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Thread: One system hogging bandwidth

  1. #1
    Join Date
    Jan 2010
    Beans
    67
    Distro
    Ubuntu 13.04 Raring Ringtail

    Question One system hogging bandwidth

    I have two laptops, both running 12.10. The router is a Netgear N300. One of the systems, my lenovo z565, works fine. The other, a lenovo N585, works fine until we're both using the network for about 30 minutes, then the downstream speeds will drastically slow down for that system. If I disconnect the 565 from the router, the speeds on the 585 will go back to normal. I've looked through all the apps, there's nothing on this system that I can see that is hogging bandwidth, there's no QoS protocol in place on the router. I'm stumped.

    Any ideas or places to look for what is causing this?

    ETA: The problem is on the 565. When I booted it into windows, and did speed tests from speakeasy.net on both systems at the same time, they both showed 1.6 Mbps downstream on a 3Mbps cable hookup. When I ran the 565 in ubuntu and did the same thing, the 565 showed 2.5 Mbps and the 585 0.6 Mbps.
    Last edited by dnr1128; February 2nd, 2013 at 05:48 AM.

  2. #2
    Join Date
    Jan 2010
    Beans
    67
    Distro
    Ubuntu 13.04 Raring Ringtail

    Re: One system hogging bandwidth

    Might have found the problem:

    Software updater-->additional drivers. The "broadcome STA driver" was selected. I selected "do not use this device" and rebooted. After reboot, the wireless is still working fine, checked to make sure it's still unselected, it is.

    Did a speed test on both systems at the time from speakeasy.net, both systems showed even speeds.

    Maybe I'm the only one who's had this problem.
    Last edited by dnr1128; February 2nd, 2013 at 05:55 AM.

  3. #3
    Join Date
    Dec 2011
    Beans
    17

    Re: One system hogging bandwidth

    You're not alone - I've had this same exact problem the past few months. I was traveling for a while and half the time when I logged on to a wifi network with Ubuntu, everyone else's (Windows and Mac) connections would slow to a crawl, for as long as I was connected with Ubuntu. If I disconnected, or rebooted my machine into Windows and connected to the same network, the effect would disappear. This even happened while using a brand-spanking-new Clear(wire) Spot Voyager router/modem I bought at the beginning of April.

    My machine is a HP dv6 6140us with a Broadcom BCM4313.

    I've been using the propriety Broadcom STA driver for a long time. I'll try disabling it whenever I next have some other devices to play with.

  4. #4
    Join Date
    Sep 2008
    Location
    Minneapolis
    Beans
    65
    Distro
    Ubuntu 13.04 Raring Ringtail

    Re: One system hogging bandwidth

    Yes, you are not alone. I also am experiencing this. Excited to try disabling the broadcom driver (I remember explicitly enabling it). I'll post back if it doesn't work or I find something new.

    I also encountered this a couple years ago with my older laptop. Every other machine in the house would slow once my laptop was running and connected to the internet. Never found a solution back then, but wasn't really bothered (since all the other slow devices in the house were not mine).

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