I have installed Ubuntu 14.04 LTS (Trusty Tahr) for Rpi 2 and following the steps given at: https://wiki.ubuntu.com/ARM/RaspberryPi, I used the following commands in general to install: sudo apt-get update sudo apt-get upgrade -To get WIFI firmware sudo apt-get install linux-firmware sudo apt-get install lubuntu-desktop But when the desktop installed I am unable to see my connected wifi dongle on the Rpi 2, the connection just gives the option to use via LAN/Ethernet Network.
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Following the lengthy comment thread, I am going to summarize it as follows:
You tried with 16.04 and it worked. I don't even see how you could deduce from that, that it also should work on 14.04. The dongle working on 16.04 is also confirmed in an article I linked for you. That same article documents it's a pain to get working in 14.04. Obviously 14.04 has an older kernel and less support for different hardware, on top of that the firmware is missing in the repositories.
The answer is to use 16.04 or go through a painful installation process, that might not even work because of the architectural differences between ARM and x86/amd64.
I won't say it's impossible to fix, but you're in for a rough ride if you want to run this particular dongle on Ubuntu 14.04/ARM.
jawtheshark
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