Touchpad scrolling blazing fast in KF5 apps

Question

I noticed that the touchpad two-fingers vertical scrolling is extremely fast in kf5 apps, e.g.: kate.
I also noticed the same issue in the Plasma 5 UI, e.g.: when scrolling over the kmix systray icon to increase/decrease the volume (on the other hand the scroling speed is fine "inside" the kmix app)
The scrolling speed is fine in all other apps, including KDE apps not yet ported to KF5 (e.g.: dolphin).
I tried changing with the touchpad kcm but it does not seem to have any effect (whatever the value the speed is always super fast). I also tried to remove the rc file for the touchpad in .confing, with no luck.
Anybody else with the same issue?
Is there something like a global setting for the X server that can override KDE settings?

Answer 1

Hi, I'm having the same problem too and, as Wu already said, nothing seems to work (and this is particularly annoying in kate when you need to open a file with thousands of lines). However, while I was searching for a solution, I just noted that changing the scroll speed in the mouse kcm module partially works also for KF5 applications:
Open the KF5 application you need to use (kate for example)
While the application is running, execute the command
kcmshell5 mouse
and switch to the tab Advanced
Set the mouse to scroll 1 line at time
If it is already set to scroll 1 line at time, then change it to another value (2 lines for example), apply the setting and set it back to 1 line at time
Finally apply the settings and close the kcm module. Now the scroll speed should be slower
The strange thing is that scroll setting lasts until the application is closed, so the procedure must be repeated every time you restart the application: can anyone else confirm this behaviour?
Last edited by mauritiusdadd (2015-02-01 07:41:10)