Comment 121 for bug 1955383

After a bit of a fight, I've managed to get the MIPI camera working on my Lenovo ThinkPad X1 Carbon Gen 10. Here's what I've got:

- I'm using Ubuntu 22.04.3 LTS.
- I'm using Kernel 6.2.0-34-generic (with 6.2.0-35-generic for example it doesn't work for me)

With the above, I followed these steps: https://wiki.ubuntu.com/Lenovo

And I have added these configurations (replacing what is there, if any):

- In the file /etc/modprobe.d/v4l2loopback.conf:

options v4l2loopback card_label="Intel MIPI Camera" exclusive_caps=1 video_nr=0

- In the /etc/modprobe.d/v4l2-relayd.conf file:

options v4l2loopback exclusive_caps=1 card_label="Intel MIPI Camera"

- In the /etc/default/v4l2-relayd file:

# GStreamer source element name:
VIDEOSRC="icamerasrc"
#SPLASHSRC="filesrc location=/.../splash.png ! pngdec ! imagefreeze num-buffers=4 ! videoscale ! videoconvert"
# Output format, width, height, and frame rate:
FORMAT=NV12
WIDTH=1280
HEIGHT=720
FRAMERATE=30/1
# Virtual video device name:
CARD_LABEL="Intel MIPI Camera"
# Extra options to pass to v4l2-relayd:
#EXTRA_OPTS=-d

With this, after rebooting the system, the camera usually works in both chrome and firefox (meet, zoom, webcam test, etc...).

- In Cheese, I can also get it to work by launching it this way:

sudo cheese -d "Intel MIPI Camera".

- Sometimes when a black screen appears, just restart the v4l2-relayd service:

sudo systemctl restart v4l2-relayd.service

I hope this helps someone