I installed flawlessly el capitan 10.11.3 on a gigabyte h61n-usb3, clover 2.3k r3320.
Initially the audio was working without any troubles, but now if I go to the sound preferences, I got only "Headphone port" on my output devices. (I tested the frontal panel jack, but it doesn't work...
I'm trying to fix this little issue at boot: when I am at the clover screen, I got low resolution, but if I try to boot from my unibeast usb pen, I can get a full 1920x1080 resolution!
I'm on a 10.11.3 with clover v2.3k on a h61n-usb3 + i7 3770k (hd 4000)