![Control Control](http://thehouseofmoth.com/wp-content/uploads/2017/05/TGProFanBehavior.jpg)
Sep 6, 2011 - This is a normal cause of fan noise on the MacBook Air – MacBook Air is busy, fans are keeping it cool. Fan noise is like sweating – it's a.
This might be due to different factors. The graphic driver you use, might impact the power consumption and thus the temperature.
If you are using a long term support (LTS) version of ubuntu, you are less likely to be running inappropriate drivers simultaneously. As a precaution, given your situation, please avoid running the macbook air with lid closed (e.g. When connected to an external monitor) until you resolve this. Have you tried installing the mac fan control daemon? Sudo apt-get install macfanctld This helps controlling many performance issues interrelated to the CPU, fan, Temp.