Some apps will not load in VNC, why?

[Bijan Soleymani]

On 2022-01-24 3:11 p.m., Bo Berglund wrote:
> I have installed TigerVNC in LinuxMint-Cinnamon on my headless Mini PC (see
> other thread about SSH disconnection).
> 
> It works very well in general terms but I just discovered that when I want to
> use certain applications they never display.
> Here is an list of a some [...]

I am unable to run gparted in VNC either.

I get:
bijan at bijan-xps:~$ gparted
Error executing command as another user: No authentication agent found.

I suppose there are two fixes.

1. since you are logged in locally, you can run x11vnc to connect to the 
local display via VNC and run gparted in that VNC.

2. configure polkit it or whatever is responsible for prompting for a 
password to work in VNC sessions.

https://forums.debian.net/viewtopic.php?t=146516

https://itectec.com/unixlinux/ssh-enabling-system-management-privileges-for-non-local-users-how-the-heck-does-polkit-work-anyways/

Bijan