no network (eth0/wlan0) after reinstall of 15.10

[Ralf Mardorf]

On Tue, 12 Jan 2016 11:35:48 +0100, robert wrote:
>On 12.01.2016 10:39, Ralf Mardorf wrote:
>> On Tue, 12 Jan 2016 10:03:37 +0100, robert wrote:  
>>> there is only /sys/class/net/lo  
>> So   ip link   just shows the loopback device?
>>
>> Is the hardware shown by   lspci   or   lsusb   ?  
>yes.
>lspci shows among others:
>06:00.0 Network Controller: Broadcom ... Wireless Adapter (rev 03)

Then most likely the module needs to be loaded. Perhaps
special firmware is required.

Use the search of of

https://help.ubuntu.com/
https://askubuntu.com/
https://wiki.ubuntu.com/

or simply use

https://www.google.com/

or better

https://www.startpage.com/

Google, respl. Start Page usually provide good results, unfortunately
the search is much better than DuckDuckGo and others.

Most likely there are several easy to use howtos provided by the Ubuntu
help pages and by ask Ubuntu.