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I have a laptop - Jumper EZBOOK 3 PRO.
It has the wireless adapter - Intel® Dual Band Wireless-AC 3165.
I've installed Ubuntu 18.04.1 LTS and have a problem with super slow WiFi connection.
And there is no problem using Windows 10.

I found the fix - to disable 802.11n.
But this is not a good option, because I still will not have the maximum speed. I want to have 802.11n working fine.

So the question is - Is there another solution?
For example, updating kernel or somehow installing proper driver or to use NDISwrapper.
Can you suggest me what to do?

P.S. I've tried to fix driver, but it wasn't successful. Also I've checked 802.11ac and it works fine.
P.S.S. I've booted Manjaro and have the same problem.

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    NDISwrapper is NOT the solution. – user880592 Oct 28 '18 at 17:53
  • Did you try switching the antenna selected? Search this site for antenna selection or google ubuntu antenna selection – ubfan1 Oct 28 '18 at 18:52
  • @ubfan1 I'm not familiar with antenna selection, but seems I can't do it. askubuntu.com/a/1060790/887142 – qwermike Oct 28 '18 at 20:09
  • If you have only one antenna wire, try moving it to the other post. – ubfan1 Oct 28 '18 at 20:16
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I had tried to fix the driver again. But I didn't succeeded - WiFi speed remained the same.

So I upgraded the kernel from 4.15 to 4.19 using ukuu.
It was easy and quick - and now WiFi works as expected.

By the way, the firmware is the same as on previous kernel - iwlwifi-7265D-29.ucode.
I'm not the Pro Linux guy. So if sb wants to explain smth, I will gladly listen.

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