I got out the old VGA monitor and plugged it via adapter into the other
DP plug. No change except ssh into it and notice inxi reports I got 2
monitors running now.
Uninstalled xfce and installed gnome; no go.
Now I think about my headless M700 print server connecting a couple usb
printers to my local network. I know at one time I had a monitor running
on that, displaying a desktop.
I powered down the M700 print server... I see it has 2 DP and 1 VGA
port. I first plug it into my DP adapters... Same thing, no graphics! I
connect its VGA to the monitor and it works. 😮
So I swap hard drives between the two units. Now my headless print
server has no more display output and my new Debian install is working
on this old VGA cord. To fix all my problems here, I likely only need to
buy more DP - HDMI cords, or get a DP monitor.
Lesson learned: I can't depend much on digital - to - VGA converters.
I'll never forget the dual monitor setup I found in a client's office a
couple years ago. He had 2 DVI to VGA converters plugged into his pc,
then 2 VGA cords going to his monitors, then a VGA to DVI converter
plugged into each monitor. He looked at me and says, "What's wrong? it's
been working like this for a long time"
I'm not sure, some? all? DVI also has analog available, possibly he had
a straight-through analog circuit.
Thanks everyone for all the help!
--
Titus Newswanger
Curtiss WI
