Comment on Cable or adapter?
RegalPotoo@lemmy.world 5 months ago
I don’t think so - HDMI and Display Port actually carry their signals in the same way, so the adapter is basically just converting between two plug types without any smarts in the middle.
In theory you could get an adapter that is badly made and adds some noise to the signal or something and forces the monitor to down-spec it’s signal but I’m not sure how likely that is to come across.
SomeoneSomewhere@lemmy.nz 5 months ago
HDMI and DP do not carry their signals in the same way. HDMI/DVI use a pixel clock and one wire pair per colour, whereas DP is packet-based.
“DisplayPort++” is the branding for a DP port that can pretend to an HDMI or DVI port, so an adapter or cable can convert between the two just by rearranging the pins.
To go from pure DisplayPort to HDMI, or to go from an HDMI source to a DP monitor, you need an ‘active’ adapter, which decodes and re-encodes the signal. These are bigger and sometimes require external power.
RegalPotoo@lemmy.world 5 months ago
TIL, thanks
realbadat@programming.dev 5 months ago
To add to this, virtually all GPUs out there with DP are DP++ and will not require an active adapter.
Consumers will almost never need to consider an active adapter for DP to HDMI, as well as single link DVI. HDMI to DP will always require an active (powered) adapter. As would DP to dual link DVI, VGA, or component.