DisplayPort does audio. The main reason for HDMI is DRM.
Re:DisplayPort and 4K
by matthewmacleod on Tuesday February 18, 2020 @03:44AM
(#22354459)
DisplayPort has done HDCP and DPCP DRM since early on, so I don’t think it’s that.
DRM was added to DP later on, IIRC, it wasn't part of original standard.
HDMI adding audio and DRM was the core of the proposal, plus a connector that was more consumer friendly.
Re:DisplayPort and 4K
by neurostimulant on Tuesday February 18, 2020 @02:13AM
(#22354103)
I think HDCP is also one of the top reason. Does display port support content protection like HDMI?
This is a common misconception. However DisplayPort transmits audio as well.
Re:DisplayPort and 4K
by jeremyvisser on Tuesday February 18, 2020 @02:15AM
(#22354108)
DisplayPort does audio.
Source: using DisplayPort with audio.
For most consumers, plugging in just one cable that does everything is a lot more convenient.
Edit: sorry, didn't know DP can also stream audio, my bad