Bug 421806

Summary: Some Application is not working when I am using VirtualBox or VMware for some time. "Maximum number of clients reachedqt.qpa.xcb: could not connect to display :0"
Product: [Frameworks and Libraries] frameworks-frameworkintegration Reporter: cody.hxlo
Component: generalAssignee: kdelibs bugs <kdelibs-bugs-null>
Status: RESOLVED NOT A BUG    
Severity: normal    
Priority: NOR    
Version First Reported In: 5.68.0   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description cody.hxlo 2020-05-20 05:11:16 UTC 
SUMMARY
Some Application is not working when I am using VirtualBox or VMware for some time. 
Must reboot to resolve

STEPS TO REPRODUCE
1. Open VirtualBox(1.6.1) or VMware(15.5.2)  ( with 3D accelerate)
2. Wait for some time 
3. open "elisa" or other application,it is not working.

OBSERVED RESULT
$ elisa
Maximum number of clients reachedqt.qpa.xcb: could not connect to display :0
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: dxcb, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.

fish: “elisa” terminated by signal SIGABRT (Abort)


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 5.4.0-32
(available in About System)
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8

ADDITIONAL INFORMATION
Comment 1 cody.hxlo 2020-05-20 05:18:55 UTC 
$ vlc
VLC media player 3.0.9.2 Vetinari (revision 3.0.9.2-0-gd4c1aefe4d)
Maximum number of clients reached[0000560c47837320] main interface error: no suitable interface module
[0000560c4774e5c0] main libvlc error: interface "globalhotkeys,none" initialization failed
$ plasma-discover
Maximum number of clients reachedqt.qpa.xcb: could not connect to display :0
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: dxcb, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.

fish: “plasma-discover” terminated by signal SIGABRT (Abort)

$
Comment 2 cody.hxlo 2020-05-20 10:54:51 UTC 
Beacuse I have too many QT process.