Spero possiate aiutarmi. Se puo' essere utile:
aplay -l
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**** List of PLAYBACK Hardware Devices ****
card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: HDMI [HDA Intel HDMI], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: PCH [HDA Intel PCH], device 0: ALC668 Analog [ALC668 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
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bash-4.2# alsactl restore
No state is present for card HDMI
Found hardware: "HDA-Intel" "Intel Haswell HDMI" "HDA:80862807,80860101,00100000" "0x8086" "0x2010"
Hardware is initialized using a generic method
No state is present for card HDMI
Found hardware: "HDA-Intel" "Realtek ALC668" "HDA:10ec0668,102805fd,00100003" "0x1028" "0x05fd"
Hardware is initialized using a generic method
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null
Discard all samples (playback) or generate zero samples (capture)
hdmi:CARD=HDMI,DEV=0
HDA Intel HDMI, HDMI 0
HDMI Audio Output
hdmi:CARD=HDMI,DEV=1
HDA Intel HDMI, HDMI 1
HDMI Audio Output
hdmi:CARD=HDMI,DEV=2
HDA Intel HDMI, HDMI 2
HDMI Audio Output
default:CARD=PCH
HDA Intel PCH, ALC668 Analog
Default Audio Device
sysdefault:CARD=PCH
HDA Intel PCH, ALC668 Analog
Default Audio Device
front:CARD=PCH,DEV=0
HDA Intel PCH, ALC668 Analog
Front speakers
surround40:CARD=PCH,DEV=0
HDA Intel PCH, ALC668 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
HDA Intel PCH, ALC668 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
HDA Intel PCH, ALC668 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
HDA Intel PCH, ALC668 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
HDA Intel PCH, ALC668 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers