Re: Acer Aspire 3 A315-21 laptop has mono sound only?
On Thu, 19 Mar 2020 at 21:44, Ken Heard <ken@heard.name> wrote:
>
> I think that this particular laptop has mono sound. I have been using
> it temporarily to stream content by HDMI to a LG HD monitor and then by
> fibre optical cable to a NED D3020 V2 hybrid amplifier and finally to a
> pair of bass reflect speakers. Unfortunately sound comes out of only
> one speaker.
>
> After extensive tests I have determined to my satisfaction that the
> problem is in the laptop. I can test the two speakers built in the
> laptop separately, but I have no way of knowing whether the sound so
> produced is mono or stereo. I could find no specs for this laptop with
> details about the sound card.
Install the alsa-utils package on the laptop.
Get some headphones or ear buds and test them on another audio device.
Plug them into the laptop headphone output socket and run the command:
speaker-test -c2
This laptop is specified to produce stereo sound, so you should hear
in the headphones several seconds of pink noise which alternates
between the left and right ears.
For more info on your audio hardware, try running the command:
lspci | grep -i audio
or install the inxi package and run the command:
inxi -A
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