09-21-2011 05:34 PM
Reporting back from my previous post: the BIOS update to v1.21 and ThinkPad UltraNav Pointing Device driver updated to v126.96.36.199 does not resolve the erratic touchpad behaviour. I ran my battery down to 10%, then plugged-in the Ultraslim AC Adaptor P/N 41R4538 (2011.32), and recorded the following behaviour over the recharge cycle (I stopped at 75% charge, as I figure I'd proven the point by then):
10% - 30%: erratic trackpad
40%: occasionaly erratic trackpad
50%: erratic trackpad
60%: trackpad ok for a couple of minutes, then erratic
70%: trackpad ok for a couple of minutes, then erratic for a minute or so, then was ok for a couple of minutes, then erratic for a couple of minutes, repeating this good-bad behaviour up to 75% when I stopped testing.
I will be lodging a warranty/money-back request tonight.
09-22-2011 02:32 AM
Same problem with the Ultraslim AC Adaptor P/N 41R4538 (2011.23), BIOS v1.21 and ThinkPad UltraNav Pointing Device driver v188.8.131.52. Thinkpad x220 4286-CTO with i7.
What I noticed is that if I disconnect the cable splitter and connect the power tip directly to the power cord the problem become sporadical rather than constant. Still makes the adapter unsable.
09-30-2011 03:14 PM
10-05-2011 09:16 PM
And the engineers are aware that it happens on 65W adapters aswell, not only the 90W-ones? Cause I have the same annoying problem and I have the 65W-version.
10-16-2011 12:13 PM
I just recently got my 90W Ultraslim adapter replaced with a standard 65W adapter since I had this issue.
What I'm wondering is, in the time that I was using the 90W adapter, was my X220 damaged in any way? (Battery etc.)
10-17-2011 11:37 PM
10-23-2011 05:08 PM
It happens on the 65W adapter as well! I'm so god **bleep** angry on this problem right now. How could it be that NO ONE noticed that the track pad becomes totally useless just by connecting the power cable?! What definitely reproduces this problem for me is when connecting both to the 65W-adapter and having an ethernet cable connected. The mouse pointer becomes totally insane, immediatly when the ethernet cable is plugged in.
Fix this, NOW.
10-27-2011 07:55 PM
I am in shock with the amount of notes posted on the problem with this slim power supply and the x220. I just got an x220 a the beginning of September and got the slim power supply for travel. For two weeks I tried tweaking everything and running every diagnostic. Eventually I found a blog where someone posted the slim power supply and touchpad issue. What shocks me is that Lenovo is still shipping the slim power supply with the x220 KNOWING there is a real problem. And going through this blog it's clear that everyone is just getting the run around and no solution.
And customer service is a joke! somebody who just replies from a script.
10-29-2011 05:19 PM
Actually, now I've noted that the same problem happens when you just plug in the ethernet cable (running on battery). This is a joke, and no updates from Lenovo whatsoever. I'm not terribly satisfied with Lenovo right now.