Ubuntu-Mate 21.04 live does not boot

Support & Help Requests Hardware
2

@Cajun_Man0001 welcome. There is an almost identical post-Ubuntu-MATE 21.04 Installer Freezes on PC Install (not a VM). The user is on Ryzen 7 2700X and NVidia GeForce RTX 2070 GPU.

Can you check two things,

  1. When you see MATE logo and progress indicator dots, press 'Esc', that takes you to text mode. See if it gives any clue; where is has hung.
  2. The user in the linked post has posted 'auth.log'. It will be in your USB. Check if you see same error as Failed to activate service 'org.freedesktop.RealtimeKit1': timed out (service_start_timeout=25000ms). Or any other error(s).