I found similar a error message to this
snd_hda_codec_hdmi hdaudioC0D2: Monitor plugged-in, Failed to power up codec ret=[-13]
in other discussions on this forum and Arch forum
Display goes black, Kernel 5.9 & disconnecting HDMI - #10 by grendelx
I suggest you try this to disable HDMI silent_stream
sudo tee /etc/modprobe.d/snd_hda_hdmi.conf <<< 'options snd_hda_codec_hdmi enable_silent_stream=N'