https://bugs.documentfoundation.org/show_bug.cgi?id=152911
Bug ID: 152911
Summary: VIEWING - High CPU and lag when scrolling on Wayland
Product: LibreOffice
Version: 7.4.3.2 release
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Writer
Assignee: [email protected]
Reporter: [email protected]
Description:
When using KDE Wayland on a laptop with an AMD integrated GPU, I get some high
CPU spikes and massive lag when i scroll through a document. Large documents
(tens of thousands of words, zero images) are near-unusable, but this is
noticeable even on an empty one-page document. On an X11 session, scrolling is
perfectly smooth.
Steps to Reproduce:
1. Start a KDE Wayland session
2. Open LibreOffice Writer
3. Scroll
Actual Results:
Choppy scrolling and high CPU usage
Expected Results:
Smooth scrolling, like in X11
Reproducible: Always
User Profile Reset: No
Additional Info:
This is on LO 7.4.3.2, kf5 (cairo+wayland) Linux 6.0 (Fedora 37). I have smooth
scrolling disabled and hardware acceleration enabled (toggling any of these
settings makes no difference). I do use fractional scaling on Wayland, but then
again it doesn't make a difference, the only factor that makes it not lag seems
to be not using Wayland at all. Starting LO in Safe Mode does not make a
difference either.
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