SLow wifi since updating to 18.04











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Hi everyone



I've had some weird internet since upgrading.



first of all my wifi USB dongle stopped working so i thought it was broken, i replaced it and was getting speeds of under 1 mbps.



Since then I have had very poor download speeds, and surfing has been a bit hit and miss with some sites loading instantly, and others crawling. everything was fine using the same hardware on 16.04



what can i do to speed things up?



thanks










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  • Hi Syteanric, can you add some more information to your question? 1) The output of dmesg | grep Linux 2) The output of lshw -C network 3) The output of lsusb
    – Hee Jin
    Apr 29 at 16:31















up vote
9
down vote

favorite
6














Hi everyone



I've had some weird internet since upgrading.



first of all my wifi USB dongle stopped working so i thought it was broken, i replaced it and was getting speeds of under 1 mbps.



Since then I have had very poor download speeds, and surfing has been a bit hit and miss with some sites loading instantly, and others crawling. everything was fine using the same hardware on 16.04



what can i do to speed things up?



thanks










share|improve this question






















  • Hi Syteanric, can you add some more information to your question? 1) The output of dmesg | grep Linux 2) The output of lshw -C network 3) The output of lsusb
    – Hee Jin
    Apr 29 at 16:31













up vote
9
down vote

favorite
6









up vote
9
down vote

favorite
6






6







Hi everyone



I've had some weird internet since upgrading.



first of all my wifi USB dongle stopped working so i thought it was broken, i replaced it and was getting speeds of under 1 mbps.



Since then I have had very poor download speeds, and surfing has been a bit hit and miss with some sites loading instantly, and others crawling. everything was fine using the same hardware on 16.04



what can i do to speed things up?



thanks










share|improve this question















Hi everyone



I've had some weird internet since upgrading.



first of all my wifi USB dongle stopped working so i thought it was broken, i replaced it and was getting speeds of under 1 mbps.



Since then I have had very poor download speeds, and surfing has been a bit hit and miss with some sites loading instantly, and others crawling. everything was fine using the same hardware on 16.04



what can i do to speed things up?



thanks







networking wireless internet






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Apr 29 at 14:38









Syteanric

4612




4612












  • Hi Syteanric, can you add some more information to your question? 1) The output of dmesg | grep Linux 2) The output of lshw -C network 3) The output of lsusb
    – Hee Jin
    Apr 29 at 16:31


















  • Hi Syteanric, can you add some more information to your question? 1) The output of dmesg | grep Linux 2) The output of lshw -C network 3) The output of lsusb
    – Hee Jin
    Apr 29 at 16:31
















Hi Syteanric, can you add some more information to your question? 1) The output of dmesg | grep Linux 2) The output of lshw -C network 3) The output of lsusb
– Hee Jin
Apr 29 at 16:31




Hi Syteanric, can you add some more information to your question? 1) The output of dmesg | grep Linux 2) The output of lshw -C network 3) The output of lsusb
– Hee Jin
Apr 29 at 16:31










2 Answers
2






active

oldest

votes

















up vote
8
down vote













I just fixed this on ubuntu 18.04 - turns out there is some kind of issue with 802.11n and iwlwifi Intel chips. The solution is to turn it off.

Check if it works first with:



sudo modprobe -r iwlwifi

sudo modprobe iwlwifi 11n_disable=1


Make it permanent with this command:



echo "options iwlwifi 11n_disable=1" | sudo tee /etc/modprobe.d/iwlwifi.conf


I did this and my wifi speeds instantly went back to normal.






share|improve this answer





















  • Worked for me, thanks!
    – eskararriba
    Jun 22 at 8:12










  • This disables support for n-band wireless connections, correct? That should be noted in this answer if so. wiki.debian.org/iwlwifi
    – ckeeney
    Aug 21 at 17:04




















up vote
0
down vote














I just fixed this on ubuntu 18.04 - turns out there is some kind of issue with 802.11n and iwlwifi Intel chips.




That's for sure 8-) ! With a Advanced-N 6200 in a computer I just picked up, I was getting freezes (no LEDs so I don't know if the kernel paniced..) within a minute or two once I started rsync'ing some files over. 11n_disable=1 solved this for me.



Update: Actually I had freezes with 11n_disable=1 also; I popped my case open and found the card was not fully seated!






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    2 Answers
    2






    active

    oldest

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    2 Answers
    2






    active

    oldest

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    active

    oldest

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    active

    oldest

    votes








    up vote
    8
    down vote













    I just fixed this on ubuntu 18.04 - turns out there is some kind of issue with 802.11n and iwlwifi Intel chips. The solution is to turn it off.

    Check if it works first with:



    sudo modprobe -r iwlwifi

    sudo modprobe iwlwifi 11n_disable=1


    Make it permanent with this command:



    echo "options iwlwifi 11n_disable=1" | sudo tee /etc/modprobe.d/iwlwifi.conf


    I did this and my wifi speeds instantly went back to normal.






    share|improve this answer





















    • Worked for me, thanks!
      – eskararriba
      Jun 22 at 8:12










    • This disables support for n-band wireless connections, correct? That should be noted in this answer if so. wiki.debian.org/iwlwifi
      – ckeeney
      Aug 21 at 17:04

















    up vote
    8
    down vote













    I just fixed this on ubuntu 18.04 - turns out there is some kind of issue with 802.11n and iwlwifi Intel chips. The solution is to turn it off.

    Check if it works first with:



    sudo modprobe -r iwlwifi

    sudo modprobe iwlwifi 11n_disable=1


    Make it permanent with this command:



    echo "options iwlwifi 11n_disable=1" | sudo tee /etc/modprobe.d/iwlwifi.conf


    I did this and my wifi speeds instantly went back to normal.






    share|improve this answer





















    • Worked for me, thanks!
      – eskararriba
      Jun 22 at 8:12










    • This disables support for n-band wireless connections, correct? That should be noted in this answer if so. wiki.debian.org/iwlwifi
      – ckeeney
      Aug 21 at 17:04















    up vote
    8
    down vote










    up vote
    8
    down vote









    I just fixed this on ubuntu 18.04 - turns out there is some kind of issue with 802.11n and iwlwifi Intel chips. The solution is to turn it off.

    Check if it works first with:



    sudo modprobe -r iwlwifi

    sudo modprobe iwlwifi 11n_disable=1


    Make it permanent with this command:



    echo "options iwlwifi 11n_disable=1" | sudo tee /etc/modprobe.d/iwlwifi.conf


    I did this and my wifi speeds instantly went back to normal.






    share|improve this answer












    I just fixed this on ubuntu 18.04 - turns out there is some kind of issue with 802.11n and iwlwifi Intel chips. The solution is to turn it off.

    Check if it works first with:



    sudo modprobe -r iwlwifi

    sudo modprobe iwlwifi 11n_disable=1


    Make it permanent with this command:



    echo "options iwlwifi 11n_disable=1" | sudo tee /etc/modprobe.d/iwlwifi.conf


    I did this and my wifi speeds instantly went back to normal.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered May 18 at 2:45









    Ben Warren

    812




    812












    • Worked for me, thanks!
      – eskararriba
      Jun 22 at 8:12










    • This disables support for n-band wireless connections, correct? That should be noted in this answer if so. wiki.debian.org/iwlwifi
      – ckeeney
      Aug 21 at 17:04




















    • Worked for me, thanks!
      – eskararriba
      Jun 22 at 8:12










    • This disables support for n-band wireless connections, correct? That should be noted in this answer if so. wiki.debian.org/iwlwifi
      – ckeeney
      Aug 21 at 17:04


















    Worked for me, thanks!
    – eskararriba
    Jun 22 at 8:12




    Worked for me, thanks!
    – eskararriba
    Jun 22 at 8:12












    This disables support for n-band wireless connections, correct? That should be noted in this answer if so. wiki.debian.org/iwlwifi
    – ckeeney
    Aug 21 at 17:04






    This disables support for n-band wireless connections, correct? That should be noted in this answer if so. wiki.debian.org/iwlwifi
    – ckeeney
    Aug 21 at 17:04














    up vote
    0
    down vote














    I just fixed this on ubuntu 18.04 - turns out there is some kind of issue with 802.11n and iwlwifi Intel chips.




    That's for sure 8-) ! With a Advanced-N 6200 in a computer I just picked up, I was getting freezes (no LEDs so I don't know if the kernel paniced..) within a minute or two once I started rsync'ing some files over. 11n_disable=1 solved this for me.



    Update: Actually I had freezes with 11n_disable=1 also; I popped my case open and found the card was not fully seated!






    share|improve this answer



























      up vote
      0
      down vote














      I just fixed this on ubuntu 18.04 - turns out there is some kind of issue with 802.11n and iwlwifi Intel chips.




      That's for sure 8-) ! With a Advanced-N 6200 in a computer I just picked up, I was getting freezes (no LEDs so I don't know if the kernel paniced..) within a minute or two once I started rsync'ing some files over. 11n_disable=1 solved this for me.



      Update: Actually I had freezes with 11n_disable=1 also; I popped my case open and found the card was not fully seated!






      share|improve this answer

























        up vote
        0
        down vote










        up vote
        0
        down vote










        I just fixed this on ubuntu 18.04 - turns out there is some kind of issue with 802.11n and iwlwifi Intel chips.




        That's for sure 8-) ! With a Advanced-N 6200 in a computer I just picked up, I was getting freezes (no LEDs so I don't know if the kernel paniced..) within a minute or two once I started rsync'ing some files over. 11n_disable=1 solved this for me.



        Update: Actually I had freezes with 11n_disable=1 also; I popped my case open and found the card was not fully seated!






        share|improve this answer















        I just fixed this on ubuntu 18.04 - turns out there is some kind of issue with 802.11n and iwlwifi Intel chips.




        That's for sure 8-) ! With a Advanced-N 6200 in a computer I just picked up, I was getting freezes (no LEDs so I don't know if the kernel paniced..) within a minute or two once I started rsync'ing some files over. 11n_disable=1 solved this for me.



        Update: Actually I had freezes with 11n_disable=1 also; I popped my case open and found the card was not fully seated!







        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Oct 18 at 19:36

























        answered Oct 16 at 4:24









        user153822

        762




        762






























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