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I have a TP-LINK TL-WN722N wi-fi adapter, and I suffer from bad connection quality on ubuntu. Dowload speeds may vary from 3 MB/s down to 40 kB/s, ping is unstable and online games are unplayable. On windows it works flawlessly. Any ideas, what may cause the problem?

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  • is your router configured for wireless N? What is your wifi device in laptop (sudo lshw -c network)
    – Web-E
    Apr 19, 2014 at 17:59
  • configuration: broadcast=yes driver=ath9k_htc driverversion=3.13.0-24-generic firmware=1.3 ip=192.168.0.104 link=yes multicast=yes wireless=IEEE 802.11bgn It runs on N mode, wifi hotspot is on bgn mode. Anyway same config on windows works perfectly, but on ubuntu not
    – Dmitry Avgustis
    Apr 19, 2014 at 18:04
  • Try this - atheros wireless ar9285 driver , Please change the driver name from ath9k to ath9k_htc in above steps. (If those steps doesn't work, use sudo rm /etc/modprobe.d/ath9k_htc.conf and reboot to revert the changes)
    – Web-E
    Apr 19, 2014 at 18:19
  • Tried this, didn't help unfortunately. I've also tried to download the latest .fw files from kernel web site for my adapter. They didn't help as well. I guess I'll have to give up on linux for a while unless I buy a new adapter
    – Dmitry Avgustis
    Apr 19, 2014 at 19:38
  • Try disabling n mode in router
    – Web-E
    Apr 20, 2014 at 4:30

1 Answer 1

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Found a workaround, I used Windows Wireless Drivers tool

sudo apt-get install ndisgtk

I used windows XP x64 driver, works fine.

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