Two finger scroll continues to scroll after movement stops

[japostoles]

I'm having an issue where, when using two finger scroll, I'll stop moving and the application keeps scrolling. This happens across apps and is not application specific.

Steps to reproduce (using latest master)

1. Start two-finger scrolling
2. Stop moving hand but keep fingers on trackpad

Page continues to scroll until fingers are lifted.

Macbook Air 2011 / Arch Linux

[rynbrd]

I'll need a few things in order to debug this:

• Your trackpad configuration in xorg.conf.
• Debug output of this happening. You'll need to recompile the driver with all debuging enabled. These logs will be in the xorg log.

[mro95]

I'm having the same issue, best way to describe it is: no scroll momentum.

This is my 00-touchpad.conf

Section "InputClass"
    MatchIsTouchpad "on"
    Identifier      "Touchpads"
    Driver          "mtrack"
    Option          "Sensitivity" "0.95"
    Option          "FingerHigh" "12"
    Option          "FingerLow" "1"
    Option          "IgnoreThumb" "true"
    Option          "IgnorePalm" "true"
    Option          "DisableOnPalm" "true"
    Option          "TapButton1" "1"
    Option          "TapButton2" "3"
    Option          "TapButton3" "2"
    Option          "TapButton4" "0"
    Option          "ClickFinger1" "1"
    Option          "ClickFinger2" "3"
    Option          "ClickFinger3" "3"
    Option          "ButtonMoveEmulate" "false"
    Option          "ButtonIntegrated" "true"
    Option          "ClickTime" "25"
    Option          "BottomEdge" "25"
    Option          "SwipeLeftButton" "8"
    Option          "SwipeRightButton" "9"
    Option          "SwipeUpButton" "0"
    Option          "SwipeDownButton" "0"
    Option          "ScrollDistance" "75"
    Option          "VertScrollDelta" "-111"
    Option          "HorizScrollDelta" "-111"
EndSection

[mro95]

Still not working...

Debug Output

  touching p(-251, 1337) d(%+d, %+d) dir(4.78) down(1453560875541)
(II) trigger_move: -142, 201
(II) is_thumb: no  83 > 70 && 6 > 25
(II) is_palm: no  4 > 40
(II) mtstate: 1 touches at event time 1453560875645 (rt 1453560875645)
(II) (EE) BUG: triggered 'if (f[f_idx])'
(EE) BUG: log.c:495 in vpnprintf()
(EE) Unsupported printf directive '+'
(EE) 
(EE) Backtrace:
(EE) 0: /usr/lib/xorg-server/Xorg (ErrorFSigSafe+0xa15) [0x5a12f5]
(EE) 1: /usr/lib/xorg-server/Xorg (LogVMessageVerbSigSafe+0x81) [0x5a1ae1]
(EE) 2: /usr/lib/xorg-server/Xorg (LogVMessageVerb+0xb5) [0x5a1d45]
(EE) 3: /usr/lib/xorg-server/Xorg (xf86Msg+0x9c) [0x4823dc]
(EE) 4: /usr/lib/xorg/modules/input/mtrack_drv.so (_init+0x6715) [0x7fb8767ed7b5]
(EE) 5: /usr/lib/xorg/modules/input/mtrack_drv.so (_init+0x5c6b) [0x7fb8767ecbcb]
(EE) 6: /usr/lib/xorg/modules/input/mtrack_drv.so (_init+0x73ef) [0x7fb8767efadf]
(EE) 7: /usr/lib/xorg-server/Xorg (DPMSSupported+0xe8) [0x476248]
(EE) 8: /usr/lib/xorg-server/Xorg (xf86SerialModemClearBits+0x2b2) [0x49f982]
(EE) 9: /usr/lib/libc.so.6 (__restore_rt+0x0) [0x7fb87f24767f]
(EE) 10: /usr/lib/libc.so.6 (__select_nocancel+0x2a) [0x7fb87f2f5e1a]
(EE) 11: /usr/lib/xorg-server/Xorg (WaitForSomething+0x1d7) [0x590c97]
(EE) 12: /usr/lib/xorg-server/Xorg (SendErrorToClient+0x10e) [0x43609e]
(EE) 13: /usr/lib/xorg-server/Xorg (remove_fs_handlers+0x453) [0x43a293]
(EE) 14: /usr/lib/libc.so.6 (__libc_start_main+0xf0) [0x7fb87f234610]
(EE) 15: /usr/lib/xorg-server/Xorg (_start+0x29) [0x4245c9]
(EE) 16: ? (?+0x29) [0x29]
(EE) 
(EE) BUG: triggered 'if (f[f_idx])'
(EE) BUG: log.c:495 in vpnprintf()
(EE) Unsupported printf directive '+'
(EE) 
(EE) Backtrace:
(EE) 0: /usr/lib/xorg-server/Xorg (ErrorFSigSafe+0xa15) [0x5a12f5]
(EE) 1: /usr/lib/xorg-server/Xorg (LogVMessageVerbSigSafe+0x81) [0x5a1ae1]
(EE) 2: /usr/lib/xorg-server/Xorg (LogVMessageVerb+0xb5) [0x5a1d45]
(EE) 3: /usr/lib/xorg-server/Xorg (xf86Msg+0x9c) [0x4823dc]
(EE) 4: /usr/lib/xorg/modules/input/mtrack_drv.so (_init+0x6715) [0x7fb8767ed7b5]
(EE) 5: /usr/lib/xorg/modules/input/mtrack_drv.so (_init+0x5c6b) [0x7fb8767ecbcb]
(EE) 6: /usr/lib/xorg/modules/input/mtrack_drv.so (_init+0x73ef) [0x7fb8767efadf]
(EE) 7: /usr/lib/xorg-server/Xorg (DPMSSupported+0xe8) [0x476248]
(EE) 8: /usr/lib/xorg-server/Xorg (xf86SerialModemClearBits+0x2b2) [0x49f982]
(EE) 9: /usr/lib/libc.so.6 (__restore_rt+0x0) [0x7fb87f24767f]
(EE) 10: /usr/lib/libc.so.6 (__select_nocancel+0x2a) [0x7fb87f2f5e1a]
(EE) 11: /usr/lib/xorg-server/Xorg (WaitForSomething+0x1d7) [0x590c97]
(EE) 12: /usr/lib/xorg-server/Xorg (SendErrorToClient+0x10e) [0x43609e]
(EE) 13: /usr/lib/xorg-server/Xorg (remove_fs_handlers+0x453) [0x43a293]
(EE) 14: /usr/lib/libc.so.6 (__libc_start_main+0xf0) [0x7fb87f234610]
(EE) 15: /usr/lib/xorg-server/Xorg (_start+0x29) [0x4245c9]
(EE) 16: ? (?+0x29) [0x29]
(EE)