No audio device present but hdmi video snd_bcm2835

Help and Support Raspberry Pi
1

Hi

running RPI3 and osmc version:

osmc@osmcNEU:~$ grep Kodi .kodi/temp/kodi.log | head -3
2021-11-16 17:52:33.866 T:404      INFO <general>: Starting Kodi (19.1). Platform: Linux ARM (Thumb) 32-bit
2021-11-16 17:52:33.866 T:404      INFO <general>: Using Release Kodi x32
2021-11-16 17:52:33.866 T:404      INFO <general>: Kodi compiled 2021-09-14 by GCC 8.3.0 for Linux ARM (Thumb) 32-bit version 5.10.22 (330262)

Strangwise hdmi audio is not working.

In config.txt I added some hdmi settings - should be like hdmi save - without success.

hdmi_drive=2
hdmi_force_hotplug=1
hdmi_ignore_edid=0xa5000080
config_hdmi_boost=4
hdmi_group=2
hdmi_mode=4
disable_overscan=0
overscan_left=24
overscan_right=24
overscan_top=24
overscan_bottom=24

in dmesg it looks like hdmi is enabled


osmc@osmcNEU:~$ journalctl | grep snd_bcm2835
Feb 14 11:11:58 osmcNEU kernel: Kernel command line: coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1  vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  root=/dev/mmcblk0p2 rootfstype=ext4 rootwait quiet osmcdev=rbp2


2021-11-16 15:06:58.091 T:1913     INFO <general>: CAESinkALSA - Unable to open device "default" for playback
2021-11-16 15:06:58.104 T:1913     INFO <general>: No Devices found - retry: 4

anyone experienced similar topics?

Thanks a lot

2

Yes. @nimbleguardian did. but he got no video and neither did I. Did you get a picture?

I found just reverting the kernel fixes it.

sudo apt-get install rbp2-image-5.10.32-2-osmc --reinstall

3

Hi

ok thanks, will check that.

It used to work before I did some updates…
but was not using it for awhile

4

It seems you are on the staging repo (buster-devel) which is still in testing.

5

ok, let me check the repo,
still not working after

sudo apt-get install rbp2-image-5.10.32-2-osmc --reinstall

6

Hi
right

deb http://apt.osmc.tv buster main

deb http://apt.osmc.tv buster-devel main

so will delete the buster-devel.

Will check

7

still note working

how to downgrade to 18.8?

which sources to be used?

8

You did reboot, yes?

9

You cannot downgrade from Kodi v19 to Kodi v18.x.
If you took a backup, you could reinstall an older version and update.

10

ok thanks,

will check

is this only entry correct for osmc in sources?
deb http://apt.osmc.tv buster main

running 19.1.0-17

still no audio device present

is there a way to get hdmi audio in kodi 19.x?
or should I use kodi 18 fresh install?

did several reboots

11

Please post some logs so we can check package versions.

12

uploaded

thanks for checking

https://paste.osmc.tv/iqotecafeb

13

What’s the output of

aplay -l
aplay -L

You may have to

sudo apt-get update && sudo apt-get install alsa-utils

to get aplay.

14

Had to install alsa

resultaplay: device_list:272: no soundcards found... osmc@osmcNEU:~$ aplay -L null Discard all samples (playback) or generate zero samples (capture)
Video is working, stange

15

So sound is totally borked. I can only suggest backup and reinstall.

16

ok thanks, will do that.

17

No need to reinstall, your problem comes from here

#dtoverlay=vc4-kms-v3d,cma-512
#https://discourse.osmc.tv/t/howto-install-a-vnc-server-on-the-raspberry-pi-currently-not-working-on-the-pi-4/1517/472
dtoverlay=vc4-fkms-v3d,cma-512

The fkms seems not to provide any audio device.

18

You could try to add dtoverlay=audio=on

19

You could try to add `dtoverlay=audio=on

thanks, did not try that ,
but this did the trick.

dtparam=audio=on

Thanks a lot for your help…!!!

perfect

20

did use fkms because of:

https://discourse.osmc.tv/t/howto-install-a-vnc-server-on-the-raspberry-pi/1517/472