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[Martin Wimpress <1541151@xxxxxxxxxxxxxxxxxx>]

** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

** No longer affects: ubuntu-mate

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https://bugs.launchpad.net/bugs/1541151

Title:
  16.04 PPC, unable to boot: "Problem Loading in-kernel X.509
  Certificate (-74)"

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I am not able to boot my  Power Mac 7,3 with the Ubuntu MATE 16.04
  daily-live iso.

  This has been the case since the 4.3.x kernel series and is now with
  current 4.4.x kernel. At the time the 4.2.x kernel was used **booting
  the iso went fine!**

  During the boot-process I get following error messages:

  "Problem Loading in-kernel X.509 Certificate (-74)"
  [...]
  mount: mounting /dev/sda10 on /cdrom failed: no such device
  stdin: not a typewriter
  mount: mounting /dev/sda9 on /cdrom failed: no such device
  mount: mounting /dev/sr0 on /cdrom failed: no such device
  [...]
  (initramfs) unable to find a medium containing a live file system

  The stdin: and mount: lines get repeated several 10 time. At last the
  boot process stops wuth the (initramfs) line, dropping me in a busybox
  shell.

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