Nouveau does not send hotplug uevent on HDMI disconnect
When unplugging a HDMI cable this is not immediately acted upon. This is most likely a result of nouveau not sending a hotplug even when the cable is disconnected. Only after force-probing the connection with a tool like drm_info
the disconnect is noticed.
I am using the wayland compositor sway, where I first tried reporting it - see that bug report for more info.
Edit: here's a dmesg log: dmesg_log
when unplugging the HDMI cable the message nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for HDMI-A-4
appears.
Edited by Friso Smit