> Their guess is that the linux notebook is not setting EDID
> configuration correctly and thus not recognized by the ATEM,
> while the cheap LCD screen propably does not care about EDID
> and just plays everything, therefore a wrong EDID information
> would not matter.
EDIDs work the other way round. An EDID is not "set" by Linux. It is
hard-coded in the monitor and only read by the computer. However it is
sadly common for monitor manufacturers (probably not Blackmagic) to ship
monitors that advertise faulty EDID data. That's probably what an "EDID
manager" is to fix, but I don't know of and have no experience with any
on Linux.
I would like to analyse the EDID being advertised by your ATEM, but
Xrandr.txt seems to show it was not plugged into HDMI when you logged
this bug. Please plug it in and then run:
xrandr --verbose > xrandr2.txt
and attach the resulting file here.
** Package changed: xorg (Ubuntu) => ubuntu
** Changed in: ubuntu
Status: New => Incomplete
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1910537
Title:
incorrect audio-EDID on HDMI, blocking audio transmission over HDMI
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