@Resistor:Resistor wrote:The erratic cursor could be the direct result of static electricity.
I stretched a cloth nail apron across the touch pad, working around the nail apron.
The cursor seemed unusually stable.
Now, to figure out a way to make the nail apron a permanent fixture, in an unobtrusive way.
Or, find a way to ground myself and the laptop, to drain the static electricity.
Kind of a blend of old technology . . . and new, eh? I might have an old cloth nail apron around from my days as a carpenter . . . a bit obtrusive . . . no? But, in terms of grounding . . . maybe a 16d nail spanning from the laptop to a coin placed near by the computer??? Interesting, but I don't think that quite meets the "hacker" standard . . . . Let me know how it goes.
Personally, yesterday I again wiped LM15 Cinn and re-installed LM15 XFCE, but using only a plug in mouse and the built-in keyboard . . . I've been thinking of using this method to test whether installing with a plug-in keyboard adds a layer of confusion to "synaptics" that now, using the built-in keyboard only during installation will influence this problem of the erratic cursor. The problem happened again yesterday in Cinn that finally prompted me to remove it and move to a hopefully more stable DE . . . we'll see how it goes. As of yesterday this "jumping cursor" issue continued to be a problem that makes LM an optional system, rather than a first choice system for serious work . . . .
But, thanks for your idea . . . perhaps it's the residual metallic bits left from the nails in the apron that makes for a good static electricity ground??? : - )))