Re: Issue w/ Headphone Jack Not Recognised.
if you have an intel chipset try this:
gksu gedit /etc/modprobe.d/alsa-base.conf
Add this line at the end: options snd-hda-intel model=eapd probe_mask=1 position_fix=1
I've had to do this in pretty much every distro since around when ubuntu 8.04 was released. May also be similar fixes for other chipsets.
Desktop: Windows 8 x64 | Intel Core i5-2500 | 16 GB DDR3 1333 | ATI 6950 2gb | 64gb Vertex 2/320gb/750gb/1tb hdd
Laptop: System76 Lemur Ultra | Xubuntu 13.04 x64 | 2.5Ghz Intel Core i5-3210m | 8GB DDR31600 | Intel HD4000 | 500GB 7200rpm hybrid hdd