Analog Output bcm2835 not working on Raspberry Pi 4

Raspberry Pi 2

Analog Output bcm2835 not working on Raspberry Pi 4

Postby Mat7413 » Sat May 15, 2021 1:00 pm

Hello,

I have followed the ARMv7 Installation guide to install Arch on a Raspberry Pi 4, and can´t get the
analog output to run. Although the kernel modules are installed,
Code: Select all
lsmod | grep snd_bcm2835
snd_bcm2835            24576  0
snd_pcm               106496  5 snd_compress,vc4,snd_pcm_dmaengine,snd_bcm2835,snd_soc_core
snd                    77824  5 snd_compress,snd_timer,snd_bcm2835,snd_soc_core,snd_pcm


the analog output is not showing up in
Code: Select all
cat /proc/asound/cards:
0 [vc4hdmi0       ]: vc4-hdmi - vc4-hdmi-0
                      vc4-hdmi-0
 1 [vc4hdmi1       ]: vc4-hdmi - vc4-hdmi-1
                      vc4-hdmi-1


In the /boot/config.txt, I have tried all combinations of the options
dtparam=audio=on
and
hdmi_ignore_edid_audio=1

with no effect on "cat /proc/asound/cards".


So,
what can I do to make the analog output available there, so that I can create an /etc/asound.conf file with an entry of the analog card?

-------------
System:
-------------
After Arch installation, I updated Arch and installed pulseaudio-server. Then I installed alsa-utils and then pulseaudio-alsa.
By now, the following alsa packages are installed:
alsa-lib 1.2.4-3
alsa-plugins 1:1.2.2-2
alsa-tools 1.2.2-1
alsa-topology-conf 1.2.4-2
alsa-ucm-conf 1.2.4-2
alsa-utils 1.2.4-2
pulseaudio-alsa 1:1.2.2-2
python-pyalsa 1.1.6-6
zita-alsa-pcmi 0.3.2-3

...and the following pulseaudio packages:
libcanberra-pulse 0.30+2+gc0620e4-3
libpulse 14.2-3
pulseaudio 14.2-3
pulseaudio-alsa 1:1.2.2-2
xfce4-pulseaudio-plugin 0.4.3-1
__________________________

My kernel is: 5.10.35-2-ARCH armv7l GNU/Linux

Can anyone please help?
Mat7413
 
Posts: 2
Joined: Sat May 15, 2021 12:02 pm

Re: Analog Output bcm2835 not working on Raspberry Pi 4

Postby unformatted » Tue May 18, 2021 11:09 am

Can you please post your config.txt?
unformatted
 
Posts: 32
Joined: Tue Mar 09, 2021 5:23 pm

Re: Analog Output bcm2835 not working on Raspberry Pi 4

Postby Mat7413 » Sun Jun 06, 2021 8:48 pm

Hi,

yes, sure! Sorry for the late reply...
Code: Select all
# See /boot/overlays/README for all available options
dtoverlay=vc4-kms-v3d
initramfs initramfs-linux.img followkernel


#device_tree_param=audio=on

dtparam=audio=on

#hdmi_ignore_edid_audio=1

I tried (uncommented) all possible combinations of the three options but none worked.
Mat7413
 
Posts: 2
Joined: Sat May 15, 2021 12:02 pm

Re: Analog Output bcm2835 not working on Raspberry Pi 4

Postby unformatted » Mon Jun 07, 2021 5:57 am

Try
Code: Select all
dtparam=audio=on
dtoverlay=vc4-kms-v3d
initramfs initramfs-linux.img followkernel

and reboot
unformatted
 
Posts: 32
Joined: Tue Mar 09, 2021 5:23 pm

Re: Analog Output bcm2835 not working on Raspberry Pi 4

Postby solskogen » Tue Jun 08, 2021 9:58 am

Code: Select all
dtparam=audio=on
dtoverlay=vc4-kms-v3d,noaudio


Should work. And yes, the order matter.
solskogen
 
Posts: 29
Joined: Mon Nov 18, 2013 10:41 am


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