Ubuntu 20.04.3 desktop (Cinnamon) - SSH disconnects when user logs off the desktop!

[Bo Berglund]

On Mon, 24 Jan 2022 13:42:03 +0100, Liam Proven <lproven at gmail.com> wrote:

>If Bo doesn't want a monitor attached all the time, perhaps a dummy
>monitor would help?
>
>https://www.amazon.com/Headless-Display-Emulator-Headless-1920x1080-Generation/dp/B06XT1Z9TF
>
>These are fake HDMI monitors. You leave it plugged in and the PC
>thinks there's a screen. It is for this kind of problem, as well as
>related ones.

Except this PC does not have an HDMI port, the 2 monitor connections are
DisplayPort..
But I guess there are such too, on Ebay and Amazon with delivery some weeks off.
Not available in my neighborhood electronics stores.. :(


Using xserver-xorg-video-dummy driver
-------------------------------------
These popped up as suggestions when I googled and found (some old) pages
regarding using the dummy driver:

https://techoverflow.net/2019/02/23/how-to-run-x-server-using-xserver-xorg-video-dummy-driver-on-ubuntu/

The instructions from 2019 are hard to follow since they talk about creating a
named file but without any trace as to WHERE to save it...
Also I suspect that this needs to be somehow connected to the X11 service, but
that too is unclear. In fact the ending part is a problem for me overall, for
example throwing in firefox in the mix...


https://askubuntu.com/questions/453109/add-fake-display-when-no-monitor-is-plugged-in

7 years old so modern kernels were not in use then...
Referencing nowadays non-existing conf files...

https://www.ghacks.net/2010/11/28/configure-linux-to-boot-without-a-monitor/

Even older, from 2010 but discussing the same topic

I have tried to get hold of a valid description for *current* kernels but failed
so far.

It seems like if there is a dummy display driver that can be set to activate if
X11 does not find a physical display, then that would be useful.
But without an install/use instruction I am anyway hosed...



-- 
Bo Berglund
Developer in Sweden