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Calixte
Asked: 2014-10-27 02:49:49 +0800 CST

My trackpad stopped working (not detected) after update, how do I fix this?

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I updated my laptop (Dell 'XPS 13 Developer Edition', aka 'Sputnik', the one that comes preinstalled with Ubuntu) to 14.10. Upon reboot my trackpad didn't work. Keyboard, touchscreen and everything else works flawlessly. Plugging in a mouse works too. I tried xinput list and this is the result:

user@computer:~$ xinput list
⎡ Virtual core pointer                      id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ SYNAPTICS Synaptics Large Touch Screen    id=9    [slave  pointer  (2)]
⎜   ↳ Logitech Unifying Device. Wireless PID:200a   id=13   [slave  pointer  (2)]
⎜   ↳ Logitech Unifying Device. Wireless PID:4027   id=14   [slave  pointer  (2)]
⎣ Virtual core keyboard                     id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ Power Button                              id=6    [slave  keyboard (3)]
    ↳ Video Bus                                 id=7    [slave  keyboard (3)]
    ↳ Power Button                              id=8    [slave  keyboard (3)]
    ↳ Integrated_Webcam_HD                      id=10   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=11   [slave  keyboard (3)]
    ↳ Dell WMI hotkeys                          id=12   [slave  keyboard (3)]

From what I gather, the touchpad is not detected. Dell says that all their fixes and drivers were all upstreamed from the kernel and I can't find them, nor can I find any way of forcing Ubuntu to recognise the touchpad on the web. What's the next step from here?

upgrade

1 Answers

  1. Best Answer

    I had the exact same problem !

    To fix it you need to have a lookup for a line for i2c_hid in /etc/modprobe.d/ folder and to comment it.

    Lookup with this command for example : grep -r i2c_hid /etc/modprobe.d/

    And you may find this :

    /etc/modprobe.d/blacklist.conf:blacklist i2c_hid

    Then you just need to comment this line and reboot. And your trackpad will be back :-)

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