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For those looking for an answer you need to add to the XML file this <devices> <controller type='virtio-serial' index='0'/> <channel type='spicevmc'> <target type='virtio' name='com.redhat.spice.0'/> </channel> </devices> and install the guest, the debian package is called spice-vdagent and reboot the ...


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Run x11vnc as gdm user: sudo -u gdm x11vnc -rfbauth /etc/vncpasswd -auth /run/user/42/gdm/Xauthority -display :0


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Having framed yesterday's frustrations more succinctly, I used a well-known search engine to look for "linux polkit local and remote sessions" and got this as the top result - Enabling system management privileges for non-local users - How the heck does polkit work, anyways? The answer (slightly modified from the linked question) is to create a ...


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For my situation, my machine was auto logged in as UserX and I was ssh'ed into the machine and running the x11vnc command as UserY


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