[ltp] X40 trackpad gone nuts: wipe calibration data?

[Richard Neill]

Jon Dowland wrote:
> Hello all, Argh help!
> 
> My X40's trackpad has started going bananas. It jumps all
> over the screen and is totally unusable. I've tried
> reducing the sensitivity and that makes things fractionally
> better but still unpredictable (there's not necessarily a
> correlation between which way I push it and which direction
> the pointer goes).


Do you mean the trackpoint (red dot pointing stick), or the touchpad 
(smooth surface)?

Assuming you mean the trackpoint, there isn't much configuration data 
stored.

My best guess is that you have a loose connection, and you should refer 
to the hardware maintenance manual on how to remove the keyboard 
assemble. Remove the keyboard, then press the connection firmly back 
together.

Richard





> 
> I've taken up the G, H, B keys and looked for dirt near the
> device but it seems clean. Is it worth removing the
> keyboard entirely?
> 
> Does anyone know if it possible to wipe the trackpad's
> calibration data? I'm wondering if starting from zero would
> help.
> 
> Failing that, can anyone recommend either DIY
> repair/replacement instructions for the trackpad,
> transplanting one from another X40 or a repair dealer who
> might be able to help?
> 
> I'm fairly sure it isn't a software issue. I've tried a few
> different kernel versions to no avail (but I hadn't made a
> chance of that type whe nthe problem started happening). I
> don't have windows on the machine and it would be
> non-trivial to put it on. I could try a BIOS and Controller
> software upgrade (mine seems to date from 2004) but I'm
> sceptical if that would help.
> 
> Thank you
> 
>