The new Realtek ALC3281 audio driver (6.0.9369.1, July 25, 2022, XPS 15 9520, Precision 5570) has been published here. Please download and install the driver update. Once the driver has finished updating, restart the Laptop. This driver should resolve this issue.
All-- I am running Windows 11 on a brand-new Dell XPS 15 9520.  Has anyone ever experienced an issue where the computer loses both audio speakers and microphone when ending a Zoom meeting?  For example, when I start a Zoom meeting, audio works just fine for both the speaker and the microphone. But as soon as I end the meeting and shut down Zoom, no audio will play. If I try to raise the volume it says "no audio device installed." A simple restart of the PC fixes the issue, but it's frustrating having to restart as soon as I end a Zoom meeting. Again, no issues at all running Zoom...it's when I close the Zoom program that I lose all audio functionality. Any thoughts on a possible solution?
XPS 9520, Speaker/Microphone cuts out after Zoom meetings