$ apt policy v4l2-relayd
v4l2-relayd:
Installed: 0.1.2-0ubuntu3.1
Candidate: 0.1.2-0ubuntu3.1
Version table:
*** 0.1.2-0ubuntu3.1 500
500 http://dell.archive.canonical.com noble/somerville amd64 Packages
100 /var/lib/dpkg/status
0.1.2-0ubuntu3 500
500 http://archive.ubuntu.com/ubuntu noble/universe amd64 Packages
$ sudo systemctl status [email protected]
× [email protected] - v4l2-relay daemon service for default
Loaded: loaded (/usr/lib/systemd/system/[email protected];
enabled-runtime; preset: enabled)
Active: failed (Result: start-limit-hit) since Thu 2025-12-18
14:03:32 UTC; 7min ago
Duration: 51ms
Process: 2009 ExecCondition=/usr/bin/test -n ${VIDEOSRC}
(code=exited, status=0/SUCCESS)
Process: 2011 ExecCondition=/usr/bin/test -n $FORMAT (code=exited,
status=0/SUCCESS)
Process: 2021 ExecCondition=/usr/bin/test -n $WIDTH (code=exited,
status=0/SUCCESS)
Process: 2030 ExecCondition=/usr/bin/test -n $HEIGHT (code=exited,
status=0/SUCCESS)
Process: 2033 ExecCondition=/usr/bin/test -n $FRAMERATE
(code=exited, status=0/SUCCESS)
Process: 2039 ExecCondition=/usr/bin/test -n ${CARD_LABEL}
(code=exited, status=0/SUCCESS)
Process: 2041 ExecStart=/bin/sh -c DEVICE=$(grep -l -m1 -E
"^${CARD_LABEL}$" /sys/devices/virtual/video4linux/*/name | cut -d/
-f6); exec /usr/bin/v4l2-relayd -i >
Main PID: 2041 (code=exited, status=0/SUCCESS)
CPU: 86ms
Dec 18 14:03:32 localhost systemd[1]: [email protected]:
Scheduled restart job, restart counter is at 5.
Dec 18 14:03:32 localhost systemd[1]: [email protected]:
Start request repeated too quickly.
Dec 18 14:03:32 localhost systemd[1]: [email protected]:
Failed with result 'start-limit-hit'.
Dec 18 14:03:32 localhost systemd[1]: Failed to start
[email protected] - v4l2-relay daemon service for default.
And that's because v4l2loopback upstream commit 5092ea9
(https://github.com/v4l2loopback/v4l2loopback/commit/5092ea9a7667564fbfc7e4e4ae9d8a2b2757649f)
breaks compatibility with gstreamer/noble. Using v4l2loopback-dkms
version 0.12.7-2ubuntu5+exp.1 from
https://launchpad.net/~canonical-hwe-team/+archive/ubuntu/experimental-dkms
is a known work-around.
v4l2loopback-dkms/noble version 0.12.7-2ubuntu5.1 is being SRU-ed in
https://launchpad.net/bugs/2114259 .
--
Regards,
You-Sheng Yang
** Attachment added: "dmesg.6.17.0-1008-oem.v4l2loopback-0.15.0-0ubuntu2.bad"
https://bugs.launchpad.net/bugs/2136769/+attachment/5934594/+files/dmesg.6.17.0-1008-oem.v4l2loopback-0.15.0-0ubuntu2.bad
** Attachment added:
"dmesg.6.17.0-1008-oem.v4l2loopback-0.12.7-2ubuntu5+exp.1.good"
https://bugs.launchpad.net/bugs/2136769/+attachment/5934595/+files/dmesg.6.17.0-1008-oem.v4l2loopback-0.12.7-2ubuntu5+exp.1.good
** Summary changed:
- Dell Pro 16 Plus (PB16250): Internal IPU6 camera not detected on Ubuntu 24.04
OEM kernel
+ v4l2loopback >= 0.14.0 breaks gstreamer/noble
** Also affects: linux-oem-6.17 (Ubuntu)
Importance: Undecided
Status: New
** Also affects: v4l2loopback (Ubuntu)
Importance: Undecided
Status: New
** Also affects: v4l2loopback (Ubuntu Questing)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.14 (Ubuntu Questing)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.17 (Ubuntu Questing)
Importance: Undecided
Status: New
** Also affects: v4l2loopback (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.14 (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.17 (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: v4l2loopback (Ubuntu Plucky)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.14 (Ubuntu Plucky)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.17 (Ubuntu Plucky)
Importance: Undecided
Status: New
** Also affects: v4l2loopback (Ubuntu Resolute)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.14 (Ubuntu Resolute)
Importance: Undecided
Assignee: You-Sheng Yang (vicamo)
Status: New
** Also affects: linux-oem-6.17 (Ubuntu Resolute)
Importance: Undecided
Status: New
** Changed in: linux-oem-6.14 (Ubuntu Plucky)
Status: New => Invalid
** Changed in: linux-oem-6.14 (Ubuntu Questing)
Status: New => Invalid
** Changed in: linux-oem-6.14 (Ubuntu Resolute)
Status: New => Invalid
** No longer affects: linux-oem-6.14 (Ubuntu)
** No longer affects: linux-oem-6.14 (Ubuntu Noble)
** No longer affects: linux-oem-6.14 (Ubuntu Questing)
** No longer affects: linux-oem-6.14 (Ubuntu Plucky)
** No longer affects: linux-oem-6.14 (Ubuntu Resolute)
** Changed in: linux-oem-6.17 (Ubuntu Plucky)
Status: New => Invalid
** Changed in: linux-oem-6.17 (Ubuntu Noble)
Status: New => Triaged
** Changed in: linux-oem-6.17 (Ubuntu Questing)
Status: New => Invalid
** Changed in: linux-oem-6.17 (Ubuntu Resolute)
Status: New => Invalid
** Changed in: v4l2loopback (Ubuntu Noble)
Status: New => Invalid
** Changed in: v4l2loopback (Ubuntu Plucky)
Status: New => Invalid
** Changed in: v4l2loopback (Ubuntu Questing)
Status: New => In Progress
** Changed in: v4l2loopback (Ubuntu Resolute)
Importance: Undecided => Critical
** Changed in: v4l2loopback (Ubuntu Resolute)
Status: New => In Progress
** Changed in: v4l2loopback (Ubuntu Resolute)
Assignee: (unassigned) => You-Sheng Yang (vicamo)
** Changed in: v4l2loopback (Ubuntu Questing)
Importance: Undecided => Critical
** Changed in: v4l2loopback (Ubuntu Questing)
Assignee: (unassigned) => You-Sheng Yang (vicamo)
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
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https://bugs.launchpad.net/bugs/2136769
Title:
v4l2loopback >= 0.14.0 breaks gstreamer/noble
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2136769/+subscriptions
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