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 <alan01...@gmail.com> wrote: > Try using card 1. Look at amixer -c 1 > > On 7/29/20, Nicolas Martin <nico.mar...@gmail.com> 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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