XorgLogOld.txt is showing that Xorg crashed. If that's a recurring issue
then it might explain this bug.

It looks most likely to be bug 1811023 which is also the most common
Xorg crash globally for Ubuntu right now. It also seems to mostly affect
Nvidia users.

Please reproduce the issue a few more times and if you keep seeing Xorg
crashes like:

[     4.932] (EE) Backtrace:
[     4.932] (EE) 0: /usr/lib/xorg/Xorg (OsLookupColor+0x13c) [0x55ac57b32aec]
[     4.933] (EE) 1: /lib/x86_64-linux-gnu/libpthread.so.0 (funlockfile+0x60) 
[0x7f2b8ea073c0]
[     4.933] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (gsignal+0xcb) 
[0x7f2b8e84418b]
[     4.933] (EE) 3: /lib/x86_64-linux-gnu/libc.so.6 (abort+0x12b) 
[0x7f2b8e823859]
[     4.934] (EE) unw_get_proc_name failed: no unwind info found [-10]
[     4.934] (EE) 4: /lib/x86_64-linux-gnu/libc.so.6 (?+0x0) [0x7f2b8e823729]
[     4.934] (EE) 5: /lib/x86_64-linux-gnu/libc.so.6 (__assert_fail+0x46) 
[0x7f2b8e834f36]
[     4.934] (EE) 6: /usr/lib/xorg/Xorg (dixRegisterPrivateKey+0x239) 
[0x55ac579efb39]
[     4.934] (EE) 7: /usr/lib/xorg/modules/libglamoregl.so (glamor_init+0xcf) 
[0x7f2a0961b37f]

or log messages like:

privates.c:384: dixRegisterPrivateKey: Assertion
`!global_keys[type].created' failed.

then this is bug 1811023.

** Package changed: gdm3 (Ubuntu) => xorg-server (Ubuntu)

** Changed in: xorg-server (Ubuntu)
       Status: New => Incomplete

** Changed in: nvidia-graphics-drivers-510 (Ubuntu)
       Status: New => Incomplete

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1960868

Title:
  Dell Precision 5520 boots to the wrong VT (black screen)

Status in nvidia-graphics-drivers-510 package in Ubuntu:
  Incomplete
Status in xorg-server package in Ubuntu:
  Incomplete

Bug description:
  I have several Dell Laptops model Precision 5520. Ubuntu LTS 20.04.2
  seems to run fine without issues.  After do a software update which
  appears to update to LTS 20.04.3, the laptops no longer boot properly.
  I end up at a black screen with an underscore cursor blinking at the
  upper left.  If I then hold the Alt key down and click the right arrow
  a few times followed by the left arrow a few times, eventually I see
  the normal GUI login screen and I can log in.

  Please let me know if there is anything that can be done to avoid this
  problem.  I have tried on several Dell laptops and I get the same
  behavior on all of them.  There seems to be something broken in Ubuntu
  20.04.3 for these lapotops.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: xorg 1:7.7+19ubuntu14
  ProcVersionSignature: Ubuntu 5.13.0-28.31~20.04.1-generic 5.13.19
  Uname: Linux 5.13.0-28-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  .proc.driver.nvidia.capabilities.gpu0: Error: path was not a regular file.
  .proc.driver.nvidia.capabilities.mig: Error: path was not a regular file.
  .proc.driver.nvidia.gpus.0000.01.00.0: Error: path was not a regular file.
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.suspend: suspend hibernate resume
  .proc.driver.nvidia.suspend_depth: default modeset uvm
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86_64 Kernel Module  510.47.03  Mon Jan 24 
22:58:54 UTC 2022
   GCC version:
  ApportVersion: 2.20.11-0ubuntu27.21
  Architecture: amd64
  BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
  CasperMD5CheckResult: skip
  CompositorRunning: None
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Feb 14 14:37:36 2022
  DistUpgraded: Fresh install
  DistroCodename: focal
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation HD Graphics 630 [8086:591b] (rev 04) (prog-if 00 [VGA 
controller])
     Subsystem: Dell HD Graphics 630 [1028:07bf]
     Subsystem: Dell GM107GLM [Quadro M1200 Mobile] [1028:07bf]
  InstallationDate: Installed on 2022-02-14 (0 days ago)
  InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 
(20210209.1)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 003: ID 04f3:24a0 Elan Microelectronics Corp. Touchscreen
   Bus 001 Device 002: ID 8087:0a2b Intel Corp. 
   Bus 001 Device 004: ID 0c45:6713 Microdia Integrated_Webcam_HD
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Dell Inc. Precision 5520
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.13.0-28-generic 
root=UUID=58eb98db-d059-4fbb-8a18-0c258fd3ab72 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  Title: Xorg freeze
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/21/2020
  dmi.bios.release: 1.20
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.20.0
  dmi.board.name: 0R6JFH
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.asset.tag: 1203062
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.20.0:bd07/21/2020:br1.20:svnDellInc.:pnPrecision5520:pvr:rvnDellInc.:rn0R6JFH:rvrA00:cvnDellInc.:ct10:cvr:sku07BF:
  dmi.product.family: Precision
  dmi.product.name: Precision 5520
  dmi.product.sku: 07BF
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.107-8ubuntu1~20.04.1
  version.libgl1-mesa-dri: libgl1-mesa-dri 21.2.6-0ubuntu0.1~20.04.1
  version.libgl1-mesa-glx: libgl1-mesa-glx N/A
  version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.20.13-1ubuntu1~20.04.2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20200226-1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

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