All my sources are centralised and switched centrally. The TV is used as a simple HDMI monitor, its internal tuners are never used and its black level has never been set for them (black level is set per HDMI input). The HDBaseT matrix is sending a standardised (1080p SDR TV) EDID to the T630.
There is nothing on the TV to indicate that it recognises it has a PC input (nor would I expect there to be given the above); however one reason for my asking is that the T630 has DisplayPort outputs rather than native HDMI (I use a DisplayPort to HDMI cable).
Thanks
fishy