[Bug 1967753] Re: Ubuntu Jammy Desktop ISO installer fails to find live filesystem on Mac Pro 2012 (Mac 5, 1 Westmere)

[Paul White]

** Package changed: ubuntu => ubiquity (Ubuntu)

** Tags removed: installer

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https://bugs.launchpad.net/bugs/1967753

Title:
  Ubuntu Jammy Desktop ISO installer fails to find live filesystem on
  Mac Pro 2012 (Mac 5,1 Westmere)

Status in ubiquity package in Ubuntu:
  New

Bug description:
  I used a USB stick tool called Mac Linux USB loader to create a
  bootable USB stick so that I could install Ubuntu Jammy Desktop on my
  Mac Pro 5,1 Westmere (circa 2012). I was able to do the same
  installation and install Ubuntu Focal Desktop on my Mac Pro without
  issues, but the Ubuntu Jammy ISO would not get to the main installer.
  After getting past the GRUB menu and the Ubuntu splash screen, it
  fails with a screen full of messages saying:

  /init: line 49: can't open /dev/sr0: No medium found

  After this stream of messages, it asks to attempt interactive netboot:

  Unable to find a medium containing a live file system
  Attempt interactive netboot from a URL?
  yes no (default yes):
  Two methods available for IP configuration:
    * static: for static IP configuration
    * dhcp: for automatic IP configuration
  static dhcp (default: dhcp):
  [Asks for vlan ID and ISO URL, etc. ...]
  [Connects to cdimage.ubuntu.com and starts downloading jammy-live-server-amd64.iso ...]
  [Download completes ...]
  Unable to find a medium containing a live file system

  BusyBox v1.30.1 (Ubuntu 1:1.30.1-7ubuntu3) built-in shell (ash)
  Enter 'help for a list of built-in commands.

  (initramfs) ls /dev/sd*
  /dev/sdb1 /dev/sdb /dev/sda2 /dev/sda1 /dev/sda
  (initramfs) cat /proc/version_signature
  Ubuntu 5.15.0-23.23-generic 5.15.27

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