the command dmesg will tell you all kernel messages from the start of
the buffer to now.

You probably want to find the Wayland/Xorg log file and see what it
says about edid.

/var/log/Xorg* for Xorg, I don't use wayland but its log files should
be a the same location.

And how it works or does not work may depend on the firmware/driver
for your video card, and or the type of video card.

On Wed, Aug 24, 2022 at 9:15 PM Anil F Duggirala
<anilduggir...@fastmail.fm> wrote:
>
> On Wednesday, August 24, 2022 11:46:24 AM -05 Barry wrote:
> > Check dmesg for any messages about the video interface or monitor.
> > Are there any messages about edid?
>
> Hello Barry,
> I tried looking in dmesg but cannot find anything mentioning edid. I'm not 
> sure
> this would help me. Detection appears to be working fine when I boot with the
> monitor connected. It does not do the nice detection when I connect the
> monitor after logging in. Dmesg would not show me anything that happens after
> login right?
>
> I will try checking again, when I have the monitor available again to see if
> maybe I can find something related to the monitor in dmesg.
>
> thank you,
>
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