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...4:4:4 thing is referring to... > I always get confused by such notation), Sadly, it is a throw back to 'Chroma subsampling' (my days designing with NTSC editing hardware still haunt me.) They reduce the color information so there is less bandwidth in the cable. (thus displayport and thunderbolt3 are headed to 40G (need 18G+overhead or 20G for 12bit 3840x2160 60hz RGB or only 12G+ for 8bit(24)) > only RGB. Also there's no > HDMI 2.0 support in nouveau as yet, mostly due to lack of interest and > hardware. However you should still see a 4k at 30 mode exposed > (probably)....

This is sort of working -- but I can't get it to do a 4k output. Not sure how the monitor resolution is detected - This monitor is supposed to do 3480x1200 60hz 4:4:4 But the info I get from hwinfo is different. How does nouveau get this information? If it is from an ID - with a list - the list is probably is wrong. # hwinfo --monitor 95: None 00.1: 10002 LCD Monitor [Created at

The wrong values are reported from pcie_bandwidth_available() which can cause problems for performance of eGPUs. This series overhauls Thunderbolt related device detection and uses the changes to change the behavior of pcie_bandwidth_available(). v2->v3: * Stop lumping all thunderbolt VSEC and USB4 devices together, introduce is_virtual_link instead * Drop unnecessary patches Mario