Raspberry Pi OS • upgrade and no screen on vnc connect

Code:

pi@e-pi3:~ $ cat /etc/apt/sources.listdeb http://raspbian.raspberrypi.org/raspbian/ bookworm main contrib non-free rpi# Uncomment line below then 'apt-get update' to enable 'apt-get source'#deb-src http://raspbian.raspberrypi.org/raspbian/ bookworm main contrib non-free rpipi@e-pi3:~ $

Code:

pi@e-pi3:~ $ cat /etc/apt/sources.list.d/raspi.listdeb http://archive.raspberrypi.org/debian/ bookworm main# Uncomment line below then 'apt-get update' to enable 'apt-get source'#deb-src http://archive.raspberrypi.org/debian/ bookworm main uipi@e-pi3:~ $

Code:

pi@e-pi3:~ $ lsb_release -aNo LSB modules are available.Distributor ID: RaspbianDescription:    Raspbian GNU/Linux 12 (bookworm)Release:        12Codename:       bookwormpi@e-pi3:~ $

Code:

pi@e-pi3:~ $ xrandrCan't open displaypi@e-pi3:~ $

Code:

pi@e-pi3:~ $ lsb_release -aNo LSB modules are available.Distributor ID: RaspbianDescription:    Raspbian GNU/Linux 12 (bookworm)Release:        12Codename:       bookwormpi@e-pi3:~ $ echo $XDG_CURRENT_DESKTOPpi@e-pi3:~ $ echo $XDG_SESSION_DESKTOPpi@e-pi3:~ $ ls -l /usr/share/*sessions/total 12-rw-r--r-- 1 root root   86 11 janv.  2022 lightdm-xsession.desktop-rw-r--r-- 1 root root 1507 22 févr.  2021 LXDE.desktop-rw-r--r-- 1 root root  198  9 févr.  2023 openbox.desktoppi@e-pi3:~ $

Code:

pi@e-pi3:~ $ dpkg -l | grep vncii  realvnc-vnc-server                    7.13.1.57                               armhf        VNC® Serverpi@e-pi3:~ $

Code:

pi@e-pi3:~ $ sudo dmesg | grep err[    0.000000] OF: fdt: Machine model: Raspberry Pi 3 Model B Rev 1.2[    0.060037] raspberrypi-firmware soc:firmware: Attached to firmware from 2023-03-17T10:53:00, variant start_cd[    0.070046] raspberrypi-firmware soc:firmware: Firmware hash is 82f3750a65fadae9a38077e3c2e217ad158c8d54[    3.137723] Periodic Transfer Interrupt Enhancement - disabled[    3.137810] Multiprocessor Interrupt Enhancement - disabled               Interrupt/Control Split Transaction hack enabled[    3.202842] sdhci: Copyright(c) Pierre Ossmanpi@e-pi3:~ $

Code:

pi@e-pi3:~ $ journalctl  --no-pager -b -p erraoût 18 13:18:34 e-pi3 systemd[1]: systemd-networkd.socket: Socket service systemd-networkd.service not loaded, refusing.août 18 13:18:34 e-pi3 systemd[1]: Failed to listen on systemd-networkd.socket - Network Service Netlink Socket.août 18 13:18:34 e-pi3 systemd-modules-load[148]: Failed to find module 'lp'août 18 13:18:34 e-pi3 systemd-modules-load[148]: Failed to find module 'ppdev'août 18 13:18:34 e-pi3 systemd-modules-load[148]: Failed to find module 'parport_pc'août 18 13:18:36 e-pi3 kernel: vc_sm_cma_vchi_init: failed to open VCHI service (-1)août 18 13:18:36 e-pi3 kernel: [vc_sm_connected_init]: failed to initialize shared memory serviceaoût 18 13:18:37 e-pi3 kernel: bcm2835_mmal_vchiq: Failed to open VCHI service connection (status=-1)août 18 13:18:37 e-pi3 kernel: bcm2835_mmal_vchiq: Failed to open VCHI service connection (status=-1)août 18 13:18:37 e-pi3 kernel: bcm2835_mmal_vchiq: Failed to open VCHI service connection (status=-1)août 18 13:18:44 e-pi3 ntpd[656]: CONFIG: restrict nopeer ignoredaoût 18 13:18:44 e-pi3 ntpd[656]: IO: bind(21) AF_INET6 fe80::90d6:31d4:9f1b:4fa5%2#123 flags 0x1 failed: Cannot assign requested addressaoût 18 13:18:44 e-pi3 ntpd[656]: IO: unable to create socket on enxb827eb448193 (5) for fe80::90d6:31d4:9f1b:4fa5%2#123août 18 13:18:44 e-pi3 ntpd[656]: statistics directory /var/log/ntpsec/ does not exist or is unwriteable, error No such file or directoryaoût 18 13:20:15 e-pi3 systemd[1]: Timed out waiting for device dev-dri-card0.device - /dev/dri/card0.août 18 13:20:15 e-pi3 systemd[1]: Timed out waiting for device dev-dri-renderD128.device - /dev/dri/renderD128.août 18 13:20:15 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:20:16 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:20:16 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:20:17 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:20:17 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:20:18 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.pi@e-pi3:~ $

Code:

pi@e-pi3:~ $ systemctl status lightdm× lightdm.service - Light Display Manager     Loaded: loaded (/lib/systemd/system/lightdm.service; enabled; preset: enabled)     Active: failed (Result: exit-code) since Mon 2025-08-18 13:20:18 CEST; 12min ago       Docs: man:lightdm(1)    Process: 1108 ExecStart=/usr/sbin/lightdm (code=exited, status=1/FAILURE)   Main PID: 1108 (code=exited, status=1/FAILURE)        CPU: 78msaoût 18 13:20:18 e-pi3 systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 5.août 18 13:20:18 e-pi3 systemd[1]: Stopped lightdm.service - Light Display Manager.août 18 13:20:18 e-pi3 systemd[1]: lightdm.service: Start request repeated too quickly.août 18 13:20:18 e-pi3 systemd[1]: lightdm.service: Failed with result 'exit-code'.août 18 13:20:18 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:20:18 e-pi3 systemd[1]: lightdm.service: Triggering OnFailure= dependencies.pi@e-pi3:~ $

Code:

pi@e-pi3:~ $ sudo systemctl restart lightdmJob for lightdm.service failed because the control process exited with error code.See "systemctl status lightdm.service" and "journalctl -xeu lightdm.service" for details.pi@e-pi3:~ $ journalctl | grep lightdmaoût 18 13:20:15 e-pi3 systemd[1]: Starting lightdm.service - Light Display Manager...août 18 13:20:15 e-pi3 systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILUREaoût 18 13:20:15 e-pi3 systemd[1]: lightdm.service: Failed with result 'exit-code'.août 18 13:20:15 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:20:16 e-pi3 systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 1.août 18 13:20:16 e-pi3 systemd[1]: Stopped lightdm.service - Light Display Manager.août 18 13:20:16 e-pi3 systemd[1]: Starting lightdm.service - Light Display Manager...août 18 13:20:16 e-pi3 systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILUREaoût 18 13:20:16 e-pi3 systemd[1]: lightdm.service: Failed with result 'exit-code'.août 18 13:20:16 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:20:16 e-pi3 systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 2.août 18 13:20:16 e-pi3 systemd[1]: Stopped lightdm.service - Light Display Manager.août 18 13:20:16 e-pi3 systemd[1]: Starting lightdm.service - Light Display Manager...août 18 13:20:16 e-pi3 systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILUREaoût 18 13:20:16 e-pi3 systemd[1]: lightdm.service: Failed with result 'exit-code'.août 18 13:20:16 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:20:17 e-pi3 systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 3.août 18 13:20:17 e-pi3 systemd[1]: Stopped lightdm.service - Light Display Manager.août 18 13:20:17 e-pi3 systemd[1]: Starting lightdm.service - Light Display Manager...août 18 13:20:17 e-pi3 systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILUREaoût 18 13:20:17 e-pi3 systemd[1]: lightdm.service: Failed with result 'exit-code'.août 18 13:20:17 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:20:17 e-pi3 systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 4.août 18 13:20:17 e-pi3 systemd[1]: Stopped lightdm.service - Light Display Manager.août 18 13:20:17 e-pi3 systemd[1]: Starting lightdm.service - Light Display Manager...août 18 13:20:17 e-pi3 systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILUREaoût 18 13:20:17 e-pi3 systemd[1]: lightdm.service: Failed with result 'exit-code'.août 18 13:20:17 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:20:18 e-pi3 systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 5.août 18 13:20:18 e-pi3 systemd[1]: Stopped lightdm.service - Light Display Manager.août 18 13:20:18 e-pi3 systemd[1]: lightdm.service: Start request repeated too quickly.août 18 13:20:18 e-pi3 systemd[1]: lightdm.service: Failed with result 'exit-code'.août 18 13:20:18 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:20:18 e-pi3 systemd[1]: lightdm.service: Triggering OnFailure= dependencies.août 18 13:39:49 e-pi3 sudo[1558]:       pi : TTY=pts/1 ; PWD=/home/pi ; USER=root ; COMMAND=/usr/bin/systemctl restart lightdmaoût 18 13:39:49 e-pi3 systemd[1]: Starting lightdm.service - Light Display Manager...août 18 13:39:49 e-pi3 systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILUREaoût 18 13:39:49 e-pi3 systemd[1]: lightdm.service: Failed with result 'exit-code'.août 18 13:39:49 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:39:50 e-pi3 systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 1.août 18 13:39:50 e-pi3 systemd[1]: Stopped lightdm.service - Light Display Manager.août 18 13:39:50 e-pi3 systemd[1]: Starting lightdm.service - Light Display Manager...août 18 13:39:50 e-pi3 systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILUREaoût 18 13:39:50 e-pi3 systemd[1]: lightdm.service: Failed with result 'exit-code'.août 18 13:39:50 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:39:50 e-pi3 systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 2.août 18 13:39:50 e-pi3 systemd[1]: Stopped lightdm.service - Light Display Manager.août 18 13:39:50 e-pi3 systemd[1]: Starting lightdm.service - Light Display Manager...août 18 13:39:50 e-pi3 systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILUREaoût 18 13:39:50 e-pi3 systemd[1]: lightdm.service: Failed with result 'exit-code'.août 18 13:39:50 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:39:50 e-pi3 systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 3.août 18 13:39:50 e-pi3 systemd[1]: Stopped lightdm.service - Light Display Manager.août 18 13:39:50 e-pi3 systemd[1]: Starting lightdm.service - Light Display Manager...août 18 13:39:50 e-pi3 systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILUREaoût 18 13:39:50 e-pi3 systemd[1]: lightdm.service: Failed with result 'exit-code'.août 18 13:39:50 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:39:51 e-pi3 systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 4.août 18 13:39:51 e-pi3 systemd[1]: Stopped lightdm.service - Light Display Manager.août 18 13:39:51 e-pi3 systemd[1]: Starting lightdm.service - Light Display Manager...août 18 13:39:51 e-pi3 systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILUREaoût 18 13:39:51 e-pi3 systemd[1]: lightdm.service: Failed with result 'exit-code'.août 18 13:39:51 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:39:51 e-pi3 systemd[1]: lightdm.service: Scheduled restart job, restart counter is at 5.août 18 13:39:51 e-pi3 systemd[1]: Stopped lightdm.service - Light Display Manager.août 18 13:39:51 e-pi3 systemd[1]: lightdm.service: Start request repeated too quickly.août 18 13:39:51 e-pi3 systemd[1]: lightdm.service: Failed with result 'exit-code'.août 18 13:39:51 e-pi3 systemd[1]: Failed to start lightdm.service - Light Display Manager.août 18 13:39:51 e-pi3 systemd[1]: lightdm.service: Triggering OnFailure= dependencies.pi@e-pi3:~ $