On 2015-08-19, Benjamin Tissoires [off-list ref] wrote:

On Tue, Aug 18, 2015 at 3:06 PM, Benjamin Tissoires
[off-list ref] wrote:

[...]

quoted

On Mon, Aug 17, 2015 at 10:31 PM, Nick Bowler [off-list ref] wrote:

quoted

Here is the evtest result from placing two fingers on the touchpad,
then pressing the left trackpoint button 10 times, counting 1 second
between each press.  As you can see, only 3 presses and 3 release
events total were sent by the kernel, sometimes with many physical
button presses between the press and its corresponding release:

OK, so this is definitively weird. My first idea would be a firmware
problem. I have asked Chandler to reproduce it on his t450 and see if
we observe it on our laptops too.

Update on this one : Chandler reproduced it on the t450, so it's
likely that all of these sensors are affected. It is still unclear if
it is a firmware bug or a driver problem, but the chances are huge
that this is a firmware bug. Anyway, that's one more reason to push
towards RMI4 over SMBus for these sensors: the bug is not present with
this protocol :)

Well, that sounds fortunate :)

Do you still want the ps2emu-record log?  I didn't have time to run it
yesterday but should be able to do it this evening.

Regards,
  Nick