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ColonelONeill
Posts: 6,704
Registered: ‎12-26-2009
Location: Toronto
0

Re: 90w adapter leads to unusable, jumpy touchpad

OT, but the adapter signals to the machine? That's neat. Does it pass any useful data we can see? Like actual wattage draw?
W520: i7-2720QM, Q2000M at 1090/695/1390, 22GB RAM, 500GB HDD, FHD screen
TPT1: 1839-23U, stock ICS
X61T: L7500, 3GB RAM, 500GB HDD, XGA screen, Ultrabase
billbolton
Posts: 1,839
Topics: 68
Kudos: 167
Solutions: 103
Registered: ‎12-02-2007
Location: Sydney, Australia - Best Address on Earth
0

Re: 90w adapter leads to unusable, jumpy touchpad


ColonelONeill wrote:


OT, but the adapter signals to the machine?


No..... the slim adapter radiates a RF noise of some sort which is impacting the machine.

 

Cheers,

 

Bill

------------------------------
I don't work for Lenovo
Paper Tape
chorsum
Posts: 8
Registered: ‎11-01-2011
Location: hk
0

Re: 90w adapter leads to unusable, jumpy touchpad

Your are exactly right. I have the same problem in my X220i and Google about it. It exactly produce the same problem and result as other user in this forum... so amazing the pointer stop jumpy when I touched the metal at display.

Paper Tape
chorsum
Posts: 8
Registered: ‎11-01-2011
Location: hk
0

Re: 90w adapter leads to unusable, jumpy touchpad

This thread started half-year ago and still no solution?

Should Lenovo make a recall or? It is obviouly a defective product!

Punch Card
nicbex
Posts: 41
Registered: ‎06-28-2011
Location: Sweden
0

Re: 90w adapter leads to unusable, jumpy touchpad

It's all a big joke. Either the moderators have stopped visiting the forum or hides from this thread. The touchpad jumps crazy as soon as i:

1. Plug in the AC-adapter

2. Plug in an ethernet cable

 

There's probably some serious flaw in the design of the chassis/mainboard, transferring electricity to the touchpad. 

Retired Employee
JameZ
Posts: 3,110
Registered: ‎07-11-2010
Location: Malaysia
0

Re: 90w adapter leads to unusable, jumpy touchpad

@All,

The vendors are still working on a firmware fix for this. Engineering have tested the earlier firmware provided by them however problem still persist thus vendors are still working on it.

//JameZ

Check out the Community Knowledge Base for hints and tips.


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W520 | 4176-38U | i7 - 2720QM | Quardo 1000M | 8GB RAM | 60GB OCZ Agility 3

Paper Tape
chorsum
Posts: 8
Registered: ‎11-01-2011
Location: hk
0

Re: 90w adapter leads to unusable, jumpy touchpad

Thanks JameZ, hopefully you can work it out before the snow ball rolling bigger. The vendor Synaptics in this case they should fix this ASAP.

What's DOS?
daifunk
Posts: 1
Registered: ‎11-03-2011
Location: USA
0

Re: 90w adapter leads to unusable, jumpy touchpad

Just got an X220 with the slim battery.  I had the issue and since the power supply was emiting a crackling sound I contacted support, and they sent me a replacement battery.  You would think that after 1/2 year of the issue being on their radar, you would think that the support personnel would know about it and not send a replacement.

 

Can't believe that after 1/2 year there we are still in the same situation.

 

Our department pushed and pushed and finally received the OK to use Lenovo laptops, but with the amount of issues that we are having and the lack of good support, will likely go back to using Dell.

Punch Card
Bibbleq
Posts: 27
Registered: ‎08-26-2011
Location: UK
0

Re: 90w adapter leads to unusable, jumpy touchpad

 

@JameZ

Thanks for the update, hope for some good news soon...

 

@daifunk

do you mean the power supply was buzzing and popping? I assumed that was normal for my slim adaptor or have I got it wrong?!

 

Punch Card
nicbex
Posts: 41
Registered: ‎06-28-2011
Location: Sweden
0

Re: 90w adapter leads to unusable, jumpy touchpad

Update: The mouse gets jumpy for connecting a secondary monitor through the displayport. So, all? connections made to the computer makes the mouse pointer go crazy.