Bug 395573

Summary:	Incorrect size starting in fullscreen
Product:	[Plasma] kwin	Reporter:	Rémi Denis-Courmont <remi>
Component:	core	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED WAITINGFORINFO
Severity:	normal	CC:	kde.org, kde, notuxius
Priority:	NOR	Flags:	mgraesslin: Wayland+ mgraesslin: X11-
Version First Reported In:	5.12.5
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Rémi Denis-Courmont 2018-06-18 18:31:01 UTC

When a Wayland surface with XDG top-level window role is brought to fullscreen before it has even been shown at all, then it seems that KWin reports an incorrect size in the ensuing xdg_toplevel.configure event.

This is reproducible with VLC.git as vlc -f VIDEO_FILE. Oddly, the problem does not occur if the window is taken to fullscreen after it has already been shown in windowed mode.

Comment 1 Alexander Mentyu 2018-06-20 17:55:55 UTC

I'm not seeing KWin xdg_toplevel.configure errors in console when starting VLC with '-f videofile' option

vlc-git 4.0.0-dev-3556-g34b1d4f1ee
Plasma: 5.13.1
Apps: 18.04.2
Frameworks: 5.47.0
Qt: 5.11.0
Kernel: 4.18.0-1-MANJARO
OS: Netrunner Rolling
Video: Intel 4400
Driver: xf86-video-intel 1:2.99.917+831+ge7bfc906-1
Mesa 3D: 18.1.2
Screen: 1600x900
Xorg: 1.20
Wayland: 1.15.0-1
Wayland Protocols: 1.14-1

Comment 2 Martin Flöser 2018-06-20 19:38:06 UTC

Please provide a long with WAYLAND_DEBUG environment variable.

Comment 3 David Edmundson 2018-06-20 20:29:53 UTC

Jonas spoke to me about this one just a few days ago.
We set the size to 0,0 in our configure event when maximised.

Although normally this means "client should do whatever" the docs for maximized say

> The window geometry specified in the configure event must be obeyed by the client.

There's a Qt workaround patch as we're not the only compositor doing this, but it's us doing it wrong. I started looking into a patch already.

Comment 4 Alexander Mentyu 2018-06-20 22:12:43 UTC

(In reply to Martin Flöser from comment #2)
> Please provide a long with WAYLAND_DEBUG environment variable.

https://paste.kde.org/pxtvhnyyc/skumns

Comment 5 kde.org 2021-11-06 21:17:44 UTC

This issue report is quite old. Can you please confirm, that it still persists with KDE 5.23?