Re: PROBLEM: Missing events on thinkpad trackpoint buttons

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On Wed, Aug 19, 2015 at 10:10 AM, Nick Bowler <nbowler@xxxxxxxxxx> wrote:
> On 2015-08-19, Benjamin Tissoires <benjamin.tissoires@xxxxxxxxx> wrote:
>> On Tue, Aug 18, 2015 at 3:06 PM, Benjamin Tissoires
>> <benjamin.tissoires@xxxxxxxxx> wrote:
> [...]
>>> On Mon, Aug 17, 2015 at 10:31 PM, Nick Bowler <nbowler@xxxxxxxxxx> wrote:
>>>> 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.

Yes, I still want it. It is less critical, but the more logs we have,
the better.

Cheers,
Benjamin

>
> Regards,
>   Nick
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