For the longest time all digital video protocols kept trying to pump data at standard VGA/CRT timings despite this technology being obsolete for the last 20 yea

For the longest time all digital video protocols kept trying to pump data at standard VGA/CRT timings despite this technology being obsolete for the last 20 years. DVI just encodes VGA signal in digital form :( Same for HDMI. Both are still sending pixels at VGA timings, Hsync/Vsync/blanking and all, with clocking locked to PixelClock. DisplayPort is packetized, but not in a 100% sane way. You would expect that clean slate purely digital interface designers would at least optionally allow sending whole screen update at a time. Alas you are still sending same VGA formatted pixel stream (Hsync/Vsync/blanking), just chopped into TUs (32-64 symbol Transfer Units) with stuffing (aka never used garbage) between them, even when connected to eDP display supporting Panel Self-Refresh (own frame buffer inside display). I havent followed USB 4.0 closely, but there is a chance the newest spec finally flipped from lane switching (dedicating whole pins to useless DP signaling with all the Hsync/Vsync/blanking+garbage stuffing) to real packetized protocol, but knowing designs by committee its the DP packets still with all the garbage and legacy cruft. I Fully agree we should have switched to Video being just pure data transfer as soon as first Self Refresh/Dynamic Refresh panels showed up on the market.