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T420 Cursor Problem
T420 Cursor Problem
Hi,
Running Ubuntu on my Think Pad and having really bad cursor problems lately.
Even reloaded OS and still have cursor jumping around and clicking by it's self on things.
Any ideas, hard to type this even!
Running Ubuntu on my Think Pad and having really bad cursor problems lately.
Even reloaded OS and still have cursor jumping around and clicking by it's self on things.
Any ideas, hard to type this even!
Re: T420 Cursor Problem
Are you using a mouse or the track-point?
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Re: T420 Cursor Problem
The cursor on my T500 drifts. I've tried several fixes including hardware replacements and software fixes. It's usable, but still drifts.
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Re: T420 Cursor Problem
Hi,
Thanks, I'm using the Mouse, don't really like the track point.
I have 2 T420's, and just got the other one up and running so I can type without pulling my hair out.
I thought when I reinstalled Ubuntu, it would fix the problem but, didn't.
I'm going to upgrade the hard drive and see what that does.
I like having 2 working computers, so if one goes down...
I have another to get info to fix it!
Have been using, T 420's for 6 years or more, and the only problem I've had was a noisy fan which I replaced myself.
These Laptops are built like tanks and easy to work on!
Thanks, I'm using the Mouse, don't really like the track point.
I have 2 T420's, and just got the other one up and running so I can type without pulling my hair out.
I thought when I reinstalled Ubuntu, it would fix the problem but, didn't.
I'm going to upgrade the hard drive and see what that does.
I like having 2 working computers, so if one goes down...
I have another to get info to fix it!
Have been using, T 420's for 6 years or more, and the only problem I've had was a noisy fan which I replaced myself.
These Laptops are built like tanks and easy to work on!
Re: T420 Cursor Problem
Hi,
Well I did improve the situation a little by removing the battery and power plug then holding the Power Button down for 30 sec.
This helped stabalize the cursor after rebooting but did not cure it.
Still trying to figure out if this is a software or hardware problem?????????????
This T420 has been used HARD everyday for years so have got my money out of it, see as I bought refurbed for $150!
I'm going to throw a 1TB HHD Drive in it and see what that does.
Maybe the old OEM drive is starting to fade?
Admittedly I'm no Computer Geek and why I am here, but seems no one has delt with this before?
Well I did improve the situation a little by removing the battery and power plug then holding the Power Button down for 30 sec.
This helped stabalize the cursor after rebooting but did not cure it.
Still trying to figure out if this is a software or hardware problem?????????????
This T420 has been used HARD everyday for years so have got my money out of it, see as I bought refurbed for $150!
I'm going to throw a 1TB HHD Drive in it and see what that does.
Maybe the old OEM drive is starting to fade?
Admittedly I'm no Computer Geek and why I am here, but seems no one has delt with this before?
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Re: T420 Cursor Problem
If you use the trackpoint, you may have a bad/worn keyboard.
If you use the trackpad, maybe replace that, or even the whole palmrest??
If you use the trackpad, maybe replace that, or even the whole palmrest??
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Lenovo: X240, X250, T440p, T480, M900 Tiny.
PS: the old Boardroom website is still available on the Wayback Machine.
Lenovo: X240, X250, T440p, T480, M900 Tiny.
PS: the old Boardroom website is still available on the Wayback Machine.
Re: T420 Cursor Problem
Hi,
Thank you!
That should be cheap enough, to replace the Palm Rest!
Thank you!
That should be cheap enough, to replace the Palm Rest!
Re: T420 Cursor Problem
Before you spend money replacing the palmrest maybe it might be worth testing with a another quality mouse. I have seen cheap mouses do similar things.seagiant wrote:Thanks, I'm using the Mouse, don't really like the track point.
Active --- Love the X series
X301 W 7/Mint | X201 540M L Mint | X220 2520 W7/Mint
Nostalgia
X61 T7500 / T41 T42 T43 / A31
Rogue daily driver - Samsung RV511 15.6 " Screen - W 7
X301 W 7/Mint | X201 540M L Mint | X220 2520 W7/Mint
Nostalgia
X61 T7500 / T41 T42 T43 / A31
Rogue daily driver - Samsung RV511 15.6 " Screen - W 7
Re: T420 Cursor Problem
Hi,
Well, I'm using the track pad, but an external mouse would be an idea...
To see if it cures the problem???
Well, I'm using the track pad, but an external mouse would be an idea...
To see if it cures the problem???
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Re: T420 Cursor Problem
If gunk gets under one or both trackpad buttons that causes them to register presses constantly that can make the entire trackpad malfunction and lead to exactly the behavior you described. I've seen it happen on two different T420s. I'd try taking it apart and cleaning the button contacts before replacing the whole thing.
You can test if this is the problem by just disabling the buttons under the trackpad in software. That should make the rest of the trackpad start behaving normally if the buttons are the issue.
You can test if this is the problem by just disabling the buttons under the trackpad in software. That should make the rest of the trackpad start behaving normally if the buttons are the issue.
Re: T420 Cursor Problem
Hi,
Thanks, I'll do that, I have replaced a fan before, so have been that deep into one, anyway!!!
Thanks, I'll do that, I have replaced a fan before, so have been that deep into one, anyway!!!
Re: T420 Cursor Problem
Hi,
Well I have it apart and have brushed and blown out everything but...
See no way to get under anything to clean it?
The sensors are glued and taped to the touch pad, so even scared to spray any Contact Cleaner in there.
Don't want to, "melt", anything, but has less dust than it did.
Well I have it apart and have brushed and blown out everything but...
See no way to get under anything to clean it?
The sensors are glued and taped to the touch pad, so even scared to spray any Contact Cleaner in there.
Don't want to, "melt", anything, but has less dust than it did.
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Re: T420 Cursor Problem
The two buttons below the touchpad are on a separate PCB that can be removed and disassembled. They're just rubber dome contacts and it's easy for things to get under them.
Like I said, you can test if this is your problem before doing the disassembly by disabling the buttons in software and seeing if that makes the trackpad function normally.
Like I said, you can test if this is your problem before doing the disassembly by disabling the buttons in software and seeing if that makes the trackpad function normally.
Re: T420 Cursor Problem
Hi,
Thank you very much, i guess you have more knowledge than me.
Everything I saw was glued AND taped and I did not want to destroy anything not having info on the right way you might do it.
I cleaned what I could and put everything back together and it is now better and usable but not fixed.
I will get another palm rest/touch pad and try that.
Thanks again!!!
Thank you very much, i guess you have more knowledge than me.
Everything I saw was glued AND taped and I did not want to destroy anything not having info on the right way you might do it.
I cleaned what I could and put everything back together and it is now better and usable but not fixed.
I will get another palm rest/touch pad and try that.
Thanks again!!!
Re: T420 Cursor Problem
Hi,
Well I bought a cheap USB Mouse and used that with the T420 and it ran perfect, soooooooooo....
I assume that tells me I have a TouchPad Hardware problem???
Well I bought a cheap USB Mouse and used that with the T420 and it ran perfect, soooooooooo....
I assume that tells me I have a TouchPad Hardware problem???
Re: T420 Cursor Problem
Hi,
Well, I lucked out, I bought a used T420 missing the hard drive, dvd drive and Wi Fi Card, for $30 shipped...
Just to get the palm rest with a god touch pad.
However, when I saw the laptop I was pleasently surprised as it was VERY clean and had a nice long OEM power cord and a big 9 battery case.
Decided to keep the new laptop and scavange parts off the beat up on I was going to fix, so...
Moved everything I needed and the laptop, booted right up using Ubuntu 20.04!
No more cursor problems anyway!!!
Well, I lucked out, I bought a used T420 missing the hard drive, dvd drive and Wi Fi Card, for $30 shipped...
Just to get the palm rest with a god touch pad.
However, when I saw the laptop I was pleasently surprised as it was VERY clean and had a nice long OEM power cord and a big 9 battery case.
Decided to keep the new laptop and scavange parts off the beat up on I was going to fix, so...
Moved everything I needed and the laptop, booted right up using Ubuntu 20.04!
No more cursor problems anyway!!!
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