[add i2c-designware maintainers]

On Wed, Mar 16, 2016 at 1:47 AM, Benjamin Tissoires [off-list ref] wrote:

Hi Andy,

On Mar 15 2016 or thereabouts, Andy Lutomirski wrote:

quoted

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?

--Andy

Cheers,
Benjamin

quoted

--Andy

quoted

Input driver version is 1.0.1
Input device ID: bus 0x18 vendor 0x6cb product 0x76ae version 0x100
Input device name: "DLL0704:01 06CB:76AE Touchpad"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 272 (BTN_LEFT)
    Event code 325 (BTN_TOOL_FINGER)
    Event code 328 (BTN_TOOL_QUINTTAP)
    Event code 330 (BTN_TOUCH)
    Event code 333 (BTN_TOOL_DOUBLETAP)
    Event code 334 (BTN_TOOL_TRIPLETAP)
    Event code 335 (BTN_TOOL_QUADTAP)
  Event type 3 (EV_ABS)
    Event code 0 (ABS_X)
      Value   1174
      Min        0
      Max     1216
      Resolution      12
    Event code 1 (ABS_Y)
      Value    585
      Min        0
      Max      680
      Resolution      12
    Event code 47 (ABS_MT_SLOT)
      Value      1
      Min        0
      Max        4
    Event code 53 (ABS_MT_POSITION_X)
      Value      0
      Min        0
      Max     1216
      Resolution      12
    Event code 54 (ABS_MT_POSITION_Y)
      Value      0
      Min        0
      Max      680
      Resolution      12
    Event code 57 (ABS_MT_TRACKING_ID)
      Value      0
      Min        0
      Max    65535
Properties:
  Property type 0 (INPUT_PROP_POINTER)
  Property type 2 (INPUT_PROP_BUTTONPAD)
Testing ... (interrupt to exit)
Event: time 1458078092.092559, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 1658
Event: time 1458078092.092559, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 359
Event: time 1458078092.092559, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 327
Event: time 1458078092.092559, type 1 (EV_KEY), code 325 (BTN_TOOL_FINGER), value 0
Event: time 1458078092.092559, type 1 (EV_KEY), code 333 (BTN_TOOL_DOUBLETAP), value 1
Event: time 1458078092.092559, -------------- SYN_REPORT ------------
Event: time 1458078092.232054, type 3 (EV_ABS), code 47 (ABS_MT_SLOT), value 2
Event: time 1458078092.232054, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 1659
Event: time 1458078092.232054, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 625
Event: time 1458078092.232054, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 270
Event: time 1458078092.232054, type 1 (EV_KEY), code 333 (BTN_TOOL_DOUBLETAP), value 0
Event: time 1458078092.232054, type 1 (EV_KEY), code 334 (BTN_TOOL_TRIPLETAP), value 1
Event: time 1458078092.232054, -------------- SYN_REPORT ------------
Event: time 1458078092.379317, type 3 (EV_ABS), code 47 (ABS_MT_SLOT), value 0
Event: time 1458078092.379317, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 931
Event: time 1458078092.379317, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 287
Event: time 1458078092.379317, type 3 (EV_ABS), code 0 (ABS_X), value 931
Event: time 1458078092.379317, type 3 (EV_ABS), code 1 (ABS_Y), value 287
Event: time 1458078092.379317, -------------- SYN_REPORT ------------
Event: time 1458078092.758084, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value -1
Event: time 1458078092.758084, type 1 (EV_KEY), code 333 (BTN_TOOL_DOUBLETAP), value 1
Event: time 1458078092.758084, type 1 (EV_KEY), code 334 (BTN_TOOL_TRIPLETAP), value 0
Event: time 1458078092.758084, type 3 (EV_ABS), code 0 (ABS_X), value 359
Event: time 1458078092.758084, type 3 (EV_ABS), code 1 (ABS_Y), value 327
Event: time 1458078092.758084, -------------- SYN_REPORT ------------
Event: time 1458078092.852128, type 3 (EV_ABS), code 47 (ABS_MT_SLOT), value 2
Event: time 1458078092.852128, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value -1
Event: time 1458078092.852128, type 1 (EV_KEY), code 325 (BTN_TOOL_FINGER), value 1
Event: time 1458078092.852128, type 1 (EV_KEY), code 333 (BTN_TOOL_DOUBLETAP), value 0
Event: time 1458078092.852128, -------------- SYN_REPORT ------------
Event: time 1458078093.018994, type 3 (EV_ABS), code 47 (ABS_MT_SLOT), value 1
Event: time 1458078093.018994, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value -1
Event: time 1458078093.018994, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1458078093.018994, type 1 (EV_KEY), code 325 (BTN_TOOL_FINGER), value 0
Event: time 1458078093.018994, -------------- SYN_REPORT ------------
Event: time 1458078093.297313, type 3 (EV_ABS), code 47 (ABS_MT_SLOT), value 0
Event: time 1458078093.297313, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 1660
Event: time 1458078093.297313, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 179
Event: time 1458078093.297313, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 654
Event: time 1458078093.297313, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 1458078093.297313, type 1 (EV_KEY), code 325 (BTN_TOOL_FINGER), value 1
Event: time 1458078093.297313, type 3 (EV_ABS), code 0 (ABS_X), value 179
Event: time 1458078093.297313, type 3 (EV_ABS), code 1 (ABS_Y), value 654
Event: time 1458078093.297313, -------------- SYN_REPORT ------------
Event: time 1458078093.348801, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 180
Event: time 1458078093.348801, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 650
Event: time 1458078093.348801, type 3 (EV_ABS), code 0 (ABS_X), value 180
Event: time 1458078093.348801, type 3 (EV_ABS), code 1 (ABS_Y), value 650
Event: time 1458078093.348801, -------------- SYN_REPORT ------------
Event: time 1458078093.355991, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 649
Event: time 1458078093.355991, type 3 (EV_ABS), code 1 (ABS_Y), value 649
Event: time 1458078093.355991, -------------- SYN_REPORT ------------
Event: time 1458078093.370723, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 648
Event: time 1458078093.370723, type 3 (EV_ABS), code 1 (ABS_Y), value 648
Event: time 1458078093.370723, -------------- SYN_REPORT ------------
Event: time 1458078093.377898, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 647
Event: time 1458078093.377898, type 3 (EV_ABS), code 1 (ABS_Y), value 647
Event: time 1458078093.377898, -------------- SYN_REPORT ------------
Event: time 1458078093.385184, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 646
Event: time 1458078093.385184, type 3 (EV_ABS), code 1 (ABS_Y), value 646
Event: time 1458078093.385184, -------------- SYN_REPORT ------------
Event: time 1458078093.399779, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 645
Event: time 1458078093.399779, type 3 (EV_ABS), code 1 (ABS_Y), value 645
Event: time 1458078093.399779, -------------- SYN_REPORT ------------
Event: time 1458078093.407435, type 1 (EV_KEY), code 272 (BTN_LEFT), value 1
Event: time 1458078093.407435, -------------- SYN_REPORT ------------
Event: time 1458078093.450960, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 646
Event: time 1458078093.450960, type 3 (EV_ABS), code 1 (ABS_Y), value 646
Event: time 1458078093.450960, -------------- SYN_REPORT ------------
Event: time 1458078093.458260, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 647
Event: time 1458078093.458260, type 3 (EV_ABS), code 1 (ABS_Y), value 647
Event: time 1458078093.458260, -------------- SYN_REPORT ------------
Event: time 1458078093.465568, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 648
Event: time 1458078093.465568, type 3 (EV_ABS), code 1 (ABS_Y), value 648
Event: time 1458078093.465568, -------------- SYN_REPORT ------------
Event: time 1458078093.472880, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 649
Event: time 1458078093.472880, type 3 (EV_ABS), code 1 (ABS_Y), value 649
Event: time 1458078093.472880, -------------- SYN_REPORT ------------
Event: time 1458078093.480192, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 650
Event: time 1458078093.480192, type 3 (EV_ABS), code 1 (ABS_Y), value 650
Event: time 1458078093.480192, -------------- SYN_REPORT ------------
Event: time 1458078093.487537, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 651
Event: time 1458078093.487537, type 3 (EV_ABS), code 1 (ABS_Y), value 651
Event: time 1458078093.487537, -------------- SYN_REPORT ------------
Event: time 1458078093.502119, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 652
Event: time 1458078093.502119, type 3 (EV_ABS), code 1 (ABS_Y), value 652
Event: time 1458078093.502119, -------------- SYN_REPORT ------------
Event: time 1458078093.538618, type 1 (EV_KEY), code 272 (BTN_LEFT), value 0
Event: time 1458078093.538618, -------------- SYN_REPORT ------------
Event: time 1458078093.618865, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 170
Event: time 1458078093.618865, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 680
Event: time 1458078093.618865, type 3 (EV_ABS), code 0 (ABS_X), value 170
Event: time 1458078093.618865, type 3 (EV_ABS), code 1 (ABS_Y), value 680
Event: time 1458078093.618865, -------------- SYN_REPORT ------------
Event: time 1458078093.662013, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value -1
Event: time 1458078093.662013, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 1458078093.662013, type 1 (EV_KEY), code 325 (BTN_TOOL_FINGER), value 0
Event: time 1458078093.662013, -------------- SYN_REPORT ------------

-- 
Andy Lutomirski
AMA Capital Management, LLC