Comment 112 for bug 1955383

hi all, the webcam on my Dell XPS 9320 was working until this week. I just did the standard required system upgrades and it has stopped working. zbarcam shows an empty black image. cheese pauses before showing "There was an error playing video from the webcam". Chromium https://webcamtests.com/ detects my Intel MIPI Camera but after I click on "Test my cam" I get the error: "The video track is paused." What should I check?

:; sudo apt upgrade && sudo apt update && dpkg -l oem-somerville-tentacool-meta
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
Get more security updates through Ubuntu Pro with 'esm-apps' enabled:
  maven libmaven3-core-java libavdevice58 ffmpeg libopenexr25 libpostproc55
  libmagickcore-6.q16-6-extra libavcodec58 libmagickwand-6.q16-6 libavutil56
  libswscale5 libmagickcore-6.q16-6 libswresample3 imagemagick-6-common
  libavformat58 libavfilter7
Learn more about Ubuntu Pro at https://ubuntu.com/pro
0 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
Hit:1 http://fr.archive.ubuntu.com/ubuntu jammy InRelease
Hit:2 http://dell.archive.canonical.com jammy InRelease
Hit:3 http://fr.archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit:4 https://ppa.launchpadcontent.net/oem-solutions-group/intel-ipu6/ubuntu jammy InRelease
Get:5 http://fr.archive.ubuntu.com/ubuntu jammy-backports InRelease [109 kB]
Hit:6 http://security.ubuntu.com/ubuntu jammy-security InRelease
Fetched 109 kB in 1s (216 kB/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-=============================-============-============-=====================================
ii oem-somerville-tentacool-meta 22.04ubuntu6 all hardware support for Dell XPS 13 9320
:; zbarcam
:; sudo dmesg | grep ipu6
[ 10.199619] intel-ipu6 intel-ipu: enabling device (0000 -> 0002)
[ 10.199821] intel-ipu6 intel-ipu: Device 0x465d (rev: 0x2)
[ 10.199845] intel-ipu6 intel-ipu: physical base address 0x603c000000
[ 10.199846] intel-ipu6 intel-ipu: mapped as: 0x00000000a28c5f74
[ 10.199908] intel-ipu6 intel-ipu: Unable to set secure mode
[ 10.199910] intel-ipu6 intel-ipu: IPU in non-secure mode
[ 10.199911] intel-ipu6 intel-ipu: IPU secure touch = 0x0
[ 10.199913] intel-ipu6 intel-ipu: IPU camera mask = 0xff
[ 10.199973] intel-ipu6 intel-ipu: Skip ipc reset for non-secure mode
[ 10.199976] intel-ipu6 intel-ipu: IPC reset done
[ 10.199978] intel-ipu6 intel-ipu: cpd file name: intel/ipu6ep_fw.bin
[ 10.210322] intel-ipu6 intel-ipu: FW version: 20220510
[ 10.212444] intel-ipu6 intel-ipu: IPU6-v3 driver version 1.0
[ 10.295703] intel-ipu6-psys intel-ipu6-psys0: pkg_dir entry count:8
[ 10.296695] intel-ipu6-psys intel-ipu6-psys0: psys probe minor: 0
[ 19.578111] intel-ipu6-isys intel-ipu6-isys0: bind ov01a10 17-0036 nlanes is 1 port is 2
[ 19.578339] intel-ipu6-isys intel-ipu6-isys0: All sensor registration completed.
[ 155.172121] intel-ipu6-isys intel-ipu6-isys0: dma alloc of size 536903680 failed
:; sudo dmesg | grep 9320
[ 0.000000] DMI: Dell Inc. XPS 9320/0P9FNW, BIOS 2.2.1 04/17/2023
:; chromium https://webcamtests.com/
Gtk-Message: 12:28:27.557: Not loading module "atk-bridge": The functionality is provided by GTK natively. Please try to not load it.

(chrome:31619): Gtk-WARNING **: 12:28:27.599: GTK+ module /snap/chromium/2590/gnome-platform/usr/lib/gtk-2.0/modules/libcanberra-gtk-module.so cannot be loaded.
GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported.
Gtk-Message: 12:28:27.599: Failed to load module "canberra-gtk-module"

(chrome:31619): Gtk-WARNING **: 12:28:27.600: GTK+ module /snap/chromium/2590/gnome-platform/usr/lib/gtk-2.0/modules/libcanberra-gtk-module.so cannot be loaded.
GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported.
Gtk-Message: 12:28:27.600: Failed to load module "canberra-gtk-module"
[31619:31619:0904/122827.620588:ERROR:chrome_browser_cloud_management_controller.cc(163)] Cloud management controller initialization aborted as CBCM is not enabled.
WARNING: Kernel has no file descriptor comparison support: Operation not permitted
[31619:31745:0904/122830.840454:ERROR:udev_watcher.cc(98)] Failed to begin udev enumeration.
^C
:; systemctl list-units --failed
  UNIT LOAD ACTIVE SUB DESCRIPTION
0 loaded units listed.
:; uname -a
Linux dataseat 6.2.0-31-generic #31~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Wed Aug 16 13:45:26 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
:; cheese

(cheese:32146): Gdk-WARNING **: 12:33:01.320: Native Windows taller than 65535 pixels are not supported

(cheese:32146): cheese-WARNING **: 12:33:31.429: Internal data stream error.: ../libs/gst/base/gstbasesrc.c(3127): gst_base_src_loop (): /GstCameraBin:camerabin/GstWrapperCameraBinSrc:camera_source/GstBin:bin18/GstPipeWireSrc:pipewiresrc1:
streaming stopped, reason not-negotiated (-4)

(cheese:32146): Clutter-CRITICAL **: 12:34:18.336: Unable to create dummy onscreen: No foreign surface, and wl_shell unsupported by the compositor
:; dpkg -l libcamhal-ipu6ep0 linux-modules-ipu6-generic-hwe-22.04 linux-modules-ivsc-generic-hwe-22.04
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-====================================-=======================================-============-==============================================
ii libcamhal-ipu6ep0 0~git202302081109.884b81a~ubuntu22.04.4 amd64 HAL library for MIPI camera through Intel IPU6
ii linux-modules-ipu6-generic-hwe-22.04 6.2.0.31.31~22.04.8 amd64 Extra drivers for ipu6 for the generic flavour
ii linux-modules-ivsc-generic-hwe-22.04 6.2.0.31.31~22.04.8 amd64 Extra drivers for ivsc for the generic flavour