Bug 358433 - All KDE apps lagg start
Summary: All KDE apps lagg start
Status: RESOLVED DUPLICATE of bug 356562
Alias: None
Product: kwin
Classification: Plasma
Component: general (show other bugs)
Version: 5.5.3
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-01-23 17:21 UTC by varlesh
Modified: 2016-01-23 17:29 UTC (History)
0 users

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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 ***