07-03-2018 07:37 AM
There seems to be a serious design flaw with the middle button on models shared with the T480. The problem is specifically that it is possible to be depressing the button without software reflecting this -- e.g. mmb is depressed and pressure is being applied to trackpoint but the mouse on-screen moves instead of displaying the scroll icon.
This is due to the pressure required to make the connection from key to board is more than the pressure required to physically "feel" that the button is depressed. This results in the user having to press the middle mouse button disproportionately hard to ensure that scrolling does not cease. Of course, this in itself is unsatisfactory as it is much more likely to cause hardware damage when disproportionate pressure is required to fully utilize the device.
I will be testing this on other models at my nearest vendor at some point, I recommend someone nips this in the bud soon before the wave of warranty claims come flooding in.
07-13-2018 03:42 AM
09-05-2018 11:32 PM
09-16-2018 06:34 PM
I returned 1 T480s and 3 X280 due to the same problem on Left and Middle buttons of Trackpad.
I tested it in different shops and found the same symptom, so, Thinkpad, forget it!!
10-01-2018 07:40 AM - edited 10-01-2018 07:41 AM
Same thing is happening for me, brand new t480s.
Left and middle buttons register clicks inconsistently. If the button is not pressed hard enough, it doesn't register. Middle button depresses while scrolling quite often.
As a bonus, trackpoint starts moving by itself a couple of times per hour.
With a quick search I found out that all these seem to be pretty common problems for t480s and other Lenovos this year.
It's absolutely ridiculous that these obvious issues end up in production.
I think I will need to just disable the trackpoint since it's annoyingly unreliable to use.
11-16-2018 06:39 AM
I have the same problem on a T480 built in China in August. I operate the left trackpad button with my thumb, while operating the trackpoint with my middle finger. Sometimes the mechanical click of the trackpad button occurs without a button press being registered, and most of my dragging motions are broken by a momentary lift-off of the button, even though it has not clicked back mechanically. It seems clear that the pressure required to activate or hold the button in the pressed state is MORE than the pressure needed to physically depress the button into its clicked state. It is quite easy to test this while drawing a line in "paint". Is there any evidence that warranty service can fix this, or is it a design fault with the buttons that will have to await a new design?
12-29-2018 08:36 AM
Having the same annoying issues on my T480 that I ordered near the end of October 2018. This makes scrolling the thinkpad way unpredictable which is too bad because I wanted to like this laptop. Upgaded from the E550 model which was great using the trackpoint and middle button to scroll. I wish I knew about this issue before I ordered.
I'm seeing similar behavior with the left button. This causes an unpredictable experience when using the trackpoint and left button to select/highlight text.
01-11-2019 11:47 AM
Have the same issue on my 6th gen x1 - computer spec'd in october/november - seems like quite a problem. Sent a message to the service center but did not hear back.
Symptoms are random depressing on center button if I reduce pressure and when I click left there is a slight catch