Re: hid-multitouch stuck taps, possibly 4.5 regression?

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On Thu, Mar 17, 2016 at 1:24 PM, Andrew Duggan <andrew.duggan@xxxxxxxxx> wrote:
> On Thu, Mar 17, 2016 at 11:43 AM, Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote:
>> On Thu, Mar 17, 2016 at 1:06 AM, Mika Westerberg
>> <mika.westerberg@xxxxxxxxxxxxxxx> wrote:
>>> On Wed, Mar 16, 2016 at 02:59:48PM -0700, Andy Lutomirski wrote:
>>>> [add i2c-designware maintainers]
>>>>
>>>> On Wed, Mar 16, 2016 at 1:47 AM, Benjamin Tissoires <btissoir@xxxxxxxxxx> wrote:
>>>> > Hi Andy,
>>>> >
>>>> > On Mar 15 2016 or thereabouts, Andy Lutomirski wrote:
>>>> >> Hi-
>>>> >>
>>>> >> In 4.5 and several 4.5 rcs, I see occasional stuck taps (I think) on
>>>> >> my XPS 13 9350's touchpad.  The effect is that trying to left-click
>>>> >> ends up middle-clicking.  I think it's a kernel issue and not a
>>>> >> hardware or libinput issue, but I'm not 100% sure.  I don't think I
>>>> >> had this issue in 4.4.
>>>> >>
>>>> >> I've attached what I think is an evtest issue of my fixing the issue
>>>> >> by pressing three fingers down in sequence and then releasing them.
>>>> >> After doing that, left-clicks worked.
>>>> >
>>>> > I think I already have been reported the issue here:
>>>> > https://bugs.freedesktop.org/show_bug.cgi?id=93948
>>>> >
>>>> > The result was that it was more likely an I2C transport bug than a
>>>> > hid-multitouch one (see comment #8 in the fdo bug).
>>>> >
>>>> > You can try to run hid-recorder when you see the problems, and then
>>>> > parse the output (or just send it to me). There is huge chances that
>>>> > there will be no events from I2C sending the release.
>>>> >
>>>> > And again, I am not sure how we could end up debugging this in the
>>>> > i2c-designware driver :(
>>>> >
>>>>
>>>> Does this ring a bell?
>>>
>>> i2c-designware usually prints errors to dmesg if it fails to transfer
>>> messages. Can you include dmesg of the failure as well?
>>
>> Nothing shows up at all.  All I have is:
>>
>> input: DLL0704:01 06CB:76AE Touchpad as
>> /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-7/i2c-DLL0704:01/0018:06CB:76AE.0001/input/input12
>
> What is the fw id? I have a 9343 with the same touchpad and have not
> noticed an issue. This is the dmesg output for my touchpad.
>
> [    5.216319] psmouse serio1: synaptics: Touchpad model: 1, fw: 8.1,
> id: 0x1e2b1, caps: 0xd00123/0x840300/0x12e800/0x0, board id: 3038, fw
> id: 1832324

Mine is shinier and newer, apparently.

psmouse serio1: synaptics: Touchpad model: 1, fw: 8.2, id: 0x1e2a1,
caps: 0xf00223/0x840300/0x12e800/0x0, board id: 3038, fw id: 2011643
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