Re: Missing release event for Synaptics touchscreen

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On Sat, May 6, 2017 at 9:28 PM, Arek Burdach <arek.burdach@xxxxxxxxx> wrote:
> Hi,
>
> A week ago I've reported a bug:
> https://bugzilla.kernel.org/show_bug.cgi?id=195625 Is there anybody that can
> help me with it?

I can have a look at it.
Please attach the full outputs of hid-recorder and evemu-record in the
bugs, or it'll be difficult for us to debug it.

> I found out that some touchpads (and possible touchscreens?) are handled by
> both hid-multitouch and hid-rmi drivers. Is there a way to verify how the
> touchscreen would work on hid-rmi drivers? I've tested it with kernel
> 4.11.0-rc1 version where was this change:
> 279967a65b320d174a507498aea7d44db3fee7f4 HID: rmi: Handle all Synaptics
> touchpads using hid-rmi
> which was reverted in later kernel's version. On this version, only my
> touchpad was handled by hid-rmi, touchscreen was still handled by
> hid-multitouch. Maybe I should change something in code or in compilation
> configuration to force hid-rmi?

Well, with 279967a65 applied, the system would know if the device can
be handled through hid-rmi or not. If hid-multitouch was still used,
that means that the device was not designed to be used as a rmi device
at all (i.e. hid-rmi will not be able to talk to it).

Cheers,
Benjamin

> Or it is a wrong way to go? I would be grateful for your help.
>
> Regards,
> Arek
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