Here is a fix for CM 12.1 and other roms based on it i.e Candy 5, Blisspop, AICP, Resurrectiin Remix, Octo Os.... Just boot into recovery and flash the zip without any wipes and reboot and voila, hotspot fully working <b> Download</b> <b> Hotspot & Mic Fix for CM 12.x Roms</b>