@c4pp4 Yeah, that didn't yield any results either. Both of the commands failed.

@c4pp4 Yeah, I tried that as well. No results. Not sure whats going on here.

@c4pp4 I selected the dev channel that is selected by default for the Xperia X. Cant remember the exact name.

@c4pp4 Same thing:

phablet@ubuntu-phablet:~$ cat /proc/asound/cards
--- no soundcards ---

@c4pp4 Yes, multiple times. I mainly wanted to see if anybody else experienced this. I now really do think the sound chip is fried. How that happened, I have no clue.

@c4pp4 Nothing:

hablet@ubuntu-phablet:~$ aplay -l
aplay: device_list:268: no soundcards found...

@c4pp4 Looks like there aren't any cards:

phablet@ubuntu-phablet:~$ pacmd list-cards
0 card(s) available.

@c4pp4 That's weird. Here is the output:

phablet@ubuntu-phablet:~$ pacmd list-modules | grep "name:"
name: <module-stream-restore>
name: <module-augment-properties>
name: <module-switch-on-port-available>
name: <module-switch-on-connect>
name: <module-droid-discover>
name: <module-trust-store>
name: <module-null-sink>
name: <module-null-source>
name: <module-bluetooth-policy>
name: <module-bluez5-discover>
name: <module-native-protocol-unix>
name: <module-default-device-restore>
name: <module-rescue-streams>
name: <module-always-sink>
name: <module-suspend-on-idle>
name: <module-systemd-login>
name: <module-position-event-sounds>
name: <module-role-cork>
name: <module-role-ducking>
name: <module-dbus-protocol>
name: <module-filter-heuristics>
name: <module-filter-apply>
name: <module-cli-protocol-unix>

@c4pp4 Here's the output:
hablet@ubuntu-phablet:~$ pacmd list-sinks | grep -E "index:|name:"

• index: 0
  name: <sink.fake.sco>

@c4pp4 One thing I failed to mention. I also tried plugging in headphones, and there still wasn't any sound. Afterwards, I tried connecting to a bluetooth speaker, and it worked! I'm beginning to think there is an odd hardware problem here.