Feedback on Synaptics with ClickPad

[Peter Hutterer]

Hi Thierry,

This list is for some low-level input tools, not for the synaptics driver.
Please send your email to xorg-devel at lists.freedesktop.org instead, thanks.

Cheers,
   Peter

On Sun, Sep 07, 2014 at 02:22:40AM +0000, Thierry Moreau wrote:
> Hi,
> 
> first of all thanks for supporting this fairly new pointer device
> configuration.
> 
> I encounter this because I install Linux from a barebone distribution (Crux
> 3.1) for reasons unrelated to the X system.
> 
> Configuration summary:
> Kernel 3.16.1
> xorg-xf86-input-synaptics 1.8.0
> xorg.conf manually edited.
> Lenovo Thinkpad Edge E540 (same as T440)
> 
> I see two difficulties:
> 
> Despite
> 	Option		"ClickFinger2"	"0"
> 	Option		"ClickFinger3"	"0"
> in the configuration, xev still reports button events for buttons 2, 4, and
> 5 (mixed with buttons 1 and 3, so they woud be unreliable) when I play with
> 2 or 3 fingers on the clickpad.
> 
> I guess I can live with predictable buttons 1 and 3, so I can patch (dirty)
> the source to ignore other button values. But maybe my whole experience with
> the clickpad/linux combination is affected more seriously by the second
> difficulty (I do not have much experience with a fully functional and
> ergonomics touchpad ...).
> 
> So I venture to expose my second difficulty in which my own ignorance may be
> part of the problem.
> 
> I have doubts about the X and Y coordinates translation in my configuration.
> From the X log file portion attached below, the following two lines worry
> me:
> 
> [ 42758.110] (--) synaptics: SynPS/2 Synaptics TouchPad: x-axis range 1472 -
> 5112 (res 42)
> [ 42758.110] (--) synaptics: SynPS/2 Synaptics TouchPad: y-axis range 1408 -
> 3834 (res 42)
> 
> My concern is that the geometry parameters expressed as percentage in the
> configuration would be distorted by the above ranges not being zero-based.
> For instance, the configuration lines:
> 
> [ 42758.110] (**) Option "SoftButtonAreas" "50% 0 82% 0 0 0 0 0"
> [ 42758.110] (**) Option "SecondarySoftButtonAreas" "58% 0 0 8% 42% 58% 0
> 8%"
> 
> In order to be autonomous in advancing this troubleshooting, I lack basic
> knowledge of the X system configuration and properties mechanisms. E.g. why
> the above ClickFinger options do not appear effective, or the X and Y axis
> orientations, or a utility to display raw mouse events (xev reports
> coordinates for the monitored window).
> 
> As a summary, I was able to advance the installation details (up-to-date
> software, kernel configuration, xorg.conf well adjusted to system
> configuration) and the device basically works for me. However, fine-tuning
> the touchpad parameters remains difficult.
> 
> I may provide additional details if it can help you improve the synaptics
> linux support. Thanks a lot for this!
> 
> -- Thierry Moreau
> 
> --- Attachment
> [ 42758.085] (II) config/udev: Adding input device SynPS/2 Synaptics
> TouchPad (/dev/input/event5)
> [ 42758.085] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "evdev
> touchpad catchall"
> [ 42758.085] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad
> catchall"
> [ 42758.085] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "Default
> clickpad buttons"
> [ 42758.085] (II) Using input driver 'synaptics' for 'SynPS/2 Synaptics
> TouchPad'
> [ 42758.085] (**) SynPS/2 Synaptics TouchPad: always reports core events
> [ 42758.085] (**) Option "Device" "/dev/input/event5"
> [ 42758.110] (II) synaptics: SynPS/2 Synaptics TouchPad: found clickpad
> property
> [ 42758.110] (II) synaptics: SynPS/2 Synaptics TouchPad: found top buttonpad
> property
> [ 42758.110] (--) synaptics: SynPS/2 Synaptics TouchPad: x-axis range 1472 -
> 5112 (res 42)
> [ 42758.110] (--) synaptics: SynPS/2 Synaptics TouchPad: y-axis range 1408 -
> 3834 (res 42)
> [ 42758.110] (--) synaptics: SynPS/2 Synaptics TouchPad: pressure range 0 -
> 255
> [ 42758.110] (--) synaptics: SynPS/2 Synaptics TouchPad: finger width range
> 0 - 15
> [ 42758.110] (--) synaptics: SynPS/2 Synaptics TouchPad: buttons: left
> double triple
> [ 42758.110] (--) synaptics: SynPS/2 Synaptics TouchPad: Vendor 0x2 Product
> 0x7
> [ 42758.110] (**) Option "SoftButtonAreas" "50% 0 82% 0 0 0 0 0"
> [ 42758.110] (**) Option "SecondarySoftButtonAreas" "58% 0 0 8% 42% 58% 0
> 8%"
> [ 42758.110] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
> [ 42758.110] (**) SynPS/2 Synaptics TouchPad: always reports core events
> [ 42758.123] (**) Option "config_info"
> "udev:/sys/devices/platform/i8042/serio1/input/input6/event5"
> [ 42758.123] (II) XINPUT: Adding extended input device "SynPS/2 Synaptics
> TouchPad" (type: TOUCHPAD, id 9)
> [ 42758.123] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) MinSpeed is
> now constant deceleration 2.5
> [ 42758.123] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) MaxSpeed is
> now 1.75
> [ 42758.123] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) AccelFactor
> is now 0.046
> [ 42758.123] (**) SynPS/2 Synaptics TouchPad: (accel) keeping acceleration
> scheme 1
> [ 42758.123] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration profile 1
> [ 42758.123] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration factor:
> 2.000
> [ 42758.123] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration
> threshold: 4
> [ 42758.123] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
> [ 42758.123] (II) config/udev: Adding input device SynPS/2 Synaptics
> TouchPad (/dev/input/mouse0)
> [ 42758.123] (**) SynPS/2 Synaptics TouchPad: Ignoring device from
> InputClass "touchpad ignore duplicates"
> [ 42758.123] (II) config/udev: Adding input device TPPS/2 IBM TrackPoint
> (/dev/input/event6)
> [ 42758.123] (**) TPPS/2 IBM TrackPoint: Applying InputClass "evdev pointer
> catchall"
> [ 42758.123] (II) Using input driver 'evdev' for 'TPPS/2 IBM TrackPoint'
> [ 42758.123] (**) TPPS/2 IBM TrackPoint: always reports core events
> [ 42758.123] (**) evdev: TPPS/2 IBM TrackPoint: Device: "/dev/input/event6"
> [ 42758.123] (--) evdev: TPPS/2 IBM TrackPoint: Vendor 0x2 Product 0xa
> [ 42758.123] (--) evdev: TPPS/2 IBM TrackPoint: Found 3 mouse buttons
> [ 42758.123] (--) evdev: TPPS/2 IBM TrackPoint: Found relative axes
> [ 42758.123] (--) evdev: TPPS/2 IBM TrackPoint: Found x and y relative axes
> [ 42758.123] (II) evdev: TPPS/2 IBM TrackPoint: Configuring as mouse
> [ 42758.123] (**) evdev: TPPS/2 IBM TrackPoint: YAxisMapping: buttons 4 and
> 5
> [ 42758.123] (**) evdev: TPPS/2 IBM TrackPoint: EmulateWheelButton: 4,
> EmulateWheelInertia: 10, EmulateWheelTimeout: 200
> [ 42758.123] (**) Option "config_info"
> "udev:/sys/devices/platform/i8042/serio1/serio2/input/input7/event6"
> [ 42758.123] (II) XINPUT: Adding extended input device "TPPS/2 IBM
> TrackPoint" (type: MOUSE, id 10)
> [ 42758.123] (II) evdev: TPPS/2 IBM TrackPoint: initialized for relative
> axes.
> [ 42758.123] (**) TPPS/2 IBM TrackPoint: (accel) keeping acceleration scheme
> 1
> [ 42758.123] (**) TPPS/2 IBM TrackPoint: (accel) acceleration profile 0
> [ 42758.123] (**) TPPS/2 IBM TrackPoint: (accel) acceleration factor: 2.000
> [ 42758.123] (**) TPPS/2 IBM TrackPoint: (accel) acceleration threshold: 4
> [ 42758.123] (II) config/udev: Adding input device TPPS/2 IBM TrackPoint
> (/dev/input/mouse1)
> [ 42758.123] (II) No input driver specified, ignoring this device.
> [ 42758.123] (II) This device may have been added with another device file.
> ----- End
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