https://bugs.freedesktop.org/show_bug.cgi?id=99439
Bug ID: 99439
Summary: High cpu usage during trackpoint scrolling.
Product: Wayland
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: libinput
Assignee: [email protected]
Reporter: [email protected]
When I use scrolling with trackpoint+3 mouse in Telegram (version 1.0)
messaging application with libinput driver, cpu goes as high as 70%-80% during
small movements. It only happens with trackpoint+3 mouse, but not with touchpad
while both use smooth scrolling.
To my understanding cpu usage for touchpad and trackpoint smooth scrolling
should be approximately the same for similar movements. So I suspect driver
issue. Also with evdev+synaptics driver cpu usage is also significantly less
(around 20%) for both devices. Only two of my applications use smooth scrolling
intensively: chromium and telegram, but I have problems only with telegram.
Distro: Ubuntu 16.04
DE: Xfce 4.12
Graphical server: Xorg 1.18
libinput 1.2.3
xserver-xorg-input-libinput 0.18.0
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