Article Number: 000125484
The audio playback does not work when a Dell monitor is connected to the computer using a DisplayPort or High Definition Media Interface (HDMI).
When an audio-supported video cable is being used such as a DisplayPort or HDMI cable, Windows may change the default audio playback device to the audio-supported cable assuming that another audio device is being used. The issue may occur when a laptop is coming out of sleep mode as the system is detecting the audio-capable cable first.
Change the Playback Device configuration in Control Panel
The external audio device causing the issue can be disabled so that the issue does not occur again.
Additional Reference for Troubleshooting Sound or Audio Issues:
Out of warranty? No problem. Browse to the Dell.com/support website and enter your Dell Service Tag and view our offers.
Monitor Accessories, Alienware and Dell Gaming Monitors, C Series, D Series, E Series, Legacy Monitors, P Series, S Series, SE Series, UltraSharp (U) Series
UltraSharp Premier (UP) Series
03 Jun 2021