Bug 334375

Summary: Black thumbnails in taskbar
Product: [Plasma] plasmashell Reporter: Rohan Garg <rohan>
Component: Task Manager and Icons-Only Task Manager widgetsAssignee: Eike Hein <hein>
Status: RESOLVED DUPLICATE    
Severity: normal CC: mgraesslin, notmart, rohan
Priority: NOR    
Version First Reported In: master   
Target Milestone: 1.0   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Rohan Garg 2014-05-05 13:06:13 UTC 
Seems like thumbnails for windows are broken, I see this in my terminal output :

plasma_shell(9320)/default QSGRenderContext::initialize: QSGContext::initialize: stencil buffer support missing, expect rendering errors
plasma_shell(9320)/default QSvgTinyDocument::draw: Couldn't find node shadow. Skipping rendering.
plasma_shell(9320)/default StatusNotifierItemSource::refreshCallback: DBusMenu disabled for this application
plasma_shell(9320)/default StatusNotifierItemSource::refreshCallback: DBusMenu disabled for this application
plasma_shell(9320)/default StatusNotifierItemSource::refreshCallback: DBusMenu disabled for this application
plasma_shell(9320)/default QXcbConnection::handleXcbError: QXcbConnection: XCB error: 3 (BadWindow), sequence: 3454, resource id: 0, major code: 142 (Unknown), minor code: 1
plasma_shell(9320)/default QXcbConnection::handleXcbError: QXcbConnection: XCB error: 9 (BadDrawable), sequence: 3455, resource id: 0, major code: 143 (Unknown), minor code: 1
plasma_shell(9320)/default QXcbConnection::handleXcbError: QXcbConnection: XCB error: 3 (BadWindow), sequence: 3456, resource id: 0, major code: 2 (ChangeWindowAttributes), minor code: 0


Reproducible: Always

Steps to Reproduce:
1. Hover over entry in taskbar
2. Window thumbnail is black




I'm on git hash 6d88ac8
Comment 1 Eike Hein 2014-05-05 13:09:47 UTC 
Probably a dupe of bug 334331 or bug 334241, CC'ing Martin.
Comment 2 Martin Flöser 2014-05-05 13:22:43 UTC 
the badWindow and BadDrawable errors are fixed as of 491befb8508095da3579409a5b81b0d96bb18a06 in plasma-framework.

I assume the root problem might be:
"QSGRenderContext::initialize: QSGContext::initialize: stencil buffer support missing, expect rendering errors" - not much we can do about that.
Comment 3 Marco Martin 2014-05-05 15:30:29 UTC 
may be duplicate of bug 334331 ?
Comment 4 Eike Hein 2014-05-05 15:32:21 UTC 
That's why I mentioned it in comment #1 :).
Comment 5 Rohan Garg 2014-05-06 10:01:42 UTC 
I cherry picked 491befb8508095da3579409a5b81b0d96bb18a06 and rebuilt my neon5 package with that patch and I still have the issue.
Comment 6 Martin Flöser 2014-05-06 10:22:21 UTC 
the bug sounds related to bug #334241
Comment 7 Martin Flöser 2014-05-09 14:24:40 UTC 

*** This bug has been marked as a duplicate of bug 334241 ***