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W520 : No sound with non-Lenovo branded monitor after connected via Displayport


When I connect my external monitor (ASUS PA248) to my W520, the audio from W520 disappears.  When I disconnect it, the audio returns.  This seems a bizarre link between audio and video, but there it is.  Note that the PA248 does not have built-in speakers.


Does anyone have any idea?


Check if your sound settings are activated properly.

To do so, proceed with the following:


  1. Go to Control Panel >> Hardware and Sound >>Sound>> Change System Sounds
  2. Go to the Playback option and check if your system's internal system speakers have been selected as Default.


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