuntu):
status:	New → Triaged
summary:	- same path for different input devices + same path_id result for different input devices
Changed in udev (Ubuntu):
importance:	Undecided → Low

Revision history for this message

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Ubuntuudev package