LinuxQuestions.org
Review your favorite Linux distribution.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Laptop and Netbook
User Name
Password
Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).

Notices

Reply
 
Search this Thread
Old 06-06-2007, 06:05 AM   #1
basileus
Member
 
Registered: Nov 2004
Location: Turku, Finland
Distribution: Debian, Ubuntu, Gentoo
Posts: 388

Rep: Reputation: 30
Cursor jumps with Synaptics touchpad


I have a new Macbook with Debian Etch installed on it, and it's working quite well. There is one BIG annoyance with it's touchpad left: whenever I accidentally touch it's edge AND I already have a finger on it, the cursor jumps unexpectedly to a totally different place. I've read the relevant README's and Synaptics entry in Gentoo Wiki. I had this exact same problem with an older laptop of mine.

This is what "synclient -l" reports:

Code:
 Parameter settings:
    LeftEdge             = 100
    RightEdge            = 1116
    TopEdge              = 50
    BottomEdge           = 337
    FingerLow            = 25
    FingerHigh           = 30
    MaxTapTime           = 180
    MaxTapMove           = 100
    MaxDoubleTapTime     = 200
    SingleTapTimeout     = 180
    ClickTime            = 100
    FastTaps             = 0
    EmulateMidButtonTime = 75
    VertScrollDelta      = 25
    HorizScrollDelta     = 0
    VertEdgeScroll       = 1
    HorizEdgeScroll      = 0
    VertTwoFingerScroll  = 0
    HorizTwoFingerScroll = 0
    MinSpeed             = 0.3
    MaxSpeed             = 1
    AccelFactor          = 0.35
    EdgeMotionMinZ       = 30
    EdgeMotionMaxZ       = 160
    EdgeMotionMinSpeed   = 1
    EdgeMotionMaxSpeed   = 400
    EdgeMotionUseAlways  = 0
    UpDownScrolling      = 0
    LeftRightScrolling   = 0
    UpDownRepeat         = 1
    LeftRightRepeat      = 1
    ScrollButtonRepeat   = 100
    TouchpadOff          = 0
    GuestMouseOff        = 0
    LockedDrags          = 0
    RTCornerButton       = 3
    RBCornerButton       = 0
    LTCornerButton       = 2
    LBCornerButton       = 0
    TapButton1           = 0
    TapButton2           = 0
    TapButton3           = 0
    CircularScrolling    = 0
    CircScrollDelta      = 0.01
    CircScrollTrigger    = 0
    CircularPad          = 0
    PalmDetect           = 1
    PalmMinWidth         = 10
    PalmMinZ             = 200
    CoastingSpeed        = 0
    PressureMotionMinZ   = 30
    PressureMotionMaxZ   = 160
    PressureMotionMinFactor = 1
    PressureMotionMaxFactor = 1
Note that modifying FingerLow and FingerHigh parameters does not help, I tried that. The left edge will still consider even the slightest touch as a touch. I suppose that's because there's already a finger on the pad, exerting some pressure on it.

I also tried changing the LeftEdge value (see "synclient -m 1") so that I could disable to left edge of the pad, but it did not seem to help at all. Only value that had any real effect was RightEdge.

For some reason the PalmDetect does not help either, even though it's supposed to fix this problem. Does this mean that I'm hosed with my overly large Apple touchpad ?
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
typing on keyboard jumps to mouse cursor position iomari Linux - General 5 07-26-2007 04:03 AM
Need to kill touchpad click. (Synaptics Touchpad / FC4) sarysa Linux - Laptop and Netbook 4 02-19-2007 04:15 PM
Erratic Synaptics Touchpad - jumps to I beam position... stardotstar Linux - General 1 11-04-2006 01:54 AM
cursor jumps to mouse location without my consent Myron Linux - Hardware 1 02-08-2004 10:34 AM
mouse cursor jumps under X. jontaylor Linux - General 1 04-17-2001 06:12 PM


All times are GMT -5. The time now is 08:32 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration