Intel MIPI Camera not working out of the box on 25.04 where it did on 24.10

[Fred Potter]

From discourse post:
https://discourse.ubuntu.com/t/intel-mipi-camera-not-working-out-of-the-box-on-25-04-where-it-did-on-24-10/59072/1

The ipu6 camera on a Dell Precision 5480 worked out-of-the-box on Ubuntu 24.10, but no longer does on 25.04-beta. It was suggested on Discourse that this might be a regression in libcamera. I personally don't understand the v4l/libcamera stack well enough to triage / route.

Here's what I'm seeing --

`ffplay /dev/video0` produces a video test image instead of actual video.

However, gstreamer is able to show a good video stream via --

$ gst-launch-1.0 libcamerasrc ! video/x-raw,width=1024,height=768 ! autovideosink

This is on 25.04 beta with libcamera 0.4 --

$ lsb_release -rd
Description: Ubuntu Plucky Puffin (development branch)
Release: 25.04

$ apt-cache policy libcamera-v4l2
libcamera-v4l2:
  Installed: (none)
  Candidate: 0.4.0-5ubuntu1
  Version table:
     0.4.0-5ubuntu1 500
        500 http://us.archive.ubuntu.com/ubuntu plucky/main amd64 Packages

The cam util spews several errors + warnings, but does find the camera --

$ cam -l
[0:35:00.604727833] [36429] INFO Camera camera_manager.cpp:327 libcamera v0.4.0
[0:35:00.618451974] [36436] WARN CameraSensor camera_sensor_legacy.cpp:354 'ov01a10 3-0036': Recommended V4L2 control 0x009a0922 not supported
[0:35:00.618464560] [36436] ERROR V4L2 v4l2_subdevice.cpp:1127 'ov01a10 3-0036': Unable to get rectangle 2 on pad 0/0: Inappropriate ioctl for device
[0:35:00.618467885] [36436] WARN CameraSensor camera_sensor_legacy.cpp:401 'ov01a10 3-0036': The PixelArraySize property has been defaulted to 1280x800
[0:35:00.618470480] [36436] ERROR V4L2 v4l2_subdevice.cpp:1127 'ov01a10 3-0036': Unable to get rectangle 1 on pad 0/0: Inappropriate ioctl for device
[0:35:00.618472866] [36436] WARN CameraSensor camera_sensor_legacy.cpp:412 'ov01a10 3-0036': The PixelArrayActiveAreas property has been defaulted to (0, 0)/1280x800
[0:35:00.618478424] [36436] ERROR V4L2 v4l2_subdevice.cpp:1127 'ov01a10 3-0036': Unable to get rectangle 0 on pad 0/0: Inappropriate ioctl for device
[0:35:00.618480400] [36436] WARN CameraSensor camera_sensor_legacy.cpp:420 'ov01a10 3-0036': Failed to retrieve the sensor crop rectangle
[0:35:00.618482222] [36436] WARN CameraSensor camera_sensor_legacy.cpp:426 'ov01a10 3-0036': The sensor kernel driver needs to be fixed
[0:35:00.618484025] [36436] WARN CameraSensor camera_sensor_legacy.cpp:428 'ov01a10 3-0036': See Documentation/sensor_driver_requirements.rst in the libcamera sources for more information
[0:35:00.618621741] [36436] WARN CameraSensorProperties camera_sensor_properties.cpp:473 No static properties available for 'ov01a10'
[0:35:00.618625448] [36436] WARN CameraSensorProperties camera_sensor_properties.cpp:475 Please consider updating the camera sensor properties database
[0:35:00.618630274] [36436] WARN CameraSensor camera_sensor_legacy.cpp:594 'ov01a10 3-0036': Failed to retrieve the camera location
[0:35:00.618632937] [36436] WARN CameraSensor camera_sensor_legacy.cpp:616 'ov01a10 3-0036': Rotation control not available, default to 0 degrees
[0:35:00.619180138] [36436] WARN IPAProxy ipa_proxy.cpp:160 Configuration file 'ov01a10.yaml' not found for IPA module 'simple', falling back to 'uncalibrated.yaml'
[0:35:00.619189114] [36436] WARN IPASoft soft_simple.cpp:96 IPASoft: Failed to create camera sensor helper for ov01a10
Available cameras:
1: 'ov01a10' (\_SB_.PC00.LNK1)

v4l2-ctl sees many ipu6 video devices. This looks wrong, but I'm not sure what it should look like, and don't have a working system to compare against.

$ v4l2-ctl --list-devices
ipu6 ():
        /dev/video1
        /dev/video2
        /dev/video3
        /dev/video4
        /dev/video5
        /dev/video6
        /dev/video7
        /dev/video8
        /dev/video9
        /dev/video10
        /dev/video11
        /dev/video12
        /dev/video13
        /dev/video14
        /dev/video15
        /dev/video16
        /dev/video17
        /dev/video18
        /dev/video19
        /dev/video20
        /dev/video21
        /dev/video22
        /dev/video23
        /dev/video24
        /dev/video25
        /dev/video26
        /dev/video27
        /dev/video28
        /dev/video29
        /dev/video30
        /dev/video31
        /dev/video32

ipu6 (PCI:0000:00:05.0):
        /dev/media0

Virtual Camera (platform:v4l2loopback-000):
        /dev/video0

dmesg shows the following ipu6 logs --

$ sudo dmesg | grep ipu6
[ 10.600627] intel-ipu6 0000:00:05.0: enabling device (0000 -> 0002)
[ 22.119139] pci 0000:00:05.0: deferred probe pending: intel-ipu6: IPU6 bridge init failed
[ 22.822604] intel-ipu6 0000:00:05.0: Sending BOOT_LOAD to CSE
[ 22.840063] intel-ipu6 0000:00:05.0: Sending AUTHENTICATE_RUN to CSE
[ 22.909654] intel-ipu6 0000:00:05.0: CSE authenticate_run done
[ 22.909664] intel-ipu6 0000:00:05.0: IPU6-v3[a75d] hardware version 5

ProblemType: Bug
DistroRelease: Ubuntu 25.04
Package: libcamera0.4 0.4.0-5ubuntu1
ProcVersionSignature: Ubuntu 6.14.0-15.15-generic 6.14.0
Uname: Linux 6.14.0-15-generic x86_64
ApportVersion: 2.32.0-0ubuntu5
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sun Apr 13 21:06:13 2025
InstallationDate: Installed on 2024-07-25 (263 days ago)
InstallationMedia: Ubuntu 22.04.4 v0.7.8 "Custom Jammy Jellyfish" (20240617)
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/usr/bin/zsh
 TERM=xterm-ghostty
 XDG_RUNTIME_DIR=<set>
SourcePackage: libcamera
UpgradeStatus: Upgraded to plucky on 2025-04-11 (3 days ago)

[Erich Eickmeyer (eeickmeyer)]

I thought about it, so I added ffmpeg as a possibility since this could, actually, be a regression in ffmpeg.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Aaron Whitehouse (aaron-whitehouse)]

I’m on a Dell XPS 13 9315. I used Additional Drivers to turn on the DKMS Intel drivers for the webcam and enrolled the MOK, but the webcam does not work in Firefox (webcam test) or the built in Camera application. It does show a video stream of I use Fred’s gst-launch command.