Discussion :

[anje84]

Bonjour.

Je viens vers vous après plusieurs tentative de faire fonctionner correctement le touchpad mon macbook4.1.
qui ne fut jamais résolu après mainte manipulation de synclient et du fichier xorg.conf....

Aujourd’hui j'ai un nouveau pc portable asus g46v(14") touchpad elantech avec ubuntu gnome d'installer dessus et je retrouve exactement le même problème,c'est a dire un touchpad pas précis. Les fonction intermédiaire ne m'intéresse pas pour le moment même si j'arrive a les activer(zoom,défilement...)je cherche juste a avoir un pointeur qui marche normalement.Le pointeur n'est pas précis et dans les mouvements en diagonale il bouge comme un escalier ,j'ai l'impression que le ratio définition écran par rapport au touchpad et mal definit.

Ayant déjà eu le même problème sur mon macbook (13") avec un touchpad synaptics j'en déduit que le problème réside dans les définition d'ecran exotique qui ne sont pas bien pris en charge.

Il y aurait-il quelqu’un ayant déjà été confronté a ce problème et éventuellement qui aurais pu le solutionner?

voici une image sur ce post qui en dit plus on voit bien que les arrondit sont impossible et le pointeur fait un angle a 90°.
http://ubuntuforums.org/showthread.php?t=813884&page=5

Je rajoute mes log et fichier conf si sa peut eclairé quelqu'un

synclient -l:

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anje@anje-G46VW:~$ synclient -l
Parameter settings:
    LeftEdge                = 2915
    RightEdge               = 2915
    TopEdge                 = 1374
    BottomEdge              = 1374
    FingerLow               = 7
    FingerHigh              = 8
    MaxTapTime              = 180
    MaxTapMove              = 148
    MaxDoubleTapTime        = 180
    SingleTapTimeout        = 180
    ClickTime               = 100
    EmulateMidButtonTime    = 0
    EmulateTwoFingerMinZ    = 282
    EmulateTwoFingerMinW    = 7
    VertScrollDelta         = -111
    HorizScrollDelta        = -111
    VertEdgeScroll          = 1
    HorizEdgeScroll         = 0
    CornerCoasting          = 0
    VertTwoFingerScroll     = 1
    HorizTwoFingerScroll    = 1
    MinSpeed                = 1
    MaxSpeed                = 2
    AccelFactor             = 0.0594354
    TouchpadOff             = 0
    LockedDrags             = 0
    LockedDragTimeout       = 5000
    RTCornerButton          = 2
    RBCornerButton          = 3
    LTCornerButton          = 0
    LBCornerButton          = 0
    TapButton1              = 1
    TapButton2              = 3
    TapButton3              = 0
    ClickFinger1            = 1
    ClickFinger2            = 3
    ClickFinger3            = 0
    CircularScrolling       = 0
    CircScrollDelta         = 0.1
    CircScrollTrigger       = 0
    PalmDetect              = 0
    PalmMinWidth            = 10
    PalmMinZ                = 200
    CoastingSpeed           = 20
    CoastingFriction        = 50
    PressureMotionMinZ      = 30
    PressureMotionMaxZ      = 160
    PressureMotionMinFactor = 1
    PressureMotionMaxFactor = 1
    ResolutionDetect        = 1
    GrabEventDevice         = 1
    TapAndDragGesture       = 1
    AreaLeftEdge            = 0
    AreaRightEdge           = 0
    AreaTopEdge             = 0
    AreaBottomEdge          = 0
    HorizHysteresis         = 16
    VertHysteresis          = 0
    ClickPad                = 1
    RightButtonAreaLeft     = 1518
    RightButtonAreaRight    = 0
    RightButtonAreaTop      = 1190
    RightButtonAreaBottom   = 0
    MiddleButtonAreaLeft    = 0
    MiddleButtonAreaRight   = 0
    MiddleButtonAreaTop     = 0
    MiddleButtonAreaBottom  = 0

xinput:

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Device 'ETPS/2 Elantech Touchpad':
	Device Enabled (151):	1
	Coordinate Transformation Matrix (153):	1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
	Device Accel Profile (282):	1
	Device Accel Constant Deceleration (283):	2.000000
	Device Accel Adaptive Deceleration (284):	1.000000
	Device Accel Velocity Scaling (285):	12.500000
	Synaptics Edges (308):	2915, 2915, 1374, 1374
	Synaptics Finger (309):	7, 8, 0
	Synaptics Tap Time (310):	180
	Synaptics Tap Move (311):	148
	Synaptics Tap Durations (312):	180, 180, 100
	Synaptics ClickPad (313):	1
	Synaptics Middle Button Timeout (314):	0
	Synaptics Two-Finger Pressure (315):	282
	Synaptics Two-Finger Width (316):	7
	Synaptics Scrolling Distance (317):	-111, -111
	Synaptics Edge Scrolling (318):	1, 0, 0
	Synaptics Two-Finger Scrolling (319):	1, 1
	Synaptics Move Speed (320):	1.000000, 2.000000, 0.059435, 0.000000
	Synaptics Off (321):	0
	Synaptics Locked Drags (322):	0
	Synaptics Locked Drags Timeout (323):	5000
	Synaptics Tap Action (324):	2, 3, 0, 0, 1, 3, 0
	Synaptics Click Action (325):	1, 3, 0
	Synaptics Circular Scrolling (326):	0
	Synaptics Circular Scrolling Distance (327):	0.100000
	Synaptics Circular Scrolling Trigger (328):	0
	Synaptics Palm Detection (329):	0
	Synaptics Palm Dimensions (330):	10, 200
	Synaptics Coasting Speed (331):	20.000000, 50.000000
	Synaptics Pressure Motion (332):	30, 160
	Synaptics Pressure Motion Factor (333):	1.000000, 1.000000
	Synaptics Resolution Detect (334):	1
	Synaptics Grab Event Device (335):	1
	Synaptics Gestures (336):	1
	Synaptics Capabilities (337):	1, 0, 0, 1, 1, 1, 1
	Synaptics Pad Resolution (338):	33, 32
	Synaptics Area (339):	0, 0, 0, 0
	Synaptics Soft Button Areas (340):	1518, 0, 1190, 0, 0, 0, 0, 0
	Synaptics Noise Cancellation (341):	16, 0
	Device Product ID (271):	2, 14
	Device Node (272):	"/dev/input/event11"

xorg log:

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anje@anje-G46VW:~$ cat /var/log/Xorg.0.log | grep -i touch
[    22.994] (II) config/udev: Adding input device ETPS/2 Elantech Touchpad (/dev/input/event11)
[    22.994] (**) ETPS/2 Elantech Touchpad: Applying InputClass "evdev touchpad catchall"
[    22.994] (**) ETPS/2 Elantech Touchpad: Applying InputClass "touchpad catchall"
[    22.994] (**) ETPS/2 Elantech Touchpad: Applying InputClass "Default clickpad buttons"
[    22.994] (**) ETPS/2 Elantech Touchpad: Applying InputClass "touchpad catchall"
[    22.994] (**) ETPS/2 Elantech Touchpad: Applying InputClass "Default clickpad buttons"
[    22.994] (**) ETPS/2 Elantech Touchpad: Applying InputClass "touchpad catchall"
[    22.994] (**) ETPS/2 Elantech Touchpad: Applying InputClass "Default clickpad buttons"
[    22.994] (II) Using input driver 'synaptics' for 'ETPS/2 Elantech Touchpad'
[    22.994] (**) ETPS/2 Elantech Touchpad: always reports core events
[    23.016] (II) synaptics: ETPS/2 Elantech Touchpad: found clickpad property
[    23.016] (--) synaptics: ETPS/2 Elantech Touchpad: x-axis range 0 - 3036 (res 32)
[    23.016] (--) synaptics: ETPS/2 Elantech Touchpad: y-axis range 0 - 1452 (res 33)
[    23.016] (--) synaptics: ETPS/2 Elantech Touchpad: pressure range 0 - 255
[    23.016] (--) synaptics: ETPS/2 Elantech Touchpad: finger width range 0 - 15
[    23.016] (--) synaptics: ETPS/2 Elantech Touchpad: buttons: left double triple
[    23.016] (--) synaptics: ETPS/2 Elantech Touchpad: Vendor 0x2 Product 0xe
[    23.016] (--) synaptics: ETPS/2 Elantech Touchpad: touchpad found
[    23.016] (**) ETPS/2 Elantech Touchpad: always reports core events
[    23.032] (II) XINPUT: Adding extended input device "ETPS/2 Elantech Touchpad" (type: TOUCHPAD, id 15)
[    23.032] (**) synaptics: ETPS/2 Elantech Touchpad: (accel) MinSpeed is now constant deceleration 2.0
[    23.032] (**) synaptics: ETPS/2 Elantech Touchpad: (accel) MaxSpeed is now 2.00
[    23.032] (**) synaptics: ETPS/2 Elantech Touchpad: (accel) AccelFactor is now 0.059
[    23.032] (**) ETPS/2 Elantech Touchpad: (accel) keeping acceleration scheme 1
[    23.032] (**) ETPS/2 Elantech Touchpad: (accel) acceleration profile 1
[    23.032] (**) ETPS/2 Elantech Touchpad: (accel) acceleration factor: 2.000
[    23.032] (**) ETPS/2 Elantech Touchpad: (accel) acceleration threshold: 4
[    23.032] (--) synaptics: ETPS/2 Elantech Touchpad: touchpad found
[    23.032] (II) config/udev: Adding input device ETPS/2 Elantech Touchpad (/dev/input/mouse1)
[    23.032] (**) ETPS/2 Elantech Touchpad: Ignoring device from InputClass "touchpad ignore duplicates"

synaptics conf:

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# Example xorg.conf.d snippet that assigns the touchpad driver
# to all touchpads. See xorg.conf.d(5) for more information on
# InputClass.
# DO NOT EDIT THIS FILE, your distribution will likely overwrite
# it when updating. Copy (and rename) this file into
# /etc/X11/xorg.conf.d first.
# Additional options may be added in the form of
#   Option "OptionName" "value"
#
Section "InputClass"
        Identifier "ETPS/2 Elantech Touchpad"
        Driver "synaptics"
        MatchIsTouchpad "on"
	Option "SHMConfig" "true"
	Option "HorizHysteresis" "0.5"
        Option "VertHysteresis"  "0"
        Option "MinSpeed" "0.5"
        Option "MaxSpeed" "1"
        option "HorizTwoFingerScroll" "1"
	option "VertScrollDelta" "-111"
	option "HorizScrollDelta" "-111"
	option "FingerLow" "7"
	option "FingerHigh" "8"
	option "TopEdge" "1374"
	option "BottomEdge" "1374"
	option "LeftEdge" "2915"
	option "RightEdge" "2915"
	option "FingerLow" "5"
	option "FingerHigh" "35"
	Option "JumpyCursorThreshold" "200"
	option "FingerPress" "100"
	option "EdgeMotionMinZ" "10"
	option "ResolutionDetect" "true"
        MatchIsTouchpad "on"
# This option is recommend on all Linux systems using evdev, but cannot be
# enabled by default. See the following link for details:
# http://who-t.blogspot.com/2010/11/how-to-ignore-configuration-errors.html
      MatchDevicePath "/dev/input/event*"
EndSection
 
Section "InputClass"
        Identifier "touchpad ignore duplicates"
        MatchIsTouchpad "on"
        MatchOS "Linux"
        MatchDevicePath "/dev/input/mouse*"
        Option "Ignore" "on"
EndSection
 
# This option enables the bottom right corner to be a right button on
# non-synaptics clickpads.
# This option is only interpreted by clickpads.
Section "InputClass"
        Identifier "Default clickpad buttons"
        MatchDriver "synaptics"
        Option "SoftButtonAreas" "50% 0 82% 0 0 0 0 0"
#       To disable the bottom edge area so the buttons only work as buttons,
#       not for movement, set the AreaBottomEdge
#       Option "AreaBottomEdge" "82%"
EndSection
 
# This option disables software buttons on Apple touchpads.
# This option is only interpreted by clickpads.
Section "InputClass"
        Identifier "Disable clickpad buttons on Apple touchpads"
        MatchProduct "Apple|bcm5974"
        MatchDriver "synaptics"
        Option "SoftButtonAreas" "0 0 0 0 0 0 0 0"
EndSection

Merci de votre intérêt a cette question, je pense qu'elle touche beaucoup d'utilisateur.

[anje84]

Après plus d'un an et demi de recherche voici le saint graal

Si cela peut aider quelqu'un voici mon 50-synaptics.conf, j'ai une résolution d’écran de 1600x900 un touchpad qui mesure environ 13cm de long et 52,5 de large c'est un Elantech Touchpad sur un pc asus G45vw avec ubuntu 13.10

50-synaptics.conf:

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# Example xorg.conf.d snippet that assigns the touchpad driver
# to all touchpads. See xorg.conf.d(5) for more information on
# InputClass.
# DO NOT EDIT THIS FILE, your distribution will likely overwrite
# it when updating. Copy (and rename) this file into
# /etc/X11/xorg.conf.d first.
# Additional options may be added in the form of
#   Option "OptionName" "value"
#
Section "InputClass"
        Identifier "Touchpad"
        Driver "synaptics"
        MatchIsTouchpad "on"
    Option "SHMConfig" "true"
    Option "HorizHysteresis" "15"
        Option "VertHysteresis"  "15"
        Option "MinSpeed" "0.5"
        Option "MaxSpeed" "2.0"
        Option "AccelFactor" "0.5"
 # fix touchpad resolution
        Option "VertResolution" "100"
        Option "HorizResolution" "60"
        Option "HorizTwoFingerScroll" "1"
    Option "VertScrollDelta" "-111"
    Option "HorizScrollDelta" "-111"
    Option "TopEdge" "1374"
    Option "BottomEdge" "1374"
    Option "LeftEdge" "2915"
    Option "RightEdge" "2915"
    Option "FingerLow" "-10"
    Option "FingerHigh" "5"
    Option "JumpyCursorThreshold" "280"
    Option "FingerPress" "200"
    Option "EdgeMotionMinZ" "10"
    Option "ResolutionDetect" "true"
# tweak the X-server pointer acceleration
        Option "AccelerationProfile" "2"
        Option "AdaptiveDeceleration" "16"
        Option "ConstantDeceleration" "16"
        Option "VelocityScale" "64"
        Option "AccelerationNumerator" "30"
        Option "AccelerationDenominator" "10"
        Option "AccelerationThreshold" "10"
        MatchIsTouchpad "on"
# This option is recommend on all Linux systems using evdev, but cannot be
# enabled by default. See the following link for details:
# <a href="http://who-t.blogspot.com/2010/11/how-to-ignore-configuration-errors.html" target="_blank">http://who-t.blogspot.com/2010/11/ho...on-errors.html</a>
      MatchDevicePath "/dev/input/event*"
EndSection
 
Section "InputClass"
        Identifier "touchpad ignore duplicates"
        MatchIsTouchpad "on"
        MatchOS "Linux"
        MatchDevicePath "/dev/input/mouse*"
        Option "Ignore" "on"
EndSection
 
# This option enables the bottom right corner to be a right button on
# non-synaptics clickpads.
# This option is only interpreted by clickpads.
Section "InputClass"
        Identifier "Default clickpad buttons"
        MatchDriver "synaptics"
        Option "SoftButtonAreas" "50% 0 82% 0 0 0 0 0"
#       To disable the bottom edge area so the buttons only work as buttons,
#       not for movement, set the AreaBottomEdge
#       Option "AreaBottomEdge" "82%"
EndSection
 
# This option disables software buttons on Apple touchpads.
# This option is only interpreted by clickpads.
Section "InputClass"
        Identifier "Disable clickpad buttons on Apple touchpads"
        MatchProduct "Apple|bcm5974"
        MatchDriver "synaptics"
        Option "SoftButtonAreas" "0 0 0 0 0 0 0 0"
EndSection