[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

--- Comment #18 from Peter Hutterer  ---
yeah, if that sysfs file never shows up, then there isn't much we can do, sorry

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

--- Comment #17 from Nate Graham  ---
Looks like my touchpad hardware is PS/2 only. :(

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

--- Comment #16 from Nate Graham  ---
OK, so I am now running libinput from git master and I have the 4.13.0 kernel,
but there is still no improvement here. xinput still shows "SynPS/2 Synaptics
TouchPad"

How do I turn on RMI4 mode?

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

--- Comment #15 from Nate Graham  ---
Thanks Peter. Is there anywhere I find this information for myself so I don't
have to bug you and clutter up closed bugzilla tickets asking?

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

--- Comment #14 from Peter Hutterer  ---
There was a bit of a setback with 4.11, I think 4.12 is the new goal. Also note
that you may see a ps2 touchpad *in addition* to the RMI4 touchpad but that one
won't send events. just check with evemu-record if it sends events, if not,
then you're on RMI4 already.

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

Nate Graham  changed:

   What|Removed |Added

 Status|RESOLVED|VERIFIED

--- Comment #13 from Nate Graham  ---
Okay, so I'm running Kernel 4.11 in openSUSE Tumbleweed now. `xinput` still
says my touchpad is using PS/2.

What's needed to get the touchpad to use the RMI4 protocol? Is this enabled in
any extant kernel version? Is it planned for one? How would I go about finding
this information for myself?

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

--- Comment #12 from Nate Graham  ---
Awesome, thanks!

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

Peter Hutterer  changed:

   What|Removed |Added

 Resolution|--- |FIXED
 Status|NEW |RESOLVED

--- Comment #11 from Peter Hutterer  ---
I just tested this on my T450p with a RMI4-enabled kernel and the problem does
go away. The refresh rate on ps/2 with two fingers down is ca 20ms (as opposed
to the usual ca 10ms. On rmi4, even with three fingers down it stays at ca
10ms.

I'm closing this bug because it's not something we could fix in libinput anyway
and the upstream kernel will eventually take care of this.

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

--- Comment #10 from Peter Hutterer  ---
yeah, there are still a few bits missing, you'll have to grab benjamin's kernel
to get everything working. the 4.10 kernel is missing the intertouch
parameters, etc.

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

--- Comment #8 from Peter Hutterer  ---
see https://bugs.freedesktop.org/show_bug.cgi?id=99064#c22

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

--- Comment #7 from Nate Graham  ---
evemu-record info:
N: SynPS/2 Synaptics TouchPad
I: 0011 0002 0007 01b1


$ udevadm info /sys/class/input/event4 | grep -i synap
E: LIBINPUT_MODEL_SYNAPTICS_SERIAL_TOUCHPAD=1


So looks like PS/2. Why isn't it using RMI4 slash do I need to explicitly force
it to do so?

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

Nate Graham  changed:

   What|Removed |Added

 Status|NEEDINFO|NEW

--- Comment #5 from Nate Graham  ---
How can I definitively tell whether it's using PS/2 or RMI4? I do see this:

$ xinput | grep -i TouchPad
⎜   ↳ SynPS/2 Synaptics TouchPadid=14   [slave  pointer  (2)]

..Which suggests PS/2. But I'm using a 4.10 series Kernel. Is there anything
special that needs to be done to enable RMI4 mode/code/whatever?

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

Peter Hutterer  changed:

   What|Removed |Added

 Status|NEW |NEEDINFO
 CC||peter.hutte...@who-t.net

--- Comment #4 from Peter Hutterer  ---
that's an artefact of PS/2, you'll notice that the framerate (and usually
resolution) goes down whenever there are multiple fingers on the pad. Do you
see the same happen with RMI4? If not, then we're "good", this is unfortunately
a cantfix for PS/2

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

Michael Catanzaro  changed:

   What|Removed |Added

  Component|wayland |libinput
 CC||mcatanz...@gnome.org

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

--- Comment #3 from Nate Graham  ---
Created attachment 128739
  --> https://bugs.freedesktop.org/attachment.cgi?id=128739=edit
evemu recording of drawing circles with no thumb on the pad with areas
behavior, showing normal resolution

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

--- Comment #2 from Nate Graham  ---
Created attachment 128738
  --> https://bugs.freedesktop.org/attachment.cgi?id=128738=edit
evemu recording of drawing circles with a thumb on the pad with areas behavior,
showing slightly decreased resolution

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

Nate Graham  changed:

   What|Removed |Added

 CC||pointedst...@zoho.com

--- Comment #1 from Nate Graham  ---
Created attachment 128737
  --> https://bugs.freedesktop.org/attachment.cgi?id=128737=edit
evemu recording of drawing circles with no thumb on the pad with clickfinger,
showing normal resolution

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[Wayland-bugs] [Bug 99267] Cursor resolution/refresh rate decreases when a thumb is resting on the pad, especially with clickfinger behavior

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=99267

Bug ID: 99267
   Summary: Cursor resolution/refresh rate decreases when a thumb
is resting on the pad, especially with clickfinger
behavior
   Product: Wayland
   Version: 1.5.0
  Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
  Severity: normal
  Priority: medium
 Component: wayland
  Assignee: wayland-bugs@lists.freedesktop.org
  Reporter: pointedst...@zoho.com

Created attachment 128736
  --> https://bugs.freedesktop.org/attachment.cgi?id=128736=edit
evemu recording of drawing circles with a thumb on the pad with clickfinger,
showing decreased resolution

Hardware: HP Spectre x360 with a Synaptics clickpad
Software: Fedora 25 + GNOME 3.22 + libinput built from git master  as of today

My touchpad's apparent resolution seems to be reduced when a thumb is rested on
the touchpad. When I draw small circles on the pad with only my pointer finger,
the refresh rate appears high, and the pointer seems to be moving at like 60
hz, or as fast as the screen can re-draw it. When I do the same with a thumb on
the bottom of the pad, the apparent refresh rate slows down to something
looking more like 20 hz.

This is extremely noticeable with the "clickfinger" behavior. Less so with
"areas', but still observable if you're looking for it.

If this is dependent on RMI4 in Kernel 4.10, I have that on my machine and 4.10
is just around the corner, with 4.10-rc2 already out in the wild.

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