Comment 210 for bug 1220426

The scroll problems seem to be related to the 'idle time' support of syndaemon that disables the touchpad briefly after typing. If I hit 'enter' to free up scrolling, then disable that feature entirely (via the kde touchpad config, which I assume is restarting the daemon with new settings), all of the scrolling issues go away. However, if scrolling isn't working when I disable that feature, then scrolling never unlocks. So definitely seems like the timer associated with that interval is never completing.

Although, strangely, when I do disable the interval (via the kde touchpad config), the typing still causes scrolling to be temporarily disabled...

Will dig a little deeper. But in the meantime, the xorg patch + disabling syndaemon typing intervals is the winning combo.