2 Monitors - one with sound working - one with sound not working

[osyren]

I have two monitors, they are both the AOC E2770S. I connected my Logitech Z200 speakers into the aux. port on the back of Monitor #1, this is the one I normally use for sound. When I plug the speakers into Monitor #1 I can't hear any sound but when I plug my speakers into Monitor #2 I can hear sound. I would just like to know why the monitor I normally use for sound just suddenly stopped working and possibly how to fix it. Thanks.

 

[Ralston18]

Check the display settings to verify that Monitor #1 and Monitor #2 are still correctly designated.

Check the cables and verify each monitor's configuration.

Could be some update reversed the monitor's configuration. Driver perhaps? Maybe something in the GPU settings/configuration?

Right click the small speaker icon (usually lower right screen corner) and select "Playback devices". Likewise check if some setting has been changed.

My overall thought is that some update changed things and the "first" monitor (however determined) won.