[GTALUG] confusing standards: first USB, now HDMI

[D. Hugh Redelmeier]

The USB standardization committee has created layers of naming confusion.  
Horrible.

Now I find out that that is the case for HDMI too.

See <https://tftcentral.co.uk/articles/when-hdmi-2-1-isnt-hdmi-2-1>

    HDMI 2.0 no longer exists, and devices should not claim compliance to 
    v2.0 as it is not referenced any more

    The features of HDMI 2.0 are now a sub-set of 2.1

    All the new capabilities and features associated with HDMI 2.1 are 
    optional (this includes FRL, the higher bandwidths, VRR, ALLM and 
    everything else)

    If a device claims compliance to 2.1 then they need to also state 
    which features the device supports so there is “no confusion” (hmmmm)


Here's a list of the interesting new stuff in HDMI 2.1:

    Support for much higher bandwidths than older generations, allowing 

    Support for higher resolutions – including 4K and even up to 8K

    Support for the combination of 4K and 120Hz high refresh rate 
    (including at 10-bit, HDR and without colour compression)

    Variable Refresh Rate (VRR) support

    ALLM (Auto Low Latency Mode) support