Bug 102524

Summary: No middle button emulation property
Product: Wayland Reporter: rvernica
Component: libinputAssignee: Wayland bug list <wayland-bugs>
Status: RESOLVED NOTABUG QA Contact:
Severity: normal    
Priority: medium CC: peter.hutterer
Version: unspecified   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:

Description rvernica 2017-09-03 04:12:48 UTC 
When I try to enable middle button emulation, it seems there is no such property for my mouse/touchpad. This is the laptop build-in mouse/touchpad. 

> xinput list
⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
⎜   ↳ xwayland-relative-pointer:13            	id=7	[slave  pointer  (2)]
⎜   ↳ xwayland-pointer:13                     	id=6	[slave  pointer  (2)]
⎣ Virtual core keyboard                   	id=3	[master keyboard (2)]
    ↳ Virtual core XTEST keyboard             	id=5	[slave  keyboard (3)]
    ↳ xwayland-keyboard:13                    	id=8	[slave  keyboard (3)]

> xinput list-props
Device 'Virtual core pointer':
	Device Enabled (119):	1
	Coordinate Transformation Matrix (121):	1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000

> xinput list-props
Device 'Virtual core XTEST pointer':
	Device Enabled (119):	1
	Coordinate Transformation Matrix (121):	1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
	XTEST Device (238):	1

> xinput list-props 7
Device 'xwayland-relative-pointer:13':
	Device Enabled (119):	1
	Coordinate Transformation Matrix (121):	1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
	Device Accel Profile (244):	0
	Device Accel Constant Deceleration (245):	1.000000
	Device Accel Adaptive Deceleration (246):	1.000000
	Device Accel Velocity Scaling (247):	10.000000

> xinput list-props 6
Device 'xwayland-pointer:13':
	Device Enabled (119):	1
	Coordinate Transformation Matrix (121):	1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
	Device Accel Profile (244):	0
	Device Accel Constant Deceleration (245):	1.000000
	Device Accel Adaptive Deceleration (246):	1.000000
	Device Accel Velocity Scaling (247):	10.000000
Comment 1 rvernica 2017-09-03 20:04:50 UTC 
I'm on Fedora 26 and Wayland. The packages are standard packages, up to date, from Fedora 26 repository.

> cat /etc/redhat-release
Fedora release 26 (Twenty Six)

> uname -a
Linux android 4.12.5-300.fc26.x86_64 #1 SMP Mon Aug 7 15:27:25 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

> dnf info libinput
Last metadata expiration check: 0:53:36 ago on Sun 03 Sep 2017 12:10:50 PM PDT.
Installed Packages
Name         : libinput
Version      : 1.8.0
Release      : 2.fc26
Arch         : x86_64
Size         : 388 k
Source       : libinput-1.8.0-2.fc26.src.rpm
Repo         : @System
From repo    : updates
Summary      : Input device library
URL          : http://www.freedesktop.org/wiki/Software/libinput/
License      : MIT
Description  : libinput is a library that handles input devices for display servers and other
             : applications that need to directly deal with input devices.
             : 
             : It provides device detection, device handling, input device event processing
             : and abstraction so minimize the amount of custom input code the user of
             : libinput need to provide the common set of functionality that users expect.

> dnf info libwayland-server
Last metadata expiration check: 0:44:55 ago on Sun 03 Sep 2017 12:10:50 PM PDT.
Installed Packages
Name         : libwayland-server
Version      : 1.13.0
Release      : 1.fc26
Arch         : x86_64
Size         : 78 k
Source       : wayland-1.13.0-1.fc26.src.rpm
Repo         : @System
From repo    : fedora
Summary      : Wayland server library
URL          : http://wayland.freedesktop.org/
License      : MIT
Description  : Wayland server library
Comment 2 Peter Hutterer 2017-09-04 03:49:22 UTC 
From https://who-t.blogspot.com.au/2017/05/xinput-list-shows-xwayland-pointer.html:
"TLDR: If you see devices like "xwayland-pointer" show up in your xinput list output, then you are running under a Wayland compositor and debugging/configuration with xinput will not work. "

Changing settings under wayland requires changing the compositor-supported configuration, most likely gnome in your case.

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