Boot freezes when fault USB mass storage controller attached

Devices reports as USB device/ SCSI device. Ubuntu Plymouth hangs softlocks if this occurs but it appears to be a bug against a generic USB driver, so I'm filing against linux.

Unplugging the device causes Plymouth to resume. However since it did cause Ubuntu to freeze even in recovery mode according to bug reporting instructions I am filing against `linux` not `plymouth`.

Ideally if the device doesn't initialize there should be a timeout and some kind of blacklist that stops trying to access it, and continue with boot.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-155-generic 5.4.0-155.172
ProcVersionSignature: Ubuntu 5.4.0-155.172-generic 5.4.235
Uname: Linux 5.4.0-155-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.26
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-id', '/dev/snd/controlC2', '/dev/snd/pcmC2D0c', '/dev/snd/pcmC2D0p', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D11p', '/dev/snd/pcmC0D10p', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/by-path', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D2c', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CasperMD5CheckResult: skip
Date: Wed Aug 2 18:43:55 2023
InstallationDate: Installed on 2022-12-15 (230 days ago)
InstallationMedia: Ubuntu 18.04.6 LTS "Bionic Beaver" - Release amd64 (20210915)
MachineType: HP HP Pavilion Gaming Desktop TG01-0xxx
ProcEnviron:
 LANGUAGE=en_CA:en
 TERM=linux
 PATH=(custom, no user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-155-generic root=UUID=7e20054f-50f7-4011-8c9c-516960719274 ro recovery nomodeset dis_ucode_ldr
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-155-generic N/A
 linux-backports-modules-5.4.0-155-generic N/A
 linux-firmware 1.187.36
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/29/2021
dmi.bios.vendor: AMI
dmi.bios.version: F.31
dmi.board.name: 8643
dmi.board.vendor: HP
dmi.board.version: SMVB
dmi.chassis.type: 3
dmi.chassis.vendor: HP
dmi.modalias: dmi:bvnAMI:bvrF.31:bd03/29/2021:svnHP:pnHPPavilionGamingDesktopTG01-0xxx:pvr:rvnHP:rn8643:rvrSMVB:cvnHP:ct3:cvr:
dmi.product.family: 103C_53311M HP Pavilion Desktop PC
dmi.product.name: HP Pavilion Gaming Desktop TG01-0xxx
dmi.product.sku: 6YR66AA#ABL
dmi.sys.vendor: HP