This bug was fixed in the package grub2 - 2.02~beta2-22ubuntu1.1
--------------- grub2 (2.02~beta2-22ubuntu1.1) vivid; urgency=medium
* Do not hang headless servers indefinitely on boot after edge case power failure timing (LP: #1443735). Instead, time out after 30 seconds and boot anyway, including on non-headless systems.
-- Robie Basak <email address hidden> Tue, 19 May 2015 13:47:00 +0100
This bug was fixed in the package grub2 - 2.02~beta2- 22ubuntu1. 1
--------------- 22ubuntu1. 1) vivid; urgency=medium
grub2 (2.02~beta2-
* Do not hang headless servers indefinitely on boot after edge case power
failure timing (LP: #1443735). Instead, time out after 30 seconds and boot
anyway, including on non-headless systems.
-- Robie Basak <email address hidden> Tue, 19 May 2015 13:47:00 +0100