Public bug reported:

Actually this is not the version that freezes the boot. With a clean
install both of groovy and focal I can use the computer with no problem.
The bug appears after installing the prompted updates at first login.

I have three different outcomes when it comes to booting:
- Blinking underscore cursor (with no error messages on the screen)
- iwlwifi unhandled algorithm 0x707 error
- FAULT found at 00000000 [IBUS] not exactly this message

I guess I could install updates one by one and see which one faults at
boot, then boot through tty4 (it is the only way I've found to do it
after boot fails, or freezes) and then link the logs to this  issue.

I could really use some guidance from a more experienced user because I
don't really know how to debug this things :D

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: xorg 1:7.7+19ubuntu15
ProcVersionSignature: Ubuntu 5.8.0-48.54-generic 5.8.18
Uname: Linux 5.8.0-48-generic x86_64
ApportVersion: 2.20.11-0ubuntu50.5
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr  9 08:51:36 2021
DistUpgraded: Fresh install
DistroCodename: groovy
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GpuHangFrequency: Continuously
GpuHangReproducibility: Occurs more often under certain circumstances
GpuHangStarted: Immediately after installing this version of Ubuntu
GraphicsCard:
 Intel Corporation UHD Graphics [8086:9a49] (rev 01) (prog-if 00 [VGA 
controller])
   Subsystem: Dell UHD Graphics [1028:09d9]
   Subsystem: Dell GP107M [GeForce MX350] [1028:09d9]
InstallationDate: Installed on 2021-04-08 (0 days ago)
InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
MachineType: Dell Inc. Inspiron 7400
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-48-generic 
root=UUID=b912e5af-f189-4002-8e26-306f96626d10 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/26/2021
dmi.bios.release: 1.5
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.5.1
dmi.board.name: 072W08
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvr1.5.1:bd02/26/2021:br1.5:svnDellInc.:pnInspiron7400:pvr:rvnDellInc.:rn072W08:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Inspiron
dmi.product.name: Inspiron 7400
dmi.product.sku: 09D9
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.102-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 20.2.1-1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.9-2ubuntu1.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20200714-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

** Affects: ubuntu
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug freeze groovy ubuntu

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https://bugs.launchpad.net/bugs/1923140

Title:
  Xorg freeze

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