Can't restart display manager after boot Linux Mint 20.3

hefty_problems · Post by **hefty_problems** » Sun Aug 07, 2022 10:07 am

I'm using Linux Mint 20.3 on a Dell Precision 7760, and have been using it without issue for months now. I updated to the latest kernel available for Linux Mint 20.3 in the Update Manager, 5.14.0-1047oem, and a couple days later rebooted. I should mention the entire disk is encrypted using the disk encryption utility that Linux Mint offers during installaion.

After rebooting, I can only login to a text prompt. Selecting *any* recovery mode, including the oldest one I have installed which is 5.4.0-122, and decrypting when prompted , I am logged in but only to a text-only terminal such as you would get during Ctrl-Alt+F2.

Here are the details of my system that I got when I booted using a live session:

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System:    Kernel: 5.4.0-91-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 Desktop: Xfce 4.16.0 
           tk: Gtk 3.24.20 wm: xfwm4 dm: LightDM Distro: Linux Mint 20.3 Una 
           base: Ubuntu 20.04 focal 
Machine:   Type: Laptop System: Dell product: Precision 7760 v: N/A serial: <filter> Chassis: 
           type: 10 serial: <filter> 
           Mobo: Dell model: 086PC6 v: A01 serial: <filter> UEFI: Dell v: 1.8.0 date: 01/07/2022 
Battery:   ID-1: BAT0 charge: 95.0 Wh condition: 95.0/95.0 Wh (100%) volts: 12.6/11.4 
           model: SMP DELL 68ND31C serial: <filter> status: Full 
CPU:       Topology: 8-Core model: 11th Gen Intel Core i7-11850H bits: 64 type: MT MCP arch: N/A 
           L2 cache: 24.0 MiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 79872 
           Speed: 1353 MHz min/max: 800/4800 MHz Core speeds (MHz): 1: 3846 2: 3313 3: 3789 
           4: 2524 5: 4418 6: 1105 7: 801 8: 2496 9: 4723 10: 4285 11: 1764 12: 2013 13: 3471 
           14: 3606 15: 4310 16: 1097 
Graphics:  Device-1: Intel vendor: Dell driver: N/A bus ID: 0000:00:02.0 chip ID: 8086:9a60 
           Device-2: NVIDIA vendor: Dell driver: N/A bus ID: 0000:01:00.0 chip ID: 10de:24b7 
           Display: x11 server: X.Org 1.20.11 driver: fbdev unloaded: modesetting,vesa 
           resolution: 1920x1080~77Hz 
           OpenGL: renderer: llvmpipe (LLVM 12.0.0 256 bits) v: 4.5 Mesa 21.0.3 compat-v: 3.1 
           direct render: Yes 
Audio:     Device-1: Intel vendor: Dell driver: snd_hda_intel v: kernel bus ID: 0000:00:1f.3 
           chip ID: 8086:43c8 
           Device-2: NVIDIA driver: snd_hda_intel v: kernel bus ID: 0000:01:00.1 
           chip ID: 10de:228b 
           Sound Server: ALSA v: k5.4.0-91-generic 
Network:   Device-1: Intel Ethernet I219-LM vendor: Dell driver: N/A port: efa0 
           bus ID: 0000:00:1f.6 chip ID: 8086:15f9 
           Device-2: Intel driver: N/A port: 3000 bus ID: 0000:92:00.0 chip ID: 8086:2725 
Drives:    Local Storage: total: 975.56 GiB used: 3.40 GiB (0.3%) 
           ID-1: /dev/nvme0n1 vendor: SK Hynix model: PC711 NVMe 1TB size: 953.87 GiB 
           speed: 31.6 Gb/s lanes: 4 serial: <filter> 
           ID-2: /dev/sda type: USB vendor: A-Data model: USB Flash Drive size: 7.24 GiB 
           serial: <filter> 
           ID-3: /dev/sdb type: USB model: USB DISK 2.0 size: 14.45 GiB serial: <filter> 
RAID:      Hardware-1: Intel Volume Management Device NVMe RAID Controller driver: vmd v: 0.6 
           bus ID: 0000:00:0e.0 chip ID: 8086.9a0b 
Partition: ID-1: / size: 31.02 GiB used: 18.2 MiB (0.1%) fs: overlay source: ERR-102 
           ID-2: /var/log size: 5.11 GiB used: 31.1 MiB (0.6%) fs: ext4 dev: /dev/sda3 
USB:       Hub: 1-0:1 info: Full speed (or root) Hub ports: 1 rev: 2.0 chip ID: 1d6b:0002 
           Hub: 2-0:1 info: Full speed (or root) Hub ports: 4 rev: 3.1 chip ID: 1d6b:0003 
           Hub: 3-0:1 info: Full speed (or root) Hub ports: 16 rev: 2.0 chip ID: 1d6b:0002 
           Device-1: 3-3:2 info: Sunplus Innovation Integrated_Webcam_HD type: Video 
           driver: uvcvideo rev: 2.0 chip ID: 1bcf:28c4 
           Device-2: 3-5:3 info: Broadcom 58200 type: Smart Card driver: N/A rev: 2.0 
           chip ID: 0a5c:5842 
           Device-3: 3-9:4 info: A-DATA C008 Flash Drive type: Mass Storage driver: usb-storage 
           rev: 2.0 chip ID: 125f:c08a 
           Device-4: 3-11:5 info: Primax USB Optical Mouse type: Mouse driver: hid-generic,usbhid 
           rev: 2.0 chip ID: 0461:4dfb 
           Device-5: 3-13:7 info: Ritek USB DISK 2.0 type: Mass Storage driver: usb-storage 
           rev: 2.0 chip ID: 0b27:4300 
           Device-6: 3-14:6 info: Intel type: Bluetooth driver: N/A rev: 2.0 chip ID: 8087:0032 
           Hub: 4-0:1 info: Full speed (or root) Hub ports: 6 rev: 3.1 chip ID: 1d6b:0003 
Sensors:   System Temperatures: cpu: 37.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Repos:     Active apt repos in: /etc/apt/sources.list 
           1: deb cdrom:[Linux Mint 20.3 _Una_ - Release amd64 20220104]/ focal contrib main
           Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 
           1: deb http: //packages.linuxmint.com una main upstream import backport #id:linuxmint_main
           2: deb http: //archive.ubuntu.com/ubuntu focal main restricted universe multiverse
           3: deb http: //archive.ubuntu.com/ubuntu focal-updates main restricted universe multiverse
           4: deb http: //archive.ubuntu.com/ubuntu focal-backports main restricted universe multiverse
           5: deb http: //security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
           6: deb http: //archive.canonical.com/ubuntu/ focal partner
Info:      Processes: 308 Uptime: 1m Memory: 62.03 GiB used: 797.6 MiB (1.3%) Init: systemd v: 245 
           runlevel: 5 Compilers: gcc: 9.3.0 alt: 9 Client: Unknown python3.8 client inxi: 3.0.38

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Trying 'startx' gives:

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xinit: connection to X server lost
waiting for X server to shut down (II) Server terminated successfully (0). Closing log file.

Trying to reconfigure lightdm with

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sudo dpkg-reconfigure lightdm

takes me to a blue screen package configuration screen where I can choose between gdm or lightdm. Selecting either one just takes me right back to the same terminal prompt I came from. When I reboot, I am prompted to decrypt (it look like the normal gui-style prompt), but the Linux Mint logo just flashes and spins forever.