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Thread: Synaptics touchpad no longer working

  1. #1
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    Default Synaptics touchpad no longer working

    I am running opensuse 12.3 and the touchpad is no longer working. It works at start up until the tools icon appears. I believe it is problem between the synaptics driver and evdev. If I look in / Ivar/log/Xorg.0.log I see the touchpad detected for a 2'nd time.

    [ 69.936] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/event0)

    ....

    [ 69.941] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
    [ 69.941] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/mouse0)
    [ 69.941] (**) SynPS/2 Synaptics TouchPad: Ignoring device from InputClass "touchpad ignore duplicates"
    [ 69.941] (II) config/udev: Adding input device ST LIS3LV02DL Accelerometer (/dev/input/event7)

    I also noticed that if I run startx as root The to uchpad works fine.

  2. #2
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    Default Re: Synaptics touchpad no longer working

    You failed to say which desktop you are using.

    I am using KDE, and the touchpad stops working shortly after the desktop comes up. But that's because I am running "synaptiks" and have set it to disable the touchpad if it finds another mouse.

    It is a while since I last tried Gnome with a touchpad, though it was Gnome 3 (or 3.2).

    My best recollection, is that if I use the function key combo to disable the touchpad, it stops working. If I logout, it starts working again. If I login to Gnome, it stops working again. Or, in other words, something in Gnome is remembering the last state of the function key touchpad control.

    I'm not sure whether either of the above (KDE or Gnome) applies to you. If not, report your desktop and maybe someone will know what to do.
    openSUSE Leap 15.1; KDE Plasma 5;
    testing Leap 15.2Alpha

  3. #3
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    Default Re: Synaptics touchpad no longer working

    I am running kde. The touchpad is not set to disable if a mouse is plugged in. I have an HP2540P laptop.

  4. #4
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    Default Re: Synaptics touchpad no longer working

    Also /etc/X11/xorg.conf.d/10-evdev.conf contains

    Section "InputClass"
    Identifier "evdev touchpad catchall"
    MatchIsTouchpad "on"
    MatchDevicePath "/dev/input/event*"
    Driver "evdev"
    MatchDevicePath "/dev/input/event*"
    EndSection

    and /etc/X11/xorg.conf.d/50-synaptics.conf contains

    Section "InputClass"
    Identifier "touchpad catchall"
    Driver "synaptics"
    MatchIsTouchpad "on"
    # This option is recommend on all Linux systems using evdev, but cannot be
    # enabled by default. See the following link for details:
    # Who-T: How to ignore configuration errors
    MatchDevicePath "/dev/input/event*"
    Option "HorizScrollDelta" "0"
    # enable tap-to-click as default (bnc#722457)
    Option "TapButton1" "1"
    Option "TapButton3" "2"
    Option "TapButton2" "3"
    EndSection

    Section "InputClass"
    Identifier "touchpad ignore duplicates"
    MatchIsTouchpad "on"
    MatchOS "Linux"
    MatchDevicePath "/dev/input/mouse*"
    Option "Ignore" "on"
    EndSection

  5. #5
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    Default Re: Synaptics touchpad no longer working

    If you logout from KDE, does the touchpad work on the login screen?
    openSUSE Leap 15.1; KDE Plasma 5;
    testing Leap 15.2Alpha

  6. #6
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    Default Re: Synaptics touchpad no longer working

    Yes .. If I logout the touchpad works fine on the login screen.

    Also as I said above it also works if I login as root

  7. #7
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    Default Re: Synaptics touchpad no longer working

    So it is very likely something in your KDE settings somewhere, or perhaps something in gtk settings that is being followed by KDE.
    openSUSE Leap 15.1; KDE Plasma 5;
    testing Leap 15.2Alpha

  8. #8

    Default Re: Synaptics touchpad no longer working

    I had a similar problem. The touchpad stopped working after I used the hardware switch to enable/disable the touchpad. The KDE notifications went into infinite spiral crashing my session.

    As a result the touchpad was non-functional despite trying:
    Code:
    synclient TouchpadOff=0
    Also the touchpad was enabled during login but disabled after login.

    My solution was to rebuild synaptics package. I guess this refreshed some of the settings. Immediately after yast finished reinstalling the package the touchpad was enabled and working.

    Try the following:

    1. Start Yast Install/Remove Software tool.
    2. Type synaptics and the search result should show:
      1. Code:
        xf86-input-synaptics

    3. Click with the right button on the selected package. Select the fourth option from the drop-down menu. Apply.
    4. Wait for it to remove and install again the x86 synaptics.
    5. After Yast has disappeared, the touchpad should work.


    I have tested this on Compaq CQ61. I hope this solution will help you.

  9. #9
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    Default Re: Synaptics touchpad no longer working

    I did not have the KDE spiral that you described but reinstalling synaptics did the trick. It now works fine. Much thanks

  10. #10
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    Default Re: Synaptics touchpad no longer working

    Sorry it works only once after the reinstall. If I log out and back in it stops as before. Something during login processing is broken. It worked fine until 12.3 + some updates.

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