Bug 459847

Summary:	Touchpad gestures (4 fingers up and down) lags horribly on WindowHeap-based effects
Product:	[Plasma] kwin	Reporter:	Moritz <bixilon>
Component:	Gestures	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	bixilon, kde, miranda, nate
Priority:	NOR
Version First Reported In:	master
Target Milestone:	---
Platform:	Other
OS:	Linux
See Also:	https://bugs.kde.org/show_bug.cgi?id=459845
Latest Commit:		Version Fixed/Implemented In:	6.0
Sentry Crash Report:

Description Moritz 2022-09-30 09:11:25 UTC

SUMMARY
The 4 finger touchpad gesture swiping up (like showing all activities and their windows) laggs horrible (like 1 fps). The other one (showing all windows, the one with the search bar) also laggs and party even freezes the system.

I can't even turn them off, please add an option for that too.

STEPS TO REPRODUCE
1. Swipe up or down

SOFTWARE/OS VERSION
SOperating System: KDE neon Unstable Edition
KDE Plasma Version: 5.26.80
KDE Frameworks Version: 5.99.0
Qt Version: 5.15.6
Kernel Version: 5.19.12-051912-generic (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 5500U with Radeon Graphics
Memory: 17.4 GiB of RAM
Graphics Processor: AMD RENOIR
Manufacturer: LENOVO
Product Name: 82KC
System Version: Lenovo V14 G2 ALC

Comment 1 Vlad Zahorodnii 2022-09-30 09:15:26 UTC

Is this a regression in comparison to 5.25? Did you update mesa recently?

Comment 2 David Edmundson 2022-09-30 09:21:17 UTC

Do you have similar performance issues using the shortcuts (control+f7)

Comment 3 Moritz 2022-09-30 09:45:54 UTC

No, I just thought somebody else will report that they are laggy, but when I update kde I update my whole system. They where always laggy.


Actually the animation is smoother with a key combination? (how does this happen?) But still, after the animation the whole screen hangs for a couple of 100ms. Then it works as before.

Comment 4 Nate Graham 2022-10-09 21:31:36 UTC

Can't reproduce.

Comment 5 Nate Graham 2022-10-09 21:32:48 UTC

See also Bug 459845; I suspect there is a GPU driver issue causing these issues.

Comment 6 Nate Graham 2024-03-25 02:27:07 UTC

This has been fixed in Plasma 6.