No sound on Arch Linux (ALSA)

Question

Output of aplay -l

aplay: device_list:268: no soundcards found...

output of sudo aplay -l

**** *List of PLAYBACK Hardware Devices* ****
card 0: Intel [HDA Intel], device 0: ALC662 rev1 Analog [ALC662 rev1 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

My sound is unmuted in alsamixer and sudo alsamixer (diffrerent for some reason)

A Link to my /dev/snd/* output

http://ix.io/irz

Anything else needed?

Answer 1

1) Check if the user is part of the audio group:

id <user>

If not, add the user to the group with:

usermod -aG audio <user>

A logout/login will probably be necessary to re-activate

2) If you have a /dev/audio device, try copying any smallish (about 50kB) to that device:

cat file > /dev/audio

if you hear anything, then audio is working. If you do not have /dev/audio, you might have a bad configuration.