wifi and hdmi problems on OS X yosemite (macbook pro 15-inch retina, late 2013) Just wondering if anyone has been having this issue and found a workaround:
My wifi works consistently both on Ubuntu and Android.
Sometimes it also works on OS X, other times it does not - not even after rebooting. No idea what's the problem. 

I also have problems with its HDMI output (random pixels being displayed on the external screen). Again, Ubuntu works fine with the same TVs.
At least the wifi issue should have been fixed (but it wasn't) with the latest update: