TP-LINK TL-WN751ND not detecting networks (most of the time)












1















I have the TP-LINK TL-WN751ND. I only bought it and fitted it in the last week. However, it has been causing a lot of issues. Before I bought this PCI card, I researched online to see if it was compatible with Ubuntu. I saw a lot of reports of it causing older versions (with older kernels) to freeze after a few minutes of operation, but I also saw a lot of those reports which also said this problem was fixed in a version of Ubuntu much older than 14.04 (around 12.04 if I recall). I also saw reports that this card works perfectly in 12.10. So I thought it would be fine, considering the amount of people reporting it works perfectly.



At first, I thought it had worked, it connected straight away with no problems, but after a while it began to disconnect itself after a few minutes of usage, and once it had disconnected itself you could not re-connect because the amount of networks available in the menu had drastically dropped from around 5 or 6, to just 2. Unfortunately, my router was not one of those 2. And from then on, the majority of the time it was only those 2 that would show up. And sometimes it was just 1. Sometimes, though, my router would show up, and it would connect just fine. However, after a few minutes of usage we end up back to square one.



I've looked around a lot, tried various solutions to do with the this card and similar and none of them seem to have worked. Before I go and buy a different card, I want to see if a bespoke question might get some answers. This is actually the second card I have tried now too.



Here are some generic points of interest related to the problem:




  • The operating system is Ubuntu 14.04 64 bit.

  • The card is a TP-LINK TL-WN751ND.

  • The chipset is a AR9227.

  • The card is near-on brand new, and is the second card I have tried with Ubuntu.


Also, on a side note, does anybody know of any PCI (not PCI-E, or USB) wifi cards that are known to work without a hitch on Ubuntu?



Regards










share|improve this question














bumped to the homepage by Community yesterday


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
















  • Please run the script that is in the accepted answer in the link below so we may see the information needed to help diagnose the issue. <askubuntu.com/questions/425155/…>

    – Wild Man
    Jun 29 '14 at 21:54











  • pastebin.ubuntu.com/7723547

    – thephpdev
    Jun 29 '14 at 22:03











  • Have you tried any driver parameters? What country are you in so we can see if your router is set to the right one.

    – Wild Man
    Jun 29 '14 at 22:08











  • Hmm, I'm not entirely sure. Networking is not my forte. Anyway, I am in the UK. The router at hand is a new Sky router (link: sky.com/products/kit/sky-hub).

    – thephpdev
    Jun 29 '14 at 22:12











  • Your router setting is for China, so I guess we need to change it to the UK.

    – Wild Man
    Jun 29 '14 at 22:15
















1















I have the TP-LINK TL-WN751ND. I only bought it and fitted it in the last week. However, it has been causing a lot of issues. Before I bought this PCI card, I researched online to see if it was compatible with Ubuntu. I saw a lot of reports of it causing older versions (with older kernels) to freeze after a few minutes of operation, but I also saw a lot of those reports which also said this problem was fixed in a version of Ubuntu much older than 14.04 (around 12.04 if I recall). I also saw reports that this card works perfectly in 12.10. So I thought it would be fine, considering the amount of people reporting it works perfectly.



At first, I thought it had worked, it connected straight away with no problems, but after a while it began to disconnect itself after a few minutes of usage, and once it had disconnected itself you could not re-connect because the amount of networks available in the menu had drastically dropped from around 5 or 6, to just 2. Unfortunately, my router was not one of those 2. And from then on, the majority of the time it was only those 2 that would show up. And sometimes it was just 1. Sometimes, though, my router would show up, and it would connect just fine. However, after a few minutes of usage we end up back to square one.



I've looked around a lot, tried various solutions to do with the this card and similar and none of them seem to have worked. Before I go and buy a different card, I want to see if a bespoke question might get some answers. This is actually the second card I have tried now too.



Here are some generic points of interest related to the problem:




  • The operating system is Ubuntu 14.04 64 bit.

  • The card is a TP-LINK TL-WN751ND.

  • The chipset is a AR9227.

  • The card is near-on brand new, and is the second card I have tried with Ubuntu.


Also, on a side note, does anybody know of any PCI (not PCI-E, or USB) wifi cards that are known to work without a hitch on Ubuntu?



Regards










share|improve this question














bumped to the homepage by Community yesterday


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
















  • Please run the script that is in the accepted answer in the link below so we may see the information needed to help diagnose the issue. <askubuntu.com/questions/425155/…>

    – Wild Man
    Jun 29 '14 at 21:54











  • pastebin.ubuntu.com/7723547

    – thephpdev
    Jun 29 '14 at 22:03











  • Have you tried any driver parameters? What country are you in so we can see if your router is set to the right one.

    – Wild Man
    Jun 29 '14 at 22:08











  • Hmm, I'm not entirely sure. Networking is not my forte. Anyway, I am in the UK. The router at hand is a new Sky router (link: sky.com/products/kit/sky-hub).

    – thephpdev
    Jun 29 '14 at 22:12











  • Your router setting is for China, so I guess we need to change it to the UK.

    – Wild Man
    Jun 29 '14 at 22:15














1












1








1


1






I have the TP-LINK TL-WN751ND. I only bought it and fitted it in the last week. However, it has been causing a lot of issues. Before I bought this PCI card, I researched online to see if it was compatible with Ubuntu. I saw a lot of reports of it causing older versions (with older kernels) to freeze after a few minutes of operation, but I also saw a lot of those reports which also said this problem was fixed in a version of Ubuntu much older than 14.04 (around 12.04 if I recall). I also saw reports that this card works perfectly in 12.10. So I thought it would be fine, considering the amount of people reporting it works perfectly.



At first, I thought it had worked, it connected straight away with no problems, but after a while it began to disconnect itself after a few minutes of usage, and once it had disconnected itself you could not re-connect because the amount of networks available in the menu had drastically dropped from around 5 or 6, to just 2. Unfortunately, my router was not one of those 2. And from then on, the majority of the time it was only those 2 that would show up. And sometimes it was just 1. Sometimes, though, my router would show up, and it would connect just fine. However, after a few minutes of usage we end up back to square one.



I've looked around a lot, tried various solutions to do with the this card and similar and none of them seem to have worked. Before I go and buy a different card, I want to see if a bespoke question might get some answers. This is actually the second card I have tried now too.



Here are some generic points of interest related to the problem:




  • The operating system is Ubuntu 14.04 64 bit.

  • The card is a TP-LINK TL-WN751ND.

  • The chipset is a AR9227.

  • The card is near-on brand new, and is the second card I have tried with Ubuntu.


Also, on a side note, does anybody know of any PCI (not PCI-E, or USB) wifi cards that are known to work without a hitch on Ubuntu?



Regards










share|improve this question














I have the TP-LINK TL-WN751ND. I only bought it and fitted it in the last week. However, it has been causing a lot of issues. Before I bought this PCI card, I researched online to see if it was compatible with Ubuntu. I saw a lot of reports of it causing older versions (with older kernels) to freeze after a few minutes of operation, but I also saw a lot of those reports which also said this problem was fixed in a version of Ubuntu much older than 14.04 (around 12.04 if I recall). I also saw reports that this card works perfectly in 12.10. So I thought it would be fine, considering the amount of people reporting it works perfectly.



At first, I thought it had worked, it connected straight away with no problems, but after a while it began to disconnect itself after a few minutes of usage, and once it had disconnected itself you could not re-connect because the amount of networks available in the menu had drastically dropped from around 5 or 6, to just 2. Unfortunately, my router was not one of those 2. And from then on, the majority of the time it was only those 2 that would show up. And sometimes it was just 1. Sometimes, though, my router would show up, and it would connect just fine. However, after a few minutes of usage we end up back to square one.



I've looked around a lot, tried various solutions to do with the this card and similar and none of them seem to have worked. Before I go and buy a different card, I want to see if a bespoke question might get some answers. This is actually the second card I have tried now too.



Here are some generic points of interest related to the problem:




  • The operating system is Ubuntu 14.04 64 bit.

  • The card is a TP-LINK TL-WN751ND.

  • The chipset is a AR9227.

  • The card is near-on brand new, and is the second card I have tried with Ubuntu.


Also, on a side note, does anybody know of any PCI (not PCI-E, or USB) wifi cards that are known to work without a hitch on Ubuntu?



Regards







wireless networking drivers 14.04 pci






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jun 29 '14 at 21:44









thephpdevthephpdev

15127




15127





bumped to the homepage by Community yesterday


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.







bumped to the homepage by Community yesterday


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.















  • Please run the script that is in the accepted answer in the link below so we may see the information needed to help diagnose the issue. <askubuntu.com/questions/425155/…>

    – Wild Man
    Jun 29 '14 at 21:54











  • pastebin.ubuntu.com/7723547

    – thephpdev
    Jun 29 '14 at 22:03











  • Have you tried any driver parameters? What country are you in so we can see if your router is set to the right one.

    – Wild Man
    Jun 29 '14 at 22:08











  • Hmm, I'm not entirely sure. Networking is not my forte. Anyway, I am in the UK. The router at hand is a new Sky router (link: sky.com/products/kit/sky-hub).

    – thephpdev
    Jun 29 '14 at 22:12











  • Your router setting is for China, so I guess we need to change it to the UK.

    – Wild Man
    Jun 29 '14 at 22:15



















  • Please run the script that is in the accepted answer in the link below so we may see the information needed to help diagnose the issue. <askubuntu.com/questions/425155/…>

    – Wild Man
    Jun 29 '14 at 21:54











  • pastebin.ubuntu.com/7723547

    – thephpdev
    Jun 29 '14 at 22:03











  • Have you tried any driver parameters? What country are you in so we can see if your router is set to the right one.

    – Wild Man
    Jun 29 '14 at 22:08











  • Hmm, I'm not entirely sure. Networking is not my forte. Anyway, I am in the UK. The router at hand is a new Sky router (link: sky.com/products/kit/sky-hub).

    – thephpdev
    Jun 29 '14 at 22:12











  • Your router setting is for China, so I guess we need to change it to the UK.

    – Wild Man
    Jun 29 '14 at 22:15

















Please run the script that is in the accepted answer in the link below so we may see the information needed to help diagnose the issue. <askubuntu.com/questions/425155/…>

– Wild Man
Jun 29 '14 at 21:54





Please run the script that is in the accepted answer in the link below so we may see the information needed to help diagnose the issue. <askubuntu.com/questions/425155/…>

– Wild Man
Jun 29 '14 at 21:54













pastebin.ubuntu.com/7723547

– thephpdev
Jun 29 '14 at 22:03





pastebin.ubuntu.com/7723547

– thephpdev
Jun 29 '14 at 22:03













Have you tried any driver parameters? What country are you in so we can see if your router is set to the right one.

– Wild Man
Jun 29 '14 at 22:08





Have you tried any driver parameters? What country are you in so we can see if your router is set to the right one.

– Wild Man
Jun 29 '14 at 22:08













Hmm, I'm not entirely sure. Networking is not my forte. Anyway, I am in the UK. The router at hand is a new Sky router (link: sky.com/products/kit/sky-hub).

– thephpdev
Jun 29 '14 at 22:12





Hmm, I'm not entirely sure. Networking is not my forte. Anyway, I am in the UK. The router at hand is a new Sky router (link: sky.com/products/kit/sky-hub).

– thephpdev
Jun 29 '14 at 22:12













Your router setting is for China, so I guess we need to change it to the UK.

– Wild Man
Jun 29 '14 at 22:15





Your router setting is for China, so I guess we need to change it to the UK.

– Wild Man
Jun 29 '14 at 22:15










1 Answer
1






active

oldest

votes


















0














We are changing the country code first, do:



sudo sed -i 's/^REG.*=$/&UK/' /etc/default/crda


Then do:



echo "options ath9k nohwcrypt=1" | sudo tee /etc/modprobe.d/ath9k.conf
sudo modprobe -rfv ath9k
sudo modprobe -v ath9k


In the router set your encryption to WPA2 not mixed mode.
Change the channel to 1 or 11 they usually work best.
Save the router configuration, then reboot router and computer and unplug wired connection.



Set your wireless settings in network manager to match the screenshots.DNS SettingsIPV6 Setting Then reboot.






share|improve this answer


























  • Hi, all commands executed without a hitch, however the problem persists. Can't see my router or any of the others I could see in the beginning.

    – thephpdev
    Jun 29 '14 at 23:34











  • Run the script again and post the new info file so we can see the changes. Run this command sudo gedit /etc/modprobe.d/ath9k.conf and post the contents of the file.

    – Wild Man
    Jun 29 '14 at 23:36











  • Ok: wireless-info.txt: pastebin.ubuntu.com/7725202 and ath9k.conf: pastebin.ubuntu.com/7725204

    – thephpdev
    Jun 30 '14 at 7:48











  • Also, I'd like to add, the amount of networks increased this morning, and I managed to connect. I had good signal, but is disconnected itself after 10 minutes.

    – thephpdev
    Jun 30 '14 at 7:50











  • Are you sure that you are not having any issues with your router? The country code did not save so we will do it manually. sudo gedit /etc/rc.local above the exit0 add this line iw reg set GB Proofread carefully, save and close gedit. Reboot. Is this the network you want to connect too SKYA290D? if so please change the channel to 1 or 11.

    – Wild Man
    Jun 30 '14 at 17:13











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1 Answer
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0














We are changing the country code first, do:



sudo sed -i 's/^REG.*=$/&UK/' /etc/default/crda


Then do:



echo "options ath9k nohwcrypt=1" | sudo tee /etc/modprobe.d/ath9k.conf
sudo modprobe -rfv ath9k
sudo modprobe -v ath9k


In the router set your encryption to WPA2 not mixed mode.
Change the channel to 1 or 11 they usually work best.
Save the router configuration, then reboot router and computer and unplug wired connection.



Set your wireless settings in network manager to match the screenshots.DNS SettingsIPV6 Setting Then reboot.






share|improve this answer


























  • Hi, all commands executed without a hitch, however the problem persists. Can't see my router or any of the others I could see in the beginning.

    – thephpdev
    Jun 29 '14 at 23:34











  • Run the script again and post the new info file so we can see the changes. Run this command sudo gedit /etc/modprobe.d/ath9k.conf and post the contents of the file.

    – Wild Man
    Jun 29 '14 at 23:36











  • Ok: wireless-info.txt: pastebin.ubuntu.com/7725202 and ath9k.conf: pastebin.ubuntu.com/7725204

    – thephpdev
    Jun 30 '14 at 7:48











  • Also, I'd like to add, the amount of networks increased this morning, and I managed to connect. I had good signal, but is disconnected itself after 10 minutes.

    – thephpdev
    Jun 30 '14 at 7:50











  • Are you sure that you are not having any issues with your router? The country code did not save so we will do it manually. sudo gedit /etc/rc.local above the exit0 add this line iw reg set GB Proofread carefully, save and close gedit. Reboot. Is this the network you want to connect too SKYA290D? if so please change the channel to 1 or 11.

    – Wild Man
    Jun 30 '14 at 17:13
















0














We are changing the country code first, do:



sudo sed -i 's/^REG.*=$/&UK/' /etc/default/crda


Then do:



echo "options ath9k nohwcrypt=1" | sudo tee /etc/modprobe.d/ath9k.conf
sudo modprobe -rfv ath9k
sudo modprobe -v ath9k


In the router set your encryption to WPA2 not mixed mode.
Change the channel to 1 or 11 they usually work best.
Save the router configuration, then reboot router and computer and unplug wired connection.



Set your wireless settings in network manager to match the screenshots.DNS SettingsIPV6 Setting Then reboot.






share|improve this answer


























  • Hi, all commands executed without a hitch, however the problem persists. Can't see my router or any of the others I could see in the beginning.

    – thephpdev
    Jun 29 '14 at 23:34











  • Run the script again and post the new info file so we can see the changes. Run this command sudo gedit /etc/modprobe.d/ath9k.conf and post the contents of the file.

    – Wild Man
    Jun 29 '14 at 23:36











  • Ok: wireless-info.txt: pastebin.ubuntu.com/7725202 and ath9k.conf: pastebin.ubuntu.com/7725204

    – thephpdev
    Jun 30 '14 at 7:48











  • Also, I'd like to add, the amount of networks increased this morning, and I managed to connect. I had good signal, but is disconnected itself after 10 minutes.

    – thephpdev
    Jun 30 '14 at 7:50











  • Are you sure that you are not having any issues with your router? The country code did not save so we will do it manually. sudo gedit /etc/rc.local above the exit0 add this line iw reg set GB Proofread carefully, save and close gedit. Reboot. Is this the network you want to connect too SKYA290D? if so please change the channel to 1 or 11.

    – Wild Man
    Jun 30 '14 at 17:13














0












0








0







We are changing the country code first, do:



sudo sed -i 's/^REG.*=$/&UK/' /etc/default/crda


Then do:



echo "options ath9k nohwcrypt=1" | sudo tee /etc/modprobe.d/ath9k.conf
sudo modprobe -rfv ath9k
sudo modprobe -v ath9k


In the router set your encryption to WPA2 not mixed mode.
Change the channel to 1 or 11 they usually work best.
Save the router configuration, then reboot router and computer and unplug wired connection.



Set your wireless settings in network manager to match the screenshots.DNS SettingsIPV6 Setting Then reboot.






share|improve this answer















We are changing the country code first, do:



sudo sed -i 's/^REG.*=$/&UK/' /etc/default/crda


Then do:



echo "options ath9k nohwcrypt=1" | sudo tee /etc/modprobe.d/ath9k.conf
sudo modprobe -rfv ath9k
sudo modprobe -v ath9k


In the router set your encryption to WPA2 not mixed mode.
Change the channel to 1 or 11 they usually work best.
Save the router configuration, then reboot router and computer and unplug wired connection.



Set your wireless settings in network manager to match the screenshots.DNS SettingsIPV6 Setting Then reboot.







share|improve this answer














share|improve this answer



share|improve this answer








edited Jun 30 '14 at 22:19

























answered Jun 29 '14 at 22:46









Wild ManWild Man

6,49732640




6,49732640













  • Hi, all commands executed without a hitch, however the problem persists. Can't see my router or any of the others I could see in the beginning.

    – thephpdev
    Jun 29 '14 at 23:34











  • Run the script again and post the new info file so we can see the changes. Run this command sudo gedit /etc/modprobe.d/ath9k.conf and post the contents of the file.

    – Wild Man
    Jun 29 '14 at 23:36











  • Ok: wireless-info.txt: pastebin.ubuntu.com/7725202 and ath9k.conf: pastebin.ubuntu.com/7725204

    – thephpdev
    Jun 30 '14 at 7:48











  • Also, I'd like to add, the amount of networks increased this morning, and I managed to connect. I had good signal, but is disconnected itself after 10 minutes.

    – thephpdev
    Jun 30 '14 at 7:50











  • Are you sure that you are not having any issues with your router? The country code did not save so we will do it manually. sudo gedit /etc/rc.local above the exit0 add this line iw reg set GB Proofread carefully, save and close gedit. Reboot. Is this the network you want to connect too SKYA290D? if so please change the channel to 1 or 11.

    – Wild Man
    Jun 30 '14 at 17:13



















  • Hi, all commands executed without a hitch, however the problem persists. Can't see my router or any of the others I could see in the beginning.

    – thephpdev
    Jun 29 '14 at 23:34











  • Run the script again and post the new info file so we can see the changes. Run this command sudo gedit /etc/modprobe.d/ath9k.conf and post the contents of the file.

    – Wild Man
    Jun 29 '14 at 23:36











  • Ok: wireless-info.txt: pastebin.ubuntu.com/7725202 and ath9k.conf: pastebin.ubuntu.com/7725204

    – thephpdev
    Jun 30 '14 at 7:48











  • Also, I'd like to add, the amount of networks increased this morning, and I managed to connect. I had good signal, but is disconnected itself after 10 minutes.

    – thephpdev
    Jun 30 '14 at 7:50











  • Are you sure that you are not having any issues with your router? The country code did not save so we will do it manually. sudo gedit /etc/rc.local above the exit0 add this line iw reg set GB Proofread carefully, save and close gedit. Reboot. Is this the network you want to connect too SKYA290D? if so please change the channel to 1 or 11.

    – Wild Man
    Jun 30 '14 at 17:13

















Hi, all commands executed without a hitch, however the problem persists. Can't see my router or any of the others I could see in the beginning.

– thephpdev
Jun 29 '14 at 23:34





Hi, all commands executed without a hitch, however the problem persists. Can't see my router or any of the others I could see in the beginning.

– thephpdev
Jun 29 '14 at 23:34













Run the script again and post the new info file so we can see the changes. Run this command sudo gedit /etc/modprobe.d/ath9k.conf and post the contents of the file.

– Wild Man
Jun 29 '14 at 23:36





Run the script again and post the new info file so we can see the changes. Run this command sudo gedit /etc/modprobe.d/ath9k.conf and post the contents of the file.

– Wild Man
Jun 29 '14 at 23:36













Ok: wireless-info.txt: pastebin.ubuntu.com/7725202 and ath9k.conf: pastebin.ubuntu.com/7725204

– thephpdev
Jun 30 '14 at 7:48





Ok: wireless-info.txt: pastebin.ubuntu.com/7725202 and ath9k.conf: pastebin.ubuntu.com/7725204

– thephpdev
Jun 30 '14 at 7:48













Also, I'd like to add, the amount of networks increased this morning, and I managed to connect. I had good signal, but is disconnected itself after 10 minutes.

– thephpdev
Jun 30 '14 at 7:50





Also, I'd like to add, the amount of networks increased this morning, and I managed to connect. I had good signal, but is disconnected itself after 10 minutes.

– thephpdev
Jun 30 '14 at 7:50













Are you sure that you are not having any issues with your router? The country code did not save so we will do it manually. sudo gedit /etc/rc.local above the exit0 add this line iw reg set GB Proofread carefully, save and close gedit. Reboot. Is this the network you want to connect too SKYA290D? if so please change the channel to 1 or 11.

– Wild Man
Jun 30 '14 at 17:13





Are you sure that you are not having any issues with your router? The country code did not save so we will do it manually. sudo gedit /etc/rc.local above the exit0 add this line iw reg set GB Proofread carefully, save and close gedit. Reboot. Is this the network you want to connect too SKYA290D? if so please change the channel to 1 or 11.

– Wild Man
Jun 30 '14 at 17:13


















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