[Bug 1508893] Re: TFTP timeout when booting from grub that was PXE loaded

[Launchpad Bug Tracker]

This bug was fixed in the package grub2 - 2.02~beta2-9ubuntu1.5

---------------
grub2 (2.02~beta2-9ubuntu1.5) trusty; urgency=medium

  * d/p/arm64-set-correct-length-of-device-path-end-entry.patch: Fixes
    booting arm64 kernels on certain UEFI implementations. (LP: #1476882)
  * progress: avoid NULL dereference for net files. (LP: #1459872)
  * arm64/setjmp: Add missing license macro. (LP: #1459871)
  * Cherry-pick patch to add SAS disks to the device list from the ofdisk
    module. (LP: #1517586)
  * Cherry-pick patch to open Simple Network Protocol exclusively.
    (LP: #1508893)

 -- dann frazier <dannf at ubuntu.com>  Wed, 25 Nov 2015 13:13:35 -0700

** Changed in: grub2 (Ubuntu Trusty)
       Status: Fix Committed => Fix Released

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to grub2 in Ubuntu.
https://bugs.launchpad.net/bugs/1508893

Title:
  TFTP timeout when booting from grub that was  PXE loaded

Status in grub2 package in Ubuntu:
  Fix Released
Status in grub2 source package in Trusty:
  Fix Released
Status in grub2 source package in Vivid:
  Fix Committed
Status in grub2 source package in Wily:
  Fix Committed

Bug description:
  [Impact]
  PXE booting of UEFI systems is very slow, to the point that some systems timeout.

  [Test Case]
  PXE boot a UEFI-based system (d-i or MAAS) and monitor the time it takes for GRUB to download the kernel/initrd. tcpdump will show TFTP timeouts, and it can take on the order of minutes to begin running the kernel.

  [Regression Risk]
  The fix is restricted to UEFI-based systems. For those systems, it could lead to a regression if Managed Network Protocol is required to remain active while GRUB is performing the network boot.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1508893/+subscriptions