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[paranioid factoid <1837080@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Ubuntu Studio 19.04 (also experienced with Ubuntu-18.04.2LTS with Studio
Upgrade). Latest kernel 5.0.0-20 can't build an initialramfs due to
problems finding fonts or Plymouth objects. On reboot, system can't
start a display server. It loads, flashes, and then crashes, cycling
endlessly. Can't get into the system with a pseudotty due to the display
server cycling.

It seems to be a support package and not the kernel directly. I
downgrades the kernel to 5.0.0-13 by launching an installer USB and
mounting the root filesystem that way. chroot to the mount point and use
apt to purge the offending kernel directly. But the problem persisted.

I re-installed with Ubuntu Studio 19.04 and during install system
updates left the installer unable to write a boot record (because it
couldn't create an initialramfs).

Hardware:

AMD 1950x Threadripper
AMD VEGA FE
Samsung nvme boot disk
simple usb stick as install media.

I don't have log output or screen output as I couldn't cut and paste or
otherwise save it.

** Affects: ubuntustudio
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1837080

Title:
  Recent update causes boot failure

Status in Ubuntu Studio:
  New

Bug description:
  Ubuntu Studio 19.04 (also experienced with Ubuntu-18.04.2LTS with
  Studio Upgrade). Latest kernel 5.0.0-20 can't build an initialramfs
  due to problems finding fonts or Plymouth objects. On reboot, system
  can't start a display server. It loads, flashes, and then crashes,
  cycling endlessly. Can't get into the system with a pseudotty due to
  the display server cycling.

  It seems to be a support package and not the kernel directly. I
  downgrades the kernel to 5.0.0-13 by launching an installer USB and
  mounting the root filesystem that way. chroot to the mount point and
  use apt to purge the offending kernel directly. But the problem
  persisted.

  I re-installed with Ubuntu Studio 19.04 and during install system
  updates left the installer unable to write a boot record (because it
  couldn't create an initialramfs).

  Hardware:

  AMD 1950x Threadripper
  AMD VEGA FE
  Samsung nvme boot disk
  simple usb stick as install media.

  I don't have log output or screen output as I couldn't cut and paste
  or otherwise save it.

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