Bug 388701 - Extremely slow scrolling applications and tearing.
Summary: Extremely slow scrolling applications and tearing.
Status: RESOLVED DUPLICATE of bug 358472
Alias: None
Product: plasmashell
Classification: Plasma
Component: Application Launcher (Kickoff) widget (show other bugs)
Version: 5.11.5
Platform: Arch Linux Linux
: NOR major
Target Milestone: 1.0
Assignee: David Edmundson
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-01-08 21:56 UTC by Lorenzo Murarotto
Modified: 2018-01-08 22:33 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

Attachments
Can see the tearing in kickoff. (400.45 KB, image/png)
2018-01-08 21:56 UTC, Lorenzo Murarotto 		Details
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Description Lorenzo Murarotto 2018-01-08 21:56:05 UTC 
Created attachment 109744 [details]
Can see the tearing in kickoff.

When I scroll applications with the mouse wheel (e.g. during a search) the scroll is extremely slow and I can see the top of the letters tear. I understand it could have something to do with libinput. Any other info just ask.

arch kernel    4.14.12-1-ARCH (64-bit)
KDE Plasma     5.11.5
KDE Frameworks 5.41.0 
Qt             5.10.0
libinput       1.9.4
Comment 1 David Edmundson 2018-01-08 22:33:37 UTC 
Yes it's something to do with QtXCB and libinput both being too smart for their own good. (that also is what gets the y between pixels which is your "tearing".)

*** This bug has been marked as a duplicate of bug 358472 ***