I'm using Kubuntu 17.04, KDE Frameworks: 5.37.0., kernel 4.10.0-35-generic.
All applications (Firefox, Yakuake, System Settings, Digikam, LibreOffice, Kate, NetBeans) are exhibiting strange pauses/lagging/faltering/stops when scrolling content with the mouse wheel -- mouse is wireless Logitech M185.
What might be causing this? How can I debug it?
For example when scrolling my Yakuake terminal content each 3rd and 4th scroll are ineffective and don't move the content. The content can be scrolled as fast as one wishes by dragging the scrollbar or by middle-click scrolling.
Ksysguard shows no log entries appearing, nor any noticeable resource changes happening when I'm doing this. It doesn't matter how many apps are open the scrolling "lags" in the same way. Even when I scroll at one "bump" of the mousewheel each second the lag/pause still happens; a series of moves being ineffective.
I even tried doing two scrolls, turning the mouse off-and-on, but the pauses come in the same place as if they're a property of the page being scrolled.
The same pausing happens when altering spin box values using the mouse.
Where to start?