Error in `gnome-panel': munmap_chunk(): invalid pointer: 0x00000000027512cd

[Thomas Mayer]

Gnome desktop crashes after resuming from suspend to ram.

With the log files attached, the scenario was:

- s2ram'ed laptop with closed lid attached to docking station (dual monitor setup)
- Press power button on docking station (with lid still closed) -> Laptop resumes
- Press undocking button on docking station (with lid still closed) -> Laptop suspends to RAM (which is in itself unexpected but not subject of this issue)
- Open laptop's lid -> Laptop resumes
- Result: Screen flackering, wrong screen resolution, screen partly visible without login. Then it seems as if the gnome desktop crashes after a few seconds. Then comes a clean login window while the old gnome session has gone, including all open applications (-> data loss).

I'm not sure if the dual monitor plays a role or the docking station or if this is just a random fault when resuming from s2ram. Whatever it is, I have seen this multiple times now with 16.04. I did not have these issues with later versions of 14.04 with HES-kernel 4.2.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gnome-session-bin 3.18.1.2-1ubuntu1.16.04.1
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: GNOME-Flashback:Unity
Date: Sat Jul 30 23:03:59 2016
InstallationDate: Installed on 2014-11-29 (609 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
SourcePackage: gnome-session
UpgradeStatus: Upgraded to xenial on 2016-06-15 (45 days ago)