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Thread: Dell Vostro 2520 touchpad issue

  1. #1
    Join Date
    Mar 2013
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    4

    Dell Vostro 2520 touchpad issue

    Greetings.

    I bought this laptop in January. Everyone once so often, randomly occurring, the touchpad suffers severe cursor control issues. When this happens the cursor does not go to where I gesture it with my finger. In this state the cursor can even move on its own slightly (nothing is touching the touchpad). Restarting seems to fix the issue. It's quite frustrating as it's already caused some lost work. I've contact Dell about this, but they apparently don't support ubuntu, and instead pass the buck off to canonical. I'm a bit of bit of a novice with Ubuntu. If this was a windows PC I'd replace/update the touchpad driver. This was suggested to me by a dell rep. I don't know how to update the touchpad driver in ubuntu. I have searched for instructions but I haven't found anything definitive that will help me with this issue. Right now the laptop is running 12.04. Would updating to 12.10 fix the issue? I was considering installing linux mint as I've heard good things about it, but considering it's debian/ubuntu based, I'm not sure if that would actually fix the issue or not.

    Doing some more searching about this, I've heard that it might be a "flea power" issue? I've never had this issue with other laptops before.

  2. #2
    Join Date
    Aug 2006
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    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Dell Vostro 2520 touchpad issue

    Can you post the output of xinput list. It should show how the touchpad is recognized, and might provide something to search for. I've seen reports of poor support for Alps and Elantech touchpads, perhaps you have one of these. Newer software usually provides better support for newer hardware, but I'd advise running 12.10 from CD/USB to test first.
    Last edited by mikewhatever; April 2nd, 2013 at 12:07 AM.

  3. #3
    Join Date
    Mar 2013
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    4

    Re: Dell Vostro 2520 touchpad issue

    Thanks for the reply Mike. I'm not exactly sure how to set a list all parameter for that command, even after looking at the man page. Here's the output for xinput --list (which is the same output for xinput with no switches):

    xxx@xxxxx:~$ xinput --list
    ⎡ Virtual core pointer id=2 [master pointer (3)]
    ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
    ⎜ ↳ DualPoint Stick id=12 [slave pointer (2)]
    ⎜ ↳ AlpsPS/2 ALPS DualPoint TouchPad id=13 [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)]
    ↳ Sleep Button id=9 [slave keyboard (3)]
    ↳ Laptop_Integrated_Webcam_HD id=10 [slave keyboard (3)]
    ↳ AT Translated Set 2 keyboard id=11 [slave keyboard (3)]
    ↳ Dell WMI hotkeys id=14 [slave keyboard (3)]
    Looks like it is an Alps touchpad, which likely explains why it occasionally acts wonky. Is there a way I can update the driver for the touchpad? I do plan on updating to 12.10 if I can't find a simpler fix for this issue.

  4. #4
    Join Date
    Aug 2006
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    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Dell Vostro 2520 touchpad issue

    I don't know how to update just the touchpad driver, and am not sure it would help in your particular case. Apparently, that machine has been certified for Ubuntu 12.04, and searching doesn't turn up similar problems with Vostro 2520.

  5. #5
    Join Date
    Mar 2013
    Beans
    4

    Re: Dell Vostro 2520 touchpad issue

    I spoke to a Canonical rep this morning, and he mentioned the same thing about certification. He did however mention that any minor updates afterwards may have broken something. I might post a critical update post on launchpad, as the Canonical rep mentioned. Ultimately I might just install 12.10 and see if that helps.

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