Bug 411996

Summary: Task switcher shows only large icon except when triggering from system settings
Product: [Applications] systemsettings Reporter: Nils <bugs.kde.org.trustful938>
Component: generalAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED FIXED    
Severity: normal CC: kde
Priority: NOR    
Version First Reported In: 5.16.5   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: getting only icons instead of window thumbnail
The status of my compositor

Description Nils 2019-09-17 13:55:59 UTC
Created attachment 122693 [details]
getting only icons instead of window thumbnail

I tried without any success to have a nice task switcher showing windows thumbnail but for a reason I ignore I only got icons. Cf. attachment. 
However I have the right design from the task switcher from system settings -> windows management -> task switcher -> main -> Visualization -> Breeze preview.

SOFTWARE/OS VERSIONS
KDE Plasma Version:        5.16.5
KDE Frameworks Version:    5.62.0
Qt Version:                5.13.1
Kernel Version:            5.2.14-arch2-1-ARCH
OS Type:                   64-bit
Comment 1 Kai Uwe Broulik 2019-09-17 13:59:23 UTC
Do you have Compositing enabled? Hit Ctrl+Shift+F12 and/or check in System Settings → Display → Compositor.
Comment 2 Nils 2019-09-17 14:01:46 UTC
Created attachment 122694 [details]
The status of my compositor

I am not sure compositor is enabled...
Comment 3 Nils 2019-09-17 14:05:11 UTC
Yes! That was the reason. I got a crash as showed in my other attachment. Confirming on the pop-up the activation and login again make it works! 
Thanks, plasma is awesome!

Maybe having a notification for the user about an anomaly for the compositor would be great?