Fixing the Wifi

Day 2 on Ubuntu. Wifi is gone. Apparently a well-known issue on Mac.

Error message when trying to fix:

Errors were encountered while processing:
 bcmwl-kernel-source
E: Sub-process /usr/bin/dpkg returned an error code (1)

Tried a lot of options. In the end this one worked. Whereas question refers to Ubuntu 16.04 the answer mentions Ubuntu 20.04 explicitly.

Installing Linux

Distribution: Ubuntu 20.04

Hardware: MacBook Pro 15-inch (mid 2010) that was lying around.

The MacBook Pro “Core i5” 2.4 15-Inch (Mid-2010) is powered by a 32 nm, dual-core 2.4 GHz Intel “Core i5” I5-520M (Arrandale) processor, with dedicated 256k level 2 cache for each core and an 3 MB a level 3 cache. This system also supports “Turbo Boost” — which “automatically boosts the processor speed based on workload” up to 2.93 GHz for this model — and “Hyper Threading” — which allows the system to recognize four “virtual cores” or “threads.”

Best guide I found, works like a charm: https://www.wikihow.com/Install-Ubuntu-Linux#Preparing-to-Install

Best thing: I can also boost RAM from 4G to 8G. More about that later.

Worst thing: the CPU is not modern enough for most machine learning tasks (as shown here).