Olá Joao, vê se isto ajuda-te.
Depois diz-me se resultou
http://contribdoc.caixamagica.pt/index.php/Configurar_sa%C3%ADdas_HDMI
É para o sistema operativo que uso, mas pode resultar.
Ainda não deu certo. olha minhas saidas para aqueles comandos:
# 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 0: Intel [HDA Intel], device 1: ALC662 rev1 Digital [ALC662 rev1 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: NVIDIA HDMI [NVIDIA HDMI]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: NVIDIA HDMI [NVIDIA HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: NVIDIA HDMI [NVIDIA HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: NVIDIA HDMI [NVIDIA HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
# aplay -L
pulse
Playback/recording through the PulseAudio sound server
front:CARD=Intel,DEV=0
HDA Intel, ALC662 rev1 Analog
Front speakers
surround40:CARD=Intel,DEV=0
HDA Intel, ALC662 rev1 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
HDA Intel, ALC662 rev1 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
HDA Intel, ALC662 rev1 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
HDA Intel, ALC662 rev1 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
HDA Intel, ALC662 rev1 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=Intel,DEV=0
HDA Intel, ALC662 rev1 Digital
IEC958 (S/PDIF) Digital Audio Output
hdmi:CARD=NVidia,DEV=0
HDA NVidia, NVIDIA HDMI
HDMI Audio Output
hdmi:CARD=NVidia,DEV=1
HDA NVidia, NVIDIA HDMI
HDMI Audio Output
hdmi:CARD=NVidia,DEV=2
HDA NVidia, NVIDIA HDMI
HDMI Audio Output
hdmi:CARD=NVidia,DEV=3
HDA NVidia, NVIDIA HDMI
HDMI Audio Output
#alsamixer -c 0
┌───────────────────────────── AlsaMixer v1.0.23 ──────────────────────────────┐
│ Card: HDA Intel F1: Help │
│ Chip: Realtek ALC662 rev1 F2: System information │
│ View: F3:[Playback] F4: Capture F5: All F6: Select sound card │
│ Item: Master [dB gain: 0.00] Esc: Exit │
│ │
│ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ │
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ >
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ >
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ >
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ >
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ >
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ >
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ >
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │
│ ├──┤ ┌──┐ └──┘ ├──┤ ├──┤ ├──┤ ├──┤ ├──┤ │
│ │o│ │o│ │o│ │MM│ │o│ │o│ │o│ │
│ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ │
│ 100 100<>100 100<>100 100<>100 100<>100 100 100 │
│ < Master >Headphon PCM Front Front Mi Surround Center LFE │
└──────────────────────────────────────────────────────────────────────────────┘
Esta tela é do som onbord
#alsamixer -c 0
┌───────────────────────────── AlsaMixer v1.0.23 ──────────────────────────────┐
│ Card: HDA NVidia F1: Help │
│ Chip: Nvidia GT220 HDMI F2: System information │
│ View: F3:[Playback] F4: Capture F5: All F6: Select sound card │
│ Item: S/PDIF Esc: Exit │
│ │
│ │
│ │
│ │
│ │
│ │
│ │
│ ┌──┐ ┌──┐ ┌──┐ ┌──┐ │
│ │o│ │MM│ │MM│ │MM│ │
│ └──┘ └──┘ └──┘ └──┘ │
│ < S/PDIF >S/PDIF 1 S/PDIF 2 S/PDIF 3 │
│ │
│ │
│ │
│ │
│ │
│ │
│ │
└──────────────────────────────────────────────────────────────────────────────┘
Esta tela é do som da placa de video geforce gt 220