I upgraded the webcam firmware in Windows as you suggested and did a fresh install of Ubuntu 22.04.3. Again, both "HAL library for MIPI Camera through Intel IPU6 by libcamhal0" and "hardware support for Dell XPS 13 9320 by oem-somerville-tentacool-meta" were automatically activated after install. Webcam however did not work.
libcamhal-ipu6ep0 was already installed, but linux-modules-ipu6-generic-hwe-22.04 and linux-modules-ivsc-generic-hwe-22.04 were not.
Then I manually installed linux-modules-ipu6-generic-hwe-22.04 and linux-modules-ivsc-generic-hwe-22.04 and the webcam is now working.
I confirm that Cheese also work if launched with sudo cheese -d "Intel MIPI Camera".
I upgraded the webcam firmware in Windows as you suggested and did a fresh install of Ubuntu 22.04.3. Again, both "HAL library for MIPI Camera through Intel IPU6 by libcamhal0" and "hardware support for Dell XPS 13 9320 by oem-somerville- tentacool- meta" were automatically activated after install. Webcam however did not work.
libcamhal-ipu6ep0 was already installed, but linux-modules- ipu6-generic- hwe-22. 04 and linux-modules- ivsc-generic- hwe-22. 04 were not.
Then I manually installed linux-modules- ipu6-generic- hwe-22. 04 and linux-modules- ivsc-generic- hwe-22. 04 and the webcam is now working.
I confirm that Cheese also work if launched with sudo cheese -d "Intel MIPI Camera".
Thank you again for your help!