RealVNC server not connecting locally after update from 20.10 to 21.04

[Karl Auer]

On Tue, 2021-04-27 at 13:23 +0200, Gilles Gravier wrote:
> > You need to find out why RealVNC is not providing
> > local service.
> 
> Indeed. And why it was working before...

How did you upgrade? Was it an in-place upgrade, or did you install the
OS from scratch and then re-install RealVNC? I'm asking so that we can
exclude (or deal with) the possibility that the server software
changed.

I am surprised that there is no logging related to this. If RealVNC
tried to bind to port 5900, I would have expected to see some evidence
of the attempt, positive or negative. Check out syslog as well, just in
case there is backscatter.

Some server software has a "foreground" or "debug" mode, where startup
messages go to the console. Maybe see if RealVNC has such a thing, and
run the server in a console to see what it's doing.

Might be worth double checking the licensing too. And (since RealVNC,
as far as I know, is a commercial product) you might try seeking help
from the vendor.

Regards, K.


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Karl Auer (kauer at biplane.com.au)
http://www.biplane.com.au/kauer

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