In elementaryOS Loki after a while the top bar suddenly freezes but everything else works (launcher, apps, etc.)

[Danel-dnl-93]

In elementaryOS Loki after a while the top bar suddenly freezes but everything else works (launcher, apps, etc.)

ProblemType: Bug
DistroRelease: elementary 0.4
Package: elementary-desktop 1.413+468~daily~ubuntu0.4.1 [origin: LP-PPA-elementary-os-daily]
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia wl
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CrashDB: elementary_meta
CurrentDesktop: Pantheon
Date: Fri Jul 29 18:59:19 2016
InstallationDate: Installed on 2016-07-29 (0 days ago)
InstallationMedia: elementary OS 0.4 "Loki" - Daily amd64 (20160716)
SourcePackage: elementary-meta
SuspiciousXErrors:

ThirdParty: True
UpgradeStatus: No upgrade log present (probably fresh install)

[Danel-dnl-93 (danel-dnl-93)]

After a bit of observation i found out that the wingpanel keeps my CPU at 100% during this freeze and it can be fixed only by opening gnomy-system-monitor and end the process.

[AlexFBP (alexfbp)]

One way i did to reproduce is to open VirtualBox, and use a vm in fullscreen mode. Generally after that or a time using in fullscreen, the bar freezes (holds the same date and time, don't let me to open the app selector/launcher --but sill opening with cmd+space--... none of the buttons responds) and consumes the 100% of any of the cores. Openend gnome-system-monitor to kill wingpanel.