Bug 93952

Summary:	acceleration problem
Product:	Wayland	Reporter:	nicmus <glncst>
Component:	libinput	Assignee:	Wayland bug list <wayland-bugs>
Status:	RESOLVED INVALID	QA Contact:
Severity:	normal
Priority:	medium	CC:	peter.hutterer
Version:	1.5.0
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:
Attachments:	libinput movement synaptics movement synaptics

Description nicmus 2016-02-01 06:41:16 UTC

Hi,

I split up my previous topic as requested.

The problem I face is that the acceleration profile I experience is always flat no matter what the speed is set to. 

That is to say, the acceleration it's kind of fixed to a value which depends on the speed setting. 

It looks like the mouse cursor movement is just a 'zoomed' version of the touchpad movement, with a 'zooming factor' determined by the above mentioned speed property.

Comment 1 nicmus 2016-02-01 07:02:09 UTC

Created attachment 121432 [details]
libinput movement

driver:  libinput
setting: speed=0.0

1st movement from left to right covers the entire touchpad at slow speed
2nd movement from left to right covers the entire touchpad at fast speed

Comment 2 nicmus 2016-02-01 07:03:09 UTC

Created attachment 121433 [details]
synaptics movement

driver:  synaptics
setting: speed=0.0

1st movement from left to right covers the entire touchpad at slow speed
2nd movement from left to right covers the entire touchpad at fast speed

Comment 3 nicmus 2016-02-01 07:05:48 UTC

Created attachment 121434 [details]
synaptics

driver:  synaptics
setting: speed=0.0

1st movement from left to right covers the entire touchpad at slow speed
2nd movement from left to right covers the entire touchpad at fast speed

Comment 4 Peter Hutterer 2016-02-03 07:30:07 UTC

can you try the patch in bug 93503? I noticed the movement is a bit jerky, I wonder if that's the screencast or the device.

If the patch has no effect, please also attach two evemu recordings, one slow, one fast one.

Comment 5 Peter Hutterer 2016-08-30 06:44:50 UTC

closing after 6 months of silence, please reopen if required

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