Bug 358433

Summary:	All KDE apps lagg start
Product:	[Plasma] kwin	Reporter:	varlesh <varlesh>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal
Priority:	NOR
Version:	5.5.3
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description varlesh 2016-01-23 17:21:47 UTC

All KDE applications start with lagg:
- show window decoration
- 1 sec delay
- window content

Bug preview:
http://i.imgur.com/KDxXAnq.jpg

Please see video preview bug ()compare with pacman-fm-qt:
https://youtu.be/HHTROuBL040

PC:
Dell 3721
CPU Intel Core i3-3217U
4 Gb RAM
GPU Intel HD4000

Distro:
Manjaro x86_64
KDE 5.5.3
Use : Open GL 3.1 with GLX (Option      "DRI"    "3" and Option "AccelMethod" "sna")

Reproducible: Always

Comment 1 Thomas Lübking 2016-01-23 17:29:58 UTC

Bug in Qt5, see https://bugreports.qt.io/browse/QTBUG-49931

Of course a client that requires a second to map a window is a problem by itsel, but the preview of the empty titlebar is because XSYNC is unconditionally disabled in Qt5

*** This bug has been marked as a duplicate of bug 356562 ***