[SOLVED] No headphone output

[Tim Curtis]

Thats because AFAIK the default (kernel mode) driver for integrated audio in Bookworm only supports HDMI. There may be some sort of option for it or along side it to enable the Headphone port but I couldn't find it.

There is an option in System Config named "Integrated audio" that allows the legacy firmware mode driver to be selected but this is to support a Headphone-only scenario. The HDMI ports won't work correctly with this driver.