It's very likely that your hardware uses a DiplayPort-to-HDMI adapter (LSPCon chip):
14.605] (II) intel(0): Output DP1 has no monitor section
14.605] (II) intel(0): Enabled output DP1
14.606] (II) intel(0): Output HDMI1 has no monitor section
14.606] (II) intel(0): Enabled output HDMI1
14.606] (II) intel(0): Output DP2 has no monitor section
14.606] (II) intel(0): Enabled output DP2
14.606] (II) intel(0): Output HDMI2 has no monitor section
14.606] (II) intel(0): Enabled output HDMI2
Linux drivers for such chips have known issues. My suggestion: garbage.
PS: Maybe it's worth to try the other HDMI ports of your TV.