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I have recently installed Ubuntu 16.04 beside Windows 7.
I use TP-Link TL-WN821n.
Ubuntu normally installed,
seems that USB stick driver was installed automatically.
but the internet connection is very slow (in Windows is normal).
I run connection speed test in Ubuntu it shows:

  • 0.90 MB/s - Download
  • 1.00 MB/s - Upload

While my connection is 30MB/s Download, 3.0MB/s Upload (speed test in windows shows that).
i tried to search about how to fix the problem, run more than 7 solution and nothing got fixed.
Can anybody help me with that?
Regards,

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  • Please run the network diagnostics and edit your question to include a link to the result.
    – David Foerster
    Commented May 6, 2016 at 13:57
  • I am having the same slow connection issue with TL-WN821N. Disable power management, reinstall rtl8192eu driver and still not working. Lenovo ThinkPad wifi connects to the same AP gives twice the performance.
    – Cheng Ping Onn
    Commented Mar 4, 2018 at 9:55

2 Answers 2

Reset to default
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My TP-Link TL-WN821n often disconnected from the WiFi network and didn't reconnect until I forced it. The following link fixed that issue https://github.com/pvaret/rtl8192cu-fixes

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  • Welcome to Ask Ubuntu! You might be able to improve this answer with providing the steps needed in more detail and maybe even adding screen-shots of different parts to make it a rock solid answer.
    – Videonauth
    Commented Jun 13, 2016 at 18:55
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I had same problem and it was resolved reading and doing it like here, blacklisting the driver they said.

Internet speed really slow in linux but not in Windows

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  • Welcome to Ask Ubuntu! You might be able to improve this answer with providing the steps needed in more detail and maybe even adding screen-shots of different parts to make it a rock solid answer. Another possibility, perhaps more appropriate in this case is to flag the answer as a Duplicate of the answer you refer to. You need enough reputation to do so, however.
    – Marc Vanhoomissen
    Commented Oct 30, 2018 at 13:56

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