can't reach PI using VNC after noraml update

[david_1234]

Hello ,
I have a working PI 4 buster worked for 3 months now
today I run
sudo apt-get update
sudo apt-get upgrade

told me I need to reboot when finish

now I can't enter VNC ,and I don''t get any display on the screen.
why?

can only enter using SSH
what went wrong ?

Code: Select all

systemctl status vncserver-x11-serviced.service
 vncserver-x11-serviced.service - VNC Server in Service Mode daemon
   Loaded: loaded (/usr/lib/systemd/system/vncserver-x11-serviced.service; enabled; vendor preset: enabled)
   Active: active (running) since Sun 2020-01-26 15:06:09 IST; 34min ago
 Main PID: 437 (vncserver-x11-s)
    Tasks: 2 (limit: 4915)
   Memory: 15.2M
   CGroup: /system.slice/vncserver-x11-serviced.service
           גג437 /usr/bin/vncserver-x11-serviced -fg
           גג464 /usr/bin/vncserver-x11-core -service

Jan 26 15:40:12 raspberrypi vncserver-x11[464]: AgentInitCheck: no response from agent
Jan 26 15:40:17 raspberrypi vncserver-x11[464]: AgentInitCheck: agent comms failure
Jan 26 15:40:22 raspberrypi vncserver-x11[464]: AgentInitCheck: no response from agent
Jan 26 15:40:27 raspberrypi vncserver-x11[464]: AgentInitCheck: agent comms failure
Jan 26 15:40:32 raspberrypi vncserver-x11[464]: AgentInitCheck: no response from agent
Jan 26 15:40:37 raspberrypi vncserver-x11[464]: AgentInitCheck: agent comms failure
Jan 26 15:40:42 raspberrypi vncserver-x11[464]: AgentInitCheck: no response from agent
Jan 26 15:40:47 raspberrypi vncserver-x11[464]: AgentInitCheck: agent comms failure
Jan 26 15:40:52 raspberrypi vncserver-x11[464]: AgentInitCheck: no response from agent
Jan 26 15:40:57 raspberrypi vncserver-x11[464]: AgentInitCheck: agent comms failure

[pcmanbob]

Try running the update again this time use the recommended commands

sudo apt update
sudo apt full-upgrade

This will pull In all relevent dependences

https://www.raspberrypi.org/documentati ... pdating.md

[david_1234]

I'm trying it now ,
so when do I use "update" and when I use "Full-update"?
up until now I didn't now this command ....

Thanks ,

[pcmanbob]

I'm trying it now ,
so when do I use "update" and when I use "Full-update"?
up until now I didn't now this command ....

Thanks ,

The change to full-upgrade became the recommended command just before buster was released last year.

[david_1234]

Didn't know this

Thanks you so much - it help and now it's working

[fruitoftheloom]

Didn't know this

Thanks you so much - it help and now it's working

It is covered in the Official Help Section:

https://www.raspberrypi.org/documentati ... pdating.md