Archlinux sound does not play.

asound.conf

# Default asound.conf on my machine

$ cat /etc/asound.conf
# Use PulseAudio by default
pcm.!default {
  type pulse
  fallback "sysdefault"
  hint {
    show on
    description "Default ALSA Output (currently PulseAudio Sound Server)"
  }
}

ctl.!default {
  type pulse
  fallback "sysdefault"
}

# vim:set ft=alsaconf:


# The configuration that I tried

pcm.!default {
  type hw
  card PCH
}

ctl.!default {
  type hw
  card PCH
}

sound.txt

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: CX20590 Analog [CX20590 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

$ aplay -l | awk -F \: '/,/{print $2}' | awk '{print $1}' | uniq
PCH

$ lsmod | grep '^snd' | column -t
snd_hda_codec_hdmi      49263   1
snd_hda_codec_conexant  21937   1
snd_hda_codec_generic   63161   1   snd_hda_codec_conexant
snd_hda_intel           26387   3
snd_hda_controller      26857   1   snd_hda_intel
snd_hda_codec           112621  5   snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_codec_generic,snd_hda_intel,snd_hda_controller
snd_hwdep               17244   1   snd_hda_codec
snd_pcm                 88779   5   snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller
snd_timer               26614   2   snd_pcm
snd                     73436   13  snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_pcm,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,thinkpad_acpi

$ ls -l /dev/snd/
total 0
drwxr-xr-x  2 root root       60 May  3 22:44 by-path
crw-rw----+ 1 root audio 116,  2 May  3 22:44 controlC0
crw-rw----+ 1 root audio 116,  8 May  3 22:44 hwC0D0
crw-rw----+ 1 root audio 116,  9 May  3 22:44 hwC0D3
crw-rw----+ 1 root audio 116,  4 May  3 22:44 pcmC0D0c
crw-rw----+ 1 root audio 116,  3 May  3 23:00 pcmC0D0p
crw-rw----+ 1 root audio 116,  5 May  3 22:44 pcmC0D3p
crw-rw----+ 1 root audio 116,  6 May  3 22:44 pcmC0D7p
crw-rw----+ 1 root audio 116,  7 May  3 22:44 pcmC0D8p
crw-rw----+ 1 root audio 116,  1 May  3 22:43 seq
crw-rw----+ 1 root audio 116, 33 May  3 22:44 timer