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Thread: Slow download speed using Centrino Wireless-N 1030 with Ubuntu 12.04

  1. #31
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    Re: Slow download speed using Centrino Wireless-N 1030 with Ubuntu 12.04

    It does seem wierd. Have you any way to compare wired ethernet on this or another machine? Please be sure to use wget and the same download link.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  2. #32
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    Re: Slow download speed using Centrino Wireless-N 1030 with Ubuntu 12.04

    Hi chili555, his ethernet is very slow he needs the 8168 and he is using the 8169.
    Thanks for helping out I am out of ideas.
    Last edited by Wild Man; April 19th, 2013 at 09:44 PM.

  3. #33
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    Re: Slow download speed using Centrino Wireless-N 1030 with Ubuntu 12.04

    If the ethernet is slow and the wireless is slow, I wonder if it's a driver problem. Could it be a router problem? A firewall problem?
    Code:
    sudo ufw status
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  4. #34
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    Re: Slow download speed using Centrino Wireless-N 1030 with Ubuntu 12.04

    Hi Chili,

    Here's the return:

    ubuntu@ubuntu-Dell-System-XPS-L502X:~$ sudo ufw status
    [sudo] password for ubuntu:
    Status: inactive
    ubuntu@ubuntu-Dell-System-XPS-L502X:~$


    What does that tell us?

    Also, don't know if it significant but after closing the terminal that download continued from the link you sent!

  5. #35
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    Re: Slow download speed using Centrino Wireless-N 1030 with Ubuntu 12.04

    I did notice though that when connected by ethernet the max download speed is also 56 KB/s, does this suggest it is an issue other than wi fi ?
    Also:
    Could it be a router problem?
    I'd go through the router settings with a fine-tooth comb. I'd set everything to defaults except WPA2-PSK and channel 11. Then I'd try again.

    Usually, iwlwifi, when 11N is disabled, is fast and reliable. I have a bit more experience with it because I am using it right now. The 5.4 Mb/s download I posted above is from iwlwifi.

    It is quite remarkable, in my opinion, that both wireless and ethernet are stuck at 56kb/s.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  6. #36
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    Re: Slow download speed using Centrino Wireless-N 1030 with Ubuntu 12.04

    Hi Chili,

    Reset router to factory default and ensured WPA2 option was selected together with Channel 11, still not able to download more than 56 Kib/s (according to System Monitor). Would it help if i sent you a screen grab of the Router settings.

    Cheers

  7. #37
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    Re: Slow download speed using Centrino Wireless-N 1030 with Ubuntu 12.04

    I am very, very low on ideas. In the router, are UPnP and QoS on or off? I suggest disabled for both.

    Have you tried a power reset for the router? Unplug it, count to twenty, plug it back in and see if anything is improved or even degraded.

    Let's have a look at:
    Code:
    dmesg | grep 80211
    I will be interested in any CRDA settings.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  8. #38
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    Re: Slow download speed using Centrino Wireless-N 1030 with Ubuntu 12.04

    I've no technical knowledge to add, but would like OP to try something...

    I don't trust the data being reported by Windows. It is possible that you are getting exactly the same speeds on Windows end, only it is falsely reporting a higher speed. Also possible that Windows is reporting bits per second while Ubuntu is reporting bytes. This would give an apparent difference of 10x on the numerals.

    The only sure way I know to compare properly is downloading a large file while timing it. Download identical file in Win and Ubuntu and time with stopwatch (or similar).

    It is possible that your max network speed is ~56KB/s and problem is not with Ubuntu at all, but is due to router or ISP.
    Newb: How far must I jump to clear the ledge halfway down?
    Guru: It's bad to jump off cliffs. Let's look at better options.
    Newb: Stop harping about "best practices" and just let me jump.


  9. #39
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    Re: Slow download speed using Centrino Wireless-N 1030 with Ubuntu 12.04

    Hi,

    Thanks for the suggestions.

    I've done the file download comparison test and it took approx the same amount of time to download the file with either operating system.

    Rgds

  10. #40
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    Re: Slow download speed using Centrino Wireless-N 1030 with Ubuntu 12.04

    Quote Originally Posted by SEKarlos View Post
    Hi,

    Thanks for the suggestions.

    I've done the file download comparison test and it took approx the same amount of time to download the file with either operating system.

    Rgds
    So it is evidently not an Ubuntu problem nor a wireless driver issue, correct?
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

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