Card 1 is a Nvidia graphic card; it does not allow to play sound on the
internal speaker.
I found the solution. The Lenovo P520 is a dual codec workstation; ALC662
(hw:0,0) drives the rear audio plugs; ALC233 (hw:0,4) drives the front
audio plugs and the internal speaker.
So hw:0,4 should be used for playback.
Hope it will help other people.
NM
On Thu, Jul 30, 2020 at 1:16 AM Alan Corey wrote:
> Try using card 1. Look at amixer -c 1
>
> On 7/29/20, Nicolas Martin wrote:
> > Hi,
> >
> > I have a Lenovo P520 workstation with an internal speaker on which I'd
> like
> > to play sound.
> > OS installed is RHEL 7U6 with alsa 1.1.6
> >
> > the internal speaker is enabled in BIOS; however I don't have any sound
> > output on it.
> >
> > The only way to have sound is to plug an external speaker.
> >
> > If I load the module snd-pcsp, there is an additional card that appears
> > that I can use to play sound on the internal speaker, although the sound
> > quality is very poor (crackling).
> >
> > I don't really know where to dig concerning this issue; whether it's a
> bug
> > with the kernel module or alsa; I'd appreciate some guidance.
> >
> > The audio chipset (not using the Nvidia output):
> > # lspci -v | grep -i audio
> > 00:1f.3 Audio device: Intel Corporation 200 Series PCH HD Audio
> > 65:00.1 Audio device: NVIDIA Corporation GP107GL High Definition Audio
> > Controller (rev a1)
> >
> > Below the output of aplay -l and aplay -L:
> > # aplay -l
> > List of PLAYBACK Hardware Devices
> > card 0: PCH [HDA Intel PCH], device 0: ALC662 rev3 Analog [ALC662 rev3
> > Analog]
> > Subdevices: 1/1
> > Subdevice #0: subdevice #0
> > card 0: PCH [HDA Intel PCH], device 4: ALC233 Analog [ALC233 Analog]
> > Subdevices: 1/1
> > Subdevice #0: subdevice #0
> > card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
> > Subdevices: 1/1
> > Subdevice #0: subdevice #0
> > card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
> > Subdevices: 1/1
> > Subdevice #0: subdevice #0
> > card 1: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2]
> > Subdevices: 1/1
> > Subdevice #0: subdevice #0
> > card 1: NVidia [HDA NVidia], device 9: HDMI 3 [HDMI 3]
> > Subdevices: 1/1
> > Subdevice #0: subdevice #0
> >
> > # aplay -L
> > null
> > Discard all samples (playback) or generate zero samples (capture)
> > pulse
> > PulseAudio Sound Server
> > default:CARD=PCH
> > HDA Intel PCH, ALC662 rev3 Analog
> > Default Audio Device
> > sysdefault:CARD=PCH
> > HDA Intel PCH, ALC662 rev3 Analog
> > Default Audio Device
> > front:CARD=PCH,DEV=0
> > HDA Intel PCH, ALC662 rev3 Analog
> > Front speakers
> > surround21:CARD=PCH,DEV=0
> > HDA Intel PCH, ALC662 rev3 Analog
> > 2.1 Surround output to Front and Subwoofer speakers
> > surround40:CARD=PCH,DEV=0
> > HDA Intel PCH, ALC662 rev3 Analog
> > 4.0 Surround output to Front and Rear speakers
> > surround41:CARD=PCH,DEV=0
> > HDA Intel PCH, ALC662 rev3 Analog
> > 4.1 Surround output to Front, Rear and Subwoofer speakers
> > surround50:CARD=PCH,DEV=0
> > HDA Intel PCH, ALC662 rev3 Analog
> > 5.0 Surround output to Front, Center and Rear speakers
> > surround51:CARD=PCH,DEV=0
> > HDA Intel PCH, ALC662 rev3 Analog
> > 5.1 Surround output to Front, Center, Rear and Subwoofer speakers
> > surround71:CARD=PCH,DEV=0
> > HDA Intel PCH, ALC662 rev3 Analog
> > 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
> > hdmi:CARD=NVidia,DEV=0
> > HDA NVidia, HDMI 0
> > HDMI Audio Output
> > hdmi:CARD=NVidia,DEV=1
> > HDA NVidia, HDMI 1
> > HDMI Audio Output
> > hdmi:CARD=NVidia,DEV=2
> > HDA NVidia, HDMI 2
> > HDMI Audio Output
> > hdmi:CARD=NVidia,DEV=3
> > HDA NVidia, HDMI 3
> > HDMI Audio Output
> >
>
>
> --
> -
> No, I won't call it "climate change", do you have a "reality problem"? -
> AB1JX
> Cities are cages built to contain excess people and keep them from
> cluttering up nature.
> Impeach Impeach Impeach Impeach Impeach Impeach Impeach Impeach
>
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