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 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
