I have dual-booted by Samsung Series 5 Chromebook into Ubuntu using Jay Lee's script/instructions, and then installed the ~500 updates that appear thereafter.

Now, I am trying to build my kernel headers in an attempt to enable virtualization so that I can run VirtualBox (I have a VM image on a flashdrive). I followed the instructions here: https://groups.google.com/forum/?fromgroups=#!topic/chromebook-central/PPQFpC7mYzk mainly doing as olofj suggests in his answer, while also making sure to abide by additions/edits made by panZ and algp.

However, now that I have done so, my wifi has stopped working, and when I click on the network icon in the top bar, in place of wifi networks there is a grayed-out message that says "no network devices available". I have an Atheros AR9300 Ethernet card (I think thats what you call it).

Any help is much needed and appreciated. Any further details necessary to answer the question will be provided as necessary.

Thanks!