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Thread: WiFi issue with Dell XPS 13

  1. #1
    Join Date
    Oct 2009
    Beans
    6

    WiFi issue with Dell XPS 13

    I've been living with terrible WiFi performance my Dell XPS 13 (Ivy Bridge) for the past few months.
    In November when I purchased the machine everything was ok, however in the middle of December the first visit to a new domain could take up to a few minutes to complete. So I reinstalled 12.10 (including the Project Sputnik PPA) thinking I had messed up some config somewhere.

    But the issue persisted.

    So last week I did a clean 12.04 install, as it is the only officially supported version of Ubuntu for Project Sputnik. I was delighted that WiFi performance returned to normal, until today.
    Once again it's slowed to a crawl.

    Elsewhere other users have blamed bad routers etc for their issues, however if I boot into a live Ubuntu USB the browsing performance is perfect, but once I boot from the hard drive, it slows to a crawl.

    I've tried modifing the power management as per Wild Man's instructions but that hasn't helped.

    Here's a video clip of how bad the connection is, the left pane is a ping to google.com, the right pane is a ping to the same ip address.
    http://youtu.be/Q3fyRgX31l4
    My issue only seems to occur when using a domain name, requests to ip addresses return instantly. I have noticed some errors in my syslog relating to a SIGTERM for dnsmasq, which may have something to do with this.

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

    Re: WiFi issue with Dell XPS 13

    You should copy/paste the ping results here, along with the syslog errors. Have you tried using a different DNS provider?

  3. #3
    Join Date
    Oct 2009
    Beans
    6

    Re: WiFi issue with Dell XPS 13

    Thanks for replying. Here's a link to a copy of my syslog after boot.
    http://paste.ubuntu.com/1583859/

  4. #4
    Join Date
    Oct 2009
    Beans
    6

    Re: WiFi issue with Dell XPS 13

    Looks like I caught a break!
    Editing /etc/resolv.conf to use Google's Public Nameservers solved the issue.

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