I have this one. I did not use it for a long time but after I moved into it, the touchpad was very shaky. Once in a while the cursor jumped all over. I found I

I have this one. I did not use it for a long time but after I moved into it, the touchpad was very shaky. Once in a while the cursor jumped all over. I found I could disable it with an xinput disable command, but that was just a temporary relief. After research I came to the conclusion that it was a hardware problem, but as I found it after the warranty expired I could not return it. There are descriptions on the interwebs how to solder a wire to better ground the touchpad so I did that. It improved it but it still goes bad once in a while. Apart from that, I like it.