I got this in dmesg.
I reconnected it and it works fine.
What caused that?
> [ 253.203797] nouveau 0000:07:00.0: HDMI-A-1: EDID is invalid:
> [ 253.203801] [00] ZERO 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [ 253.203802] [00] ZERO 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [ 253.203803] [00] ZERO 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [ 253.203803] [00] ZERO 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [ 253.203804] [00] ZERO 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [ 253.203805] [00] ZERO 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [ 253.203806] [00] ZERO 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [ 253.203806] [00] ZERO 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [ 253.203809] nouveau 0000:07:00.0: DRM: DDC responded, but no EDID for
HDMI-A-1