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My fingers feel something on the 2015 rMBP trackpad surface

K

KillerHuy

macrumors newbie
Original poster
Mar 31, 2015
4
0
I've just got a new MBP 2 days ago. So far I'm loving the new force touch trackpad. However, my fingers can feel a tiny bit of something appears on the trackpad surface. It is hard to describe. I've have looked carefully and the trackpad is beautifully fine. This thing is completely invisible. You can only feel it with your finger.

I tried two display models in authorized stores, one got similar issue like mine, the other is smooth as butter. So I'm very confused right now. Is this thing normal for a new machine and will be gone later on? :confused:
 
Haptic Feedback???

KillerHuy said:
I've just got a new MBP 2 days ago. So far I'm loving the new force touch trackpad. However, my fingers can feel a tiny bit of something appears on the trackpad surface. It is hard to describe. I've have looked carefully and the trackpad is beautifully fine. This thing is completely invisible. You can only feel it with your finger.

I tried two display models in authorized stores, one got similar issue like mine, the other is smooth as butter. So I'm very confused right now. Is this thing normal for a new machine and will be gone later on? :confused:
Click to expand...

Look it up it's what gives you the click feeling without a phsical click you may just be very sensitive too it.
 
Samuelsan2001 said:
Look it up it's what gives you the click feeling without a phsical click you may just be very sensitive too it.
Click to expand...

I actually know the clicking feel. This issue is like the trackpad surface is not completely flat. You can feel like a tiny line on the surface when sliding your fingers on it.
 
Exactly

KillerHuy said:
I actually know the clicking feel. This issue is like the trackpad surface is not completely flat. You can feel like a tiny line on the surface when sliding your fingers on it.
Click to expand...

this may be down to the haptic feedback, the mechanism that creates the "click".
 
Not quite the same but I can feel a kind of very, very, faint vibration on the top surface of the mid-2014 15 rMBP when I run my fingers across the metal. Only when moving my fingers - cannot feel it when my fingers are still or when the machine is off.

It doesn't bother me at all and I've put it down to the vibration (maybe phasing) of the fans running at their lowest speed.
 
I was in a Best Buy store today playing with one and I experienced the same thing. To me it felt like it was supposed to be there, and I only could feel it when I actually tried to.
Did you try changing the sensitivity at all? Maybe that could help
 
I often times use a magic mouse. You don't have to though there's plenty on Amazon. Logitech is really good.
 
FumbleDuck said:
Not quite the same but I can feel a kind of very, very, faint vibration on the top surface of the mid-2014 15 rMBP when I run my fingers across the metal. Only when moving my fingers - cannot feel it when my fingers are still or when the machine is off.

It doesn't bother me at all and I've put it down to the vibration (maybe phasing) of the fans running at their lowest speed.
Click to expand...

Are you using the grounded (3 pin) cable to the mains?
 
yangchewren said:
Are you using the grounded (3 pin) cable to the mains?
Click to expand...

The charger only has two pins internally that I can see. I then attach the three pin adapter for UK plugs. From what I can see of the adapter and magsafe charger, I don't think the third pin connection makes it through to the laptop.
 
That strange feeling/sensation what you get from surface disappears when you use extension cable (grounded cable).

First time I noticed it was when Unibody laptops came out, and I can still feel it with newest retina laptops.
 
Yup know exactly what your talking about. Have a friend touch your skin while your touching your laptop.. your friend will also feel the electrical vibration too it's really funny! so yeah, use a grounded plug and that "vibration" feel while dragging your finger over the laptop will go away.
 
How exactly do I use a "grounded" cable? AFAIK all power cables in the UK are grounded (they all have three pins). The actual Apple magsafe charger (white block) only has two pins on it (but the small UK adapter that "snaps" into the white block has three pins on it (it has to to fit UK sockets) but as far as I can tell, the third pin is not electrically connected into the white Apple magsafe block?

Hope that makes sense.
 
FumbleDuck said:
How exactly do I use a "grounded" cable? AFAIK all power cables in the UK are grounded (they all have three pins). The actual Apple magsafe charger (white block) only has two pins on it (but the small UK adapter that "snaps" into the white block has three pins on it (it has to to fit UK sockets) but as far as I can tell, the third pin is not electrically connected into the white Apple magsafe block?

Hope that makes sense.
Click to expand...

If u are using the UK plug, you must use the long cable version with a full 3 pin head to get it earthed. As you've mentioned, the compact, cable-free version is not grounded.

http://ecx.images-amazon.com/images/I/31ftDT0lN4L._SY300_.jpg
 
FumbleDuck said:
How exactly do I use a "grounded" cable? AFAIK all power cables in the UK are grounded (they all have three pins). The actual Apple magsafe charger (white block) only has two pins on it (but the small UK adapter that "snaps" into the white block has three pins on it (it has to to fit UK sockets) but as far as I can tell, the third pin is not electrically connected into the white Apple magsafe block?

Hope that makes sense.
Click to expand...

As yangchewwren mentioned, the small block doesn't have an electrically connected earth, but the full length cable does have an earth connection.

The metal pin that the plastic slot fits over on the PSU is the earth point, and the long cable has metal leaf springs inside the slot that electrically connect it to ground. The stubby plug block lacks these springs.

Either way, the MBP itself only sees two connections (+DC and ground) from the PSU itself, but this doesn't mean that it's immune to any ripple from a bad AC source, but the PSU is pretty good at filtering that out.
 
Or you could just plug the 2 prong Apple wall adapter into a grounded surge protector versus directly into the wall I suppose.
 
Yup - you guys are right, the power lead has electrical connections to continue the ground pin but the adapter block does not. How strange.
 
Thanks for all the helps. I brought my mac to an authorized store and they confirmed that there were some tiny bumps on the trackpad surface which was not normal. I've already contacted Apple for a replacement.

totten76 said:
I was in a Best Buy store today playing with one and I experienced the same thing. To me it felt like it was supposed to be there, and I only could feel it when I actually tried to.
Did you try changing the sensitivity at all? Maybe that could help
Click to expand...

Did your finger feel like there was some tiny bumps on the surface? Or it was just a clicking feel from a new trackpad?

Hieveryone said:
I often times use a magic mouse. You don't have to though there's plenty on Amazon. Logitech is really good.
Click to expand...

I also do a little gaming (Dota anyone? :cool:). So a trackpad and cheap bluetooth mouse is okay for me.

yukyuklee said:
im scared to look for this on mine, it will drive me nutts lol
Click to expand...

Yeah I'm kind of a perfectionist so it is very annoying to me, especially with the macbook.
 
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