Comment 0 for bug 1491615

When performing an update using ubuntu's default GUI tool, during the "configuring shim-signed" message, the computer freezes and needs to be reset. Unfortunately, there is nothing in the system log except for corruption (a lot of null bytes). But I experience these hard freezes regularly, whenever a GRUB or EFI related package is being updated, always during postinstall.

[ 0.000000] efi: EFI v2.31 by American Megatrends
[ 0.000000] efi: ESRT=0xd9f7f998 ACPI=0xd8f97000 ACPI 2.0=0xd8f97000 SMBIOS=0xf04d0 MPS=0xfd510
[ 0.000000] esrt: Reserving ESRT space from 0x00000000d9f7f998 to 0x00000000d9f7f9d0.
[ 0.000000] SMBIOS 2.8 present.
[ 0.000000] DMI: MSI MS-7817/CSM-B85M-E45 (MS-7817), BIOS V10.9 04/21/2015
Linux kiste 3.19.0-26-generic #28~14.04.1-Ubuntu SMP Wed Aug 12 14:09:17 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

This bug exists and keeps reappearing since I originally installed Ubuntu 14.04. However, for some reason it does not happen with a very similar second machine. This machine does not load the 'efi' kernel module on boot, can this be the reason?

[ 0.000000] SMBIOS 2.8 present.
[ 0.000000] DMI: MSI MS-7817/H81M-P33 (MS-7817), BIOS V1.5 05/30/2014
Linux desktop 3.19.0+ #6 SMP Sat Feb 21 20:08:01 CET 2015 x86_64 x86_64 x86_64 GNU/Linux

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: shim-signed 1.9+0.8-0ubuntu2
ProcVersionSignature: Ubuntu 3.19.0-26.28~14.04.1-generic 3.19.8-ckt4
Uname: Linux 3.19.0-26-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.12
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Sep 2 09:33:16 2015
SourcePackage: shim-signed
UpgradeStatus: No upgrade log present (probably fresh install)