FS#59558 - [linux] Multiple device files for the same hardware (build-in webcam) created.

Attached to Project: Arch Linux
Opened by Stefan Jensen (sjensen) - Tuesday, 07 August 2018, 21:04 GMT
Last edited by Doug Newgard (Scimmia) - Thursday, 09 August 2018, 16:36 GMT
Task Type Bug Report
Category Packages: Core
Status Closed
Assigned To No-one
Architecture All
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:

I ended up having two device files for my internal webcam on my Thinkpad X200 with this kernel.
No other video hardware installed, only the build-in webcam.

Additional info:

$uname -a
Linux localhost.localdomain 4.17.12-arch1-1-ARCH #1 SMP PREEMPT Fri Aug 3 07:16:41 UTC 2018 x86_64 GNU/Linux

$ls -l /dev/video*
crw-rw----+ 1 root video 81, 0 7. Aug 22:45 /dev/video0
crw-rw----+ 1 root video 81, 1 7. Aug 22:45 /dev/video1

This is no problem with the LTS Kernel:

$uname -a
Linux localhost.localdomain 4.14.60-1-lts #1 SMP Sat Aug 4 21:34:07 CEST 2018 x86_64 GNU/Linux

$ls -l /dev/video*
crw-rw----+ 1 root video 81, 0 7. Aug 22:34 /dev/video0

Hardware (build-in Webcam):

$lsusb |grep cam
Bus 001 Device 006: ID 17ef:480c Lenovo Integrated Webcam
This task depends upon

Closed by  Doug Newgard (Scimmia)
Thursday, 09 August 2018, 16:36 GMT
Reason for closing:  Not a bug
Comment by Stefan Jensen (sjensen) - Thursday, 09 August 2018, 11:33 GMT
Obviously the two device nodes are wanted (uvcvideo). However, the naming of the second node is confusing to me.

Quote from "https://www.mail-archive.com/linux-media@vger.kernel.org/msg130841.html":
"There are two device nodes now, as one is provided to output meta-data or such."

Please close.

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