Public bug reported: Live USB boot reaches grub but fails some time after and fails to completely boot on Macbook Pro 11,3 with Ubuntu 20.04.3
After selecting 'Ubuntu' or 'Ubuntu with safe graphics' the splash screen shows, and after a while the screen is filled with lines of `/init: line 49: can't open /dev/sdb: No medium found` with one line at the bottom of `Unable to find a medium container a live file system. Attempt interactive netboot from a URL?` Booting with debug option from grub does not give keyboard access. I have attached a photograph of the output at boot time to this ticket as extracting logs from the system does not seem possible. Full hardware specs of the exact model can be found here: https://everymac.com/systems/apple/macbook_pro/specs/macbook-pro- core-i7-2.5-15-dual-graphics-mid-2014-retina-display-specs.html The iso file used is ubuntu-20.04.3-desktop-amd64.iso The SHA256 of the downloaded iso file and MD5 sum of all files on the USB using the included md5um.txt have been confirmed OK. All USB ports on the machine, and multiple USB devices have been tested. The Live USB install boots to Ubuntu desktop when run from within a virtual machine under VMWare Player 16. ** Affects: ubuntu Importance: Undecided Status: New ** Attachment added: "debug boot output" https://bugs.launchpad.net/bugs/1955611/+attachment/5549222/+files/IMG_1720.JPG ** Description changed: Live USB boot reaches grub but fails some time after and fails to - completely boot on Macbook Pro 11,3 + completely boot on Macbook Pro 11,3 with Ubuntu 20.04.3 After selecting 'Ubuntu' or 'Ubuntu with safe graphics' the splash screen shows, and after a while the screen is filled with lines of `/init: line 49: can't open /dev/sdb: No medium found` with one line at the bottom of `Unable to find a medium container a live file system. Attempt interactive netboot from a URL?` Booting with debug option from grub does not give keyboard access. I have attached a photograph of the output at boot time to this ticket as extracting logs from the system does not seem possible. Full hardware specs of the exact model can be found here: https://everymac.com/systems/apple/macbook_pro/specs/macbook-pro- core-i7-2.5-15-dual-graphics-mid-2014-retina-display-specs.html + The iso file used is ubuntu-20.04.3-desktop-amd64.iso + The SHA256 of the downloaded iso file and MD5 sum of all files on the USB using the included md5um.txt have been confirmed OK. All USB ports on the machine, and multiple USB devices have been tested. The Live USB install boots to Ubuntu desktop when run from within a virtual machine under VMWare Player 16. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1955611 Title: Unable to boot Live USB on Mac To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1955611/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
