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lenovo_t420
Paper Tape
Posts: 2
Registered: ‎12-06-2011
Location: Europe
Views: 23,180
Message 1 of 9

Touchpad buttons not working on lenovo t420

Hi all,i am new to this forum,i bought t420 last mounth from USA. Yesterday i spilled liquid on the clicks on touchpad. The right button works but it freezes sometimes, left doesnt work at all. Because i am in Europe now,the warnity does not cover.Do you have any idea how it can be fixed. Also the ultranav buttons dont work. With external mouse it works.Could you send me a link from a trackpad or some ideas.

Thanks in forward.

peednus
Token Ring
Posts: 80
Registered: ‎01-25-2010
Location: Canada
Views: 23,109
Message 2 of 9

Re: Touchpad buttons not working on lenovo t420

I guess the only thing to do is to take it apart and clean it;

http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/0a60007.pdf

 

_______________________________________________________
T420s, i5-2520M @2.5, nVidia 4200m, 8GB DDR3, OCZ Vertex 3 Max IOPS 240GB SSD, Hitachi 320GB @7200rpm ulrabay, 8Pro x64
T61, Centrino Duo @1.8, GM965, 4GB PC2-5300 DDR2 @667MHz, OCZ Agility 120GB SSD, 7Pro x64
Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 23,253
Message 3 of 9

Re: Touchpad buttons not working on lenovo t420

Hit Fn+F8, disable the touchpad. Do the TrackPoint buttons work?

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
ShadowGunner9
Paper Tape
Posts: 4
Registered: ‎01-05-2012
Location: United States
Views: 22,996
Message 4 of 9

Re: Touchpad buttons not working on lenovo t420

Hello, I have the same problem with my T420, I didn't do anything to the laptop, but the mouse buttons stopped working. However, the trackpad I guess where you move the cursor does work. Pressing FN+F8 and switching off the trackpad only makes the buttons above the pad work. How do I fix this.

burtal
Punch Card
Posts: 23
Registered: ‎09-26-2012
Location: Bucharest
Views: 20,484
Message 5 of 9

Re: Touchpad buttons not working on lenovo t420

hello
have a similar problem

1 reseat the wire and start machine all works fine.restart and still works
2.cold reboot and the touch and track are not working.....it will work again if the connector is reconnected but only for the first time....after cold reboot it will die again.


one more question trackpoint and the buttons from keyboard are separete from the ones on palmrest......they should work...right?
Acb011990
What's DOS?
Posts: 1
Registered: ‎12-18-2012
Location: Philippines
Views: 20,033
Message 6 of 9

Re: Touchpad buttons not working on lenovo t420

I have the same problem with my laptop, a little coffee was spilled on the left and right click buttons below the touchpad. And then all 'select' buttons won't work, only the scrolls are working. Touchpad and keyboard have already been cleaned up by IT specialists, all buttons have started working (though not consistent) except for the left and right click buttons below the touch pad which seems to be both functioning as right click. Do you know what else can be done? Im currently using a mouse but the right click won't work (which works when used in other laptops)

Drustan
What's DOS?
Posts: 1
Registered: ‎08-23-2014
Location: Taunton, UK
Views: 12,745
Message 7 of 9

Re: Touchpad buttons not working on lenovo t420

I have a T420 which is about a year old. It is running only Ubuntu and has been fine since I got it but then randomly the other day I passed it to my parter sitting next to me for no more than 5 minutes and when she passed it back the mouse button appeared to 'stick' this is not a mechanical stick - it was a software stick...?

If thats possible...?

 

The pointer and associated buttons work fine.

 

Very strange.

giorgi2173
Paper Tape
Posts: 2
Registered: ‎09-01-2017
Location: GE
Views: 4,014
Message 8 of 9

Re: Touchpad buttons not working on lenovo t420

I did that and yes Track buttons work. Then what? What should i do next? 

 

Thanks.

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 4,002
Message 9 of 9

Re: Touchpad buttons not working on lenovo t420

giorgi2173,

I assume you also have a T420 machine?

If the TrackPoint buttons work properly when the touchpad buttons are disabled but not when the touchpad buttons are enabled, this typically points to a hardware failure in the touchpad.

You can also try booting into the recovery environment or a Ubuntu USB to see if the touchpad works properly there. If not, then it's almost certainly a hardware problem.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U

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