Laptop: Toshiba Satellite A135-S4487
Soundcard: Intel 82801G (ICH7 Family) HD Audio Controller
Audio device: ALSA
The exact problem is that plugging in the headphone doesn't cut out the sound for the speakers and that no sound is coming through the headphones when I plug them in anyway.
I followed this fix:
It's not the exact same model and an older ubuntu version, but the problem matched mine. Anyway, when I followed the instructions, it broke my sound completely, so I deleted the option, and it reverted back to the original problem.
How do I fix this?