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
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
>
