gkrellm freezes after upgrade to xenial

[Carlo Wood]

I have two PC's (connected through synergy), both run a gkrellm daemon and my main PC runs two instances of gkrellm to monitor stuff like CPU usage, network usage, temperatures etc.
This has worked for centuries. However, after I upgraded my main PC to xenial, the gkrellm clients stop getting graphically updated after having run for a day or so; nothing changes anymore after a while, as if they are dead. I don't think they are really dead because at certain window manager events I see a single update (ie, bringing them to the foreground), but the freeze is otherwise permanent until I restart the gkrellm clients, after which they work again for a day or so.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gkrellm 2.3.6~rc1-1build1
ProcVersionSignature: Ubuntu 4.4.0-57.78-generic 4.4.35
Uname: Linux 4.4.0-57-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
CurrentDesktop: KDE
Date: Mon Jan 23 22:08:34 2017
InstallationDate: Installed on 2016-01-11 (378 days ago)
InstallationMedia: Kubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
SourcePackage: gkrellm
UpgradeStatus: Upgraded to xenial on 2016-10-29 (86 days ago)