Comment 18 for bug 1872159

Steps to reproduce
This result was consistent after five different installs.

Outcome
I'm having the same issue, after install I shut down remove the usb it will boot the first time to login screen no problem, after a second shut down or restart it hangs at the spinning arrow.

Expected Outcome
Smooth start up with boot splash to login screen.

Workaround
Tap the F8 key before boot splash appears, continue to tap F8 when scrolling text appears, it then continues to login screen.

Temporary Fix
Remove "quiet splash" from /etc/default/grub - GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

Result
Scrolling text on startup, however a very quick boot to login screen, no hanging.

System info taken from gnome-initial-setup
{
  "Version": "20.04",
  "BIOS": {
    "Vendor": "American Megatrends Inc.",
    "Version": "KYSKLi70.86A.0037.2016.0603.1032"
  },
  "CPU": {
    "OpMode": "32-bit, 64-bit",
    "CPUs": "8",
    "Threads": "2",
    "Cores": "4",
    "Sockets": "1",
    "Vendor": "GenuineIntel",
    "Family": "6",
    "Model": "94",
    "Stepping": "3",
    "Name": "Intel(R) Core(TM) i7-6770HQ CPU @ 2.60GHz",
    "Virtualization": "VT-x"
  },
  "Arch": "amd64",
  "GPU": [
    {
      "Vendor": "8086",
      "Model": "193b"
    }
  ],
  "RAM": 32.8,
  "Partitions": [
    230.5,
    0.5
  ],
  "Screens": [
    {
      "Size": "509mmx286mm",
      "Resolution": "1920x1080",
      "Frequency": "60.00"
    },
    {
      "Size": "477mmx268mm",
      "Resolution": "1920x1080",
      "Frequency": "60.00"
    }
  ],
  "Autologin": false,
  "LivePatch": false,
  "Session": {
    "DE": "ubuntu:GNOME",
    "Name": "ubuntu",
    "Type": "x11"
  },
  "Language": "en_AU",
  "Timezone": "Australia/Perth",
  "Install": {
    "Media": "Ubuntu 20.04 LTS \"Focal Fossa\" - Release amd64 (20200423)",
    "Type": "GTK",
    "OEM": false,
    "PartitionMethod": "manual",
    "DownloadUpdates": true,
    "Language": "en",
    "Minimal": false,
    "RestrictedAddons": true,
    "Stages": {
      "0": "language",
      "10": "console_setup",
      "13": "prepare",
      "22": "partman",
      "34": "partman",
      "35": "partman",
      "50": "partman",
      "51": "partman",
      "67": "partman",
      "106": "partman",
      "110": "start_install",
      "124": "timezone",
      "181": "usersetup",
      "204": "user_done",
      "409": "done"
    }
  }
}