site:linuxquestions.org Linuxquestions ubuntu network settings command line
and a non-LQ, http://www.ubuntugeek.com/ubuntu-networking-configuration-using-command-line.html
site:linuxquestions.org ubuntu sound settings command line
and a non-LQ, https://help.ubuntu.com/community/Sound
One thing not seen here,
If you have a recent Video Card with hdmi connectors,
the system may be trying to use that module,
and that module is blocking any other modules that may work.
I have a usb sound card and I add this line to
/etc/modprobe.d/blacklist-mga.conf < this file probably has a different name on your system, try "locate blacklist"
blacklist snd_hda_codec_hdmi #hda-nvidia-digital-stereo
Just that blocklist is all I need to do, your mileage may vary.
All the best, Glenn