Bug 38447

Summary: Can't emulate scroll wheel with two-button point stick
Product: xorg Reporter: Kirill A. Shutemov <kirill>
Component: Input/evdevAssignee: Peter Hutterer <peter.hutterer>
Status: RESOLVED DUPLICATE QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium CC: leho
Version: unspecified   
Hardware: Other   
OS: All   
i915 platform: i915 features:

Description Kirill A. Shutemov 2011-06-18 09:25:40 UTC
I have laptop HP EliteBook 8440p which has point stick and it's great. But unlike Thinkpad it had only two button. I want to emulate middle button and scroll whell on top of it. Is it possible?

I've tried following configuration:

$ xinput list-props 11    
Device 'PS/2 Generic Mouse':
        Device Enabled (125):   1
        Coordinate Transformation Matrix (127): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
        Device Accel Profile (246):     0
        Device Accel Constant Deceleration (247):       1.000000
        Device Accel Adaptive Deceleration (248):       1.000000
        Device Accel Velocity Scaling (249):    10.000000
        Evdev Axis Inversion (250):     0, 0
        Evdev Axes Swap (252):  0
        Axis Labels (253):      "Rel X" (135), "Rel Y" (136)
        Button Labels (254):    "Button Left" (128), "Button Middle" (129), "Button Right" (130), "Button Wheel Up" (131), "Button Wheel Down" (132), "Button Horiz Wheel Left" (133), "Button Horiz Wheel Right" (134)
        Evdev Middle Button Emulation (255):    1
        Evdev Middle Button Timeout (256):      50
        Evdev Wheel Emulation (257):    1
        Evdev Wheel Emulation Axes (258):       6, 7, 4, 5
        Evdev Wheel Emulation Inertia (259):    10
        Evdev Wheel Emulation Timeout (260):    200
        Evdev Wheel Emulation Button (261):     2
        Evdev Drag Lock Buttons (262):  0

Debian sid.
Comment 1 Peter Hutterer 2011-06-19 21:14:53 UTC
if you mean emulate a middle button and then use that emulation as scroll trigger, then no, that won't work. evdev internally deals with real button numbers, not logical button numbers.
Comment 2 Kirill A. Shutemov 2011-06-20 03:52:15 UTC
And no plans to remove this restriction?
Comment 3 Peter Hutterer 2011-06-21 23:30:13 UTC
probably not, sorry. starting to emulate on top of emulated buttons opens a can of worms that I'd rather not deal with.
Comment 4 Eugene Syromyatnikov 2011-07-13 00:43:47 UTC
https://bugs.freedesktop.org/show_bug.cgi?id=39174 may be this would be useful.
Comment 5 Peter Hutterer 2011-07-27 18:47:16 UTC
Deduplicating, one bug for this topic is enough.

*** This bug has been marked as a duplicate of bug 39174 ***

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