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[Stuart Bishop <1434136@xxxxxxxxxxxxxxxxxx>]

Still just those 4 lines using:

ro recovery nomodeset debug ignore_loglevel log_buf_len=10M
print_fatal_signals=1 LOGLEVEL=8 earlyprintk=efi,keep sched_debug
i915.modeset=0 nouveau.modeset=0

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https://bugs.launchpad.net/bugs/1434136

Title:
  HP Pavilion 13-b208tu fails to boot with F.26 bios, PSOD

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  While trying to fix Bug #1432659, I updated the HP Pavilion 13-b208tu
  bios to the latest available on the HP website (F.26). After the
  update, the laptop no longer boots Ubuntu 14.10 or Ubuntu 15.04
  (Ubuntu 15.04 from the hard drive, Ubuntu 14.10 using a LiveCD). The
  grub menu is available and works, the kernel loads, the initrd step
  works, and then it hangs hard and requires power cycling.

  The required information for a kernel bug report can be found in Bug
  #1432659, from the original shipped F.23 bios. I obviously can't
  attach information with the F.26 bios loaded.

  I can confirm that the bios update worked, and I have repeated it
  twice. HP diagnostics give the system a green light, and I can boot to
  FreeDOS as normal. I'll leave the system unbootable with the F.26 bios
  for a while in case someone can help me diagnose further from grub.

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