I have a Dell XPS13 laptop. When I'm working at my home office, I plug it into a small USB-C dock. The dock has an HDMI cable that goes to my external monitor. The monitor also acts as a USB hub so there's a USB uplink cable from the dock to the monitor. My keyboard, mouse and webcam and external speakers are all plugged into sockets on the monitor.
I assume that the audio output goes through the HDMI cable to the monitor.
Under Windows 10, I'd plug the laptop into the dock and everything worked perfectly. I updated to Windows 11 on Tuesday and now everything works except the external monitors.
The sound settings dialogue box doesn't see the external speakers so I'm not offered them as an output option - so I'm currently only able to get sound out of my laptop speakers. That's not a terrible problem to have, but I'd prefer to use the external speakers which have previously worked fine.
If anyone has any suggestions for fixing this, I'd be very grateful. Please let me know if you need any more information.