Hello Stefan.


Agreed, breaking a machine that was working before
is something we should avoid.

SInce you have one of those machines: I would like
to send you a kernel patch, which would print out the
communication coming from the touchpad, if you do
not mind becoming a beta-tester?


Thomas

On 6/16/25 4:58 PM, Stefan Sperling wrote:
> On Wed, Jun 11, 2025 at 11:28:35AM +0200, Thomas Dettbarn wrote:
>> I am hereby following up on my patch for the imt(4) submodule of the
>> OpenBSD kernel. (This time with a new subject)
>   
>> You can find the latest version here:
>>
>> https://marc.info/?l=openbsd-tech&m=174841257723328&w=2
> I have tested this patch on a Z13 gen1 thinkpad.
>
> I was planning to chime in with some positive feedback, but unfortunately
> all I have to report is that 2-finger scrolling breaks on this machine.
> Sometimes even trying to use a scrollbar instead fails. It seems something
> goes wrong with processing concurrent button-press and motion events.
>
> This machine has quite a few ims(4) devices, most of which I don't even
> know how to use.
>
> wsmouse0 is the red trackpoint knob on the keyboard:
>
> pms0 at pckbc1 (aux slot)
> wsmouse0 at pms0 mux 0
>
> As expected it is unaffected by your diff. It doesn't seem to have any
> clickable buttons associated. Those are all handled by the clickpad.
>
> wsmouse4 is the touchscreen, which remains perfectly usable with your diff.
>
> There is one imt(4) clickpad which shows up as wsmouse5. This is the device
> which provides touchpad mouse pointer movement and all clickable buttons.
> And this is where two-finger scrolling breaks.
>
> In the occasional problem case where I try to use a scrollbar and the bar
> does not react, the pointer does not react to touchpad movement and it
> seems that the button-click event is also failing to register.
>
>
> ihidev0 at iic1 addr 0xa gpio 32, vendor 0x56a product 0x52e8, WACF2200
> ihidev0: 255 report ids
> ims0 at ihidev0 reportid 1: 2 buttons
> wsmouse1 at ims0 mux 0
> hid at ihidev0 reportid 2 not configured
> hid at ihidev0 reportid 3 not configured
> hid at ihidev0 reportid 4 not configured
> hid at ihidev0 reportid 5 not configured
> hid at ihidev0 reportid 7 not configured
> hid at ihidev0 reportid 8 not configured
> hid at ihidev0 reportid 9 not configured
> hid at ihidev0 reportid 10 not configured
> hid at ihidev0 reportid 11 not configured
> hid at ihidev0 reportid 12 not configured
> hid at ihidev0 reportid 13 not configured
> hid at ihidev0 reportid 14 not configured
> hid at ihidev0 reportid 15 not configured
> hid at ihidev0 reportid 16 not configured
> hid at ihidev0 reportid 17 not configured
> hid at ihidev0 reportid 18 not configured
> hid at ihidev0 reportid 19 not configured
> ims1 at ihidev0 reportid 20: 3 buttons, tip, barrel, eraser
> wsmouse2 at ims1 mux 0
> ims2 at ihidev0 reportid 27: 0 buttons
> wsmouse3 at ims2 mux 0
> ims3 at ihidev0 reportid 28: 1 button, tip
> wsmouse4 at ims3 mux 0
> hid at ihidev0 reportid 31 not configured
> hid at ihidev0 reportid 255 not configured
> dwiic2 at acpi0 I2CC addr 0xfedc4000/0x1000 irq 4
> iic2 at dwiic2
> ihidev1 at iic2 addr 0x15 gpio 8, vendor 0x4f3 product 0x3231, ELAN06A0
> ihidev1: 115 report ids
> imt0 at ihidev1: clickpad, 5 contacts
> wsmouse5 at imt0 mux 0
> ims4 at ihidev1 reportid 1: 2 buttons
> wsmouse6 at ims4 mux 0
> hid at ihidev1 reportid 5 not configured
> hid at ihidev1 reportid 6 not configured
> hid at ihidev1 reportid 7 not configured
> hid at ihidev1 reportid 9 not configured
> hid at ihidev1 reportid 10 not configured
> hid at ihidev1 reportid 11 not configured
> hid at ihidev1 reportid 12 not configured
> hid at ihidev1 reportid 13 not configured
> ims5 at ihidev1 reportid 14: 0 buttons
> wsmouse7 at ims5 mux 0
> hid at ihidev1 reportid 44 not configured
> hid at ihidev1 reportid 92 not configured
> hid at ihidev1 reportid 115 not configured