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I am on a fresh 12.10 install on a brand-new Lenovo Thinkpad X121e. The touchpad was already quite bad just after the installation, but now it is just too erratic to use...

Trying to move the mouse in a straight line, the mouse just wobbles erratically up and down, even when I try to hold my finger still. By eratically, I mean around 40px or 2-3 lines of text. The mouse is not jumping into corners like in this bug. Also, the trackpoint is very smooth.

It did work better once before, I suspect the issue arose first when I tried to synclient AreaBottomEdge=5500. What can I try? Can I undo the changes synclient did?

I also tried to deinstall the synaptics driver, without any difference. Should something have changed. Is there a way to up- or downgrade the firmware?

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There's a possible solution here. (askubuntu.com/questions/60237/…) It seems like a driver related issue, so updating the driver like in the link should resolve it for you! –  Merri Jan 12 '13 at 12:38
    
@Merri Thank you for the link. I am already using the synaptics driver though... Do you have any other ideas? –  Earthliŋ Jan 12 '13 at 12:49
    
The latest one that you have to manually install yeah? It appears the one in Ubuntu is out of date. Hmm is there anyway you could test it on a different OS just to rule out a hardware problem? Maybe if you have Windows dual booted or even from a live CD? –  Merri Jan 12 '13 at 12:53
    
@Merri I don't own a Windows version, and I don't have a CD drive... The driver version on the page you linked was 1.4, while only 1.3 was available on ubuntu at the time. Now I am already using version 1.6.2 as provided by ubuntu. –  Earthliŋ Jan 12 '13 at 12:56
    
Also, the page reports that normal mouse movement is working fine, which is not the case for me. –  Earthliŋ Jan 12 '13 at 12:58
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