Making sense of i2c

[Colin McKinnon]

Hi Graeme,

I got all excited there! Windows confirms "HID-compliant touch screen" is
on the i2c bus. But "No driver files are required nor have been loaded for
this device". :(

Listed elsewhere in Device manager is a "UMDF HID minidriver" supplied by
Lenovo. Disabling this device has not impacted the behaviour (yet!)

C.

On 15 January 2017 at 16:17, Graeme Thomson via Scottish <
scottish at mailman.lug.org.uk> wrote:

> Hi Colin,
> what are the hardware IDs listed for the touchscreen in device manager
> under Windows? Also, what does show up with lsusb under Linux?
>
> G
>
> On Sun, 15 Jan 2017 at 11:58 Colin McKinnon via Scottish <
> scottish at mailman.lug.org.uk> wrote:
>
> > Hi all,
> >
> > I bought my daughter a Lenovo Yoga 510-14AST for Christmas. Everything
> > works in Linux (Fedora 25) except for the touchscreen.
> >
> > Its not appearing as a USB device. At startup there is an error as it
> scans
> > the i2c bus (which seems a likely place to find the device).
> > https://bugzilla.redhat.com/show_bug.cgi?id=1409173
> >
> > Its currently running dual-boot with MSWindows. There I can see that the
> > synaptic.sys driver is loaded, but I don't know how to divine any further
> > details on how it is plumbed.
> >
> > TIA
> >
> > C.
> >
>



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