Hi Mustafa, On Sat, Sep 1, 2018 at 5:39 PM Mustafa Kuscu <mustafakuscu@xxxxxxxxx> wrote: > > On Sat, Sep 1, 2018 at 6:35 PM Mustafa Kuscu <mustafakuscu@xxxxxxxxx> wrote: > > First, attached are the hid-recorder outputs for the good and bad cases. > > > > Secondly, after bisecting across 4.17.15 (good) and 4.18.2 (bad), the > > following commit from April appears to be causing the issue > > (hid-multitouch): > > > > # first bad commit: [7f81c8db54898a793cc2916a936f6bf3fca41434] HID: > > multitouch: simplify the settings of the various features > > > > I don't know how to fix that and just found time to do the bisection. Any ideas? Thanks for bisecting. FYI, I am already tracking this issue in https://bugzilla.kernel.org/show_bug.cgi?id=200899 Now that you (both) pinpointed the culprit, it should be easy to see what differences are between the 2 commits, and provide a fix. I'll try to debug that today. If you want to go ahead, you can compare what is sent to the touchpad by adding i2c_hid.debug=1 to the kernel boot command line. The output should differ in v4.18, and this must be the culprit :) Cheers, Benjamin > > > > Also I should mention that, double tapping on the right button works > at 7f81c8 but clicking with double fingers do not work.. which is very > important to mimic Mac's trackpad behaviour.
