Suspend to ram stopped working reliably on XPS 9350

[Gionn]

Hi,

since installing intel-microcode 3.20180108.0+really20170707ubuntu16.04.1 the suspend to ram feature (triggered via GNOME ui) has stopped working reliably.

Problem arise during resume (e.g. opening laptop lid), when most of times (but not always) instead of getting my suspended session back I get the DELL logo, like in a standard boot session.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: intel-microcode 3.20180108.0+really20170707ubuntu16.04.1
ProcVersionSignature: Ubuntu 4.13.0-32.35~16.04.1-generic 4.13.13
Uname: Linux 4.13.0-32-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
CurrentDesktop: GNOME
Date: Wed Jan 31 09:28:43 2018
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-07-23 (557 days ago)
InstallationMedia: Ubuntu-GNOME 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160720)
SourcePackage: intel-microcode
UpgradeStatus: No upgrade log present (probably fresh install)

[Paulo (ptsneves)]

I can confirm that removing intel-microcode package restores suspending to ram functionality.
Also see: https://askubuntu.com/questions/967561/xps15-fails-to-suspends-after-upgrade-to-ubuntu-17-10

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.