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[Stephen Fenwick <stephen@xxxxxxxxxxxxxxxxxx>]

Results are:

Ubuntu Desktop 15.04:
 - Default kernel: boots successfully
 - Wiley kernel from above link boots to desktop but mouse and keyboard are unresponsive. I think this is an unrelated issue. I only installed the kernel image .deb file (using dpkg -i) so I'm not 100% sure if this is a valid test. Adding other packages may get the mouse and keyboard working but might also trigger the hang.

Ubuntu Desktop 15.10 (upgraded from 15.04):
 - Default kernel: hangs on startup
 - Kernel 3.19.0-31-generic (left over from the upgrade): boots successfully

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https://bugs.launchpad.net/bugs/1512995

Title:
  Desktop 15.10 live image doesn't boot

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  The Ubuntu Desktop 15.10 live image fails to boot from USB on an Intel
  NUC5PPYH (N3700 CPU - details here
  http://www.intel.com/content/www/us/en/nuc/nuc-kit-nuc5ppyh.html)

  During the normal boot process it hangs on the splash screen. Booting in console mode gives an error:
   - NMI watchdog: BUG: soft lockup - CPU#3 stuck for 23s! [systemd-udevd:1165]

  A photo of the console boot screen showing this error is here:
  https://www.dropbox.com/s/ax6j2dbedqpwbrb/IMG_20151104_213045.jpg?dl=0

  I am happy to follow instructions to get more detailed logging, but am
  not currently clear how to do this at this point in the boot process.

  Ubuntu Desktop 15.04 installs successfully.
  This bug is still present in Ubuntu Desktop 16.04 nightly

  The BIOS settings on this device include an option for "Operating
  System" with values "Windows 7", "Windows 8.x/10" and "Linux". Setting
  this to "Linux" enables Ubuntu to boot, and Windows 10 seems to run OK
  too. This provides a workaround for now but isn't completely
  satisfactory as Windows 10 is probably not supported on the device in
  this mode, and this may cause problems I haven't found yet.

  I would expect that 15.10 runs with the BIOS in "Windows" mode the
  same as 15.04.

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