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No audio from TV when connected to a laptop DisplayPort ...
https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/No-audio-from-TV-when-connected-to-a-laptop-DisplayPort/tac-p/2216006
Under Device Manager - Sound Controllers: Conenant 20585 SmartAudio HD, Intel(R) Display Audio, and four NVIDIA High Definition Audios (locations 0-3). Currently the laptop is docked on a Mini Dock Series 3 (433710U), but even if I connect the cable directly to laptop, I still can't hear sound through TV.
English Community-Lenovo Community
https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T-series-Laptops/Lenovo-ThinkPad-A485-No-Audio-through-USB-C-and-DisplayPort/m-p/4282761?page=1
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lenovo displayport audio - YouTube
https://www.youtube.com/watch?v=042WVZZ1TKA
How to enable audio on external monitor with Displayport connection
T510/W510 Audio over displayport? | NotebookReview
http://forum.notebookreview.com/threads/t510-w510-audio-over-displayport.453665/
Audio support in displayport was added on Dec 22 as part of the 1.2 standard. It seems that AMD was able to release a driver update for some ATI cards to enable the feature. However, the receiving device would also need to support it, and depending on what that is, it might be difficult to upgrade it.
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