No HDMI audio after update to OSMC 5.10.78

Help and Support Raspberry Pi
1

Hello

I lost HDMI audio after update to OSMC 5.10.18.
Video is OK, may need to tune buffering
I tried most of the suggested configuration items.

Linux osmc-kodi 5.10.78-5-osmc #1 SMP PREEMPT Mon Feb 28 00:17:33 UTC 2022 armv7l GNU/Linux

Raspberry Pi 3 Model B Plus Rev 1.3

/boot/config.txt

# Warning: do not edit this file, or it could prevent your OSMC system from starting.
# If you wish to make changes, you should do so via My OSMC or edit the config-user.txt file in this directory

# Any changes that you make here will be overwritten as this file is managed by the OSMC via the update system

[pi4]
dtoverlay=rpivid-v4l2
arm_64bit=1
kernel=kernel.img

[board-type=0x0e]
dtoverlay=vc4-fkms-v3d,cma-256

[all]
dtoverlay=vc4-fkms-v3d,cma-512
disable_overscan=1
start_x=1
disable_splash=1
disable_fw_kms_setup=1
hdmi_ignore_cec_init=1
include config-user.txt
dtparam=audio=on
dtoverlay=audio=on

[pi02]
dtoverlay=vc4-fkms-v3d,cma-256

I also have a debug log (if you need it)

Thanks

2

Hi,

This would be helpful.

Regards Tom.

3
  1. You should write your customization to config-user.txt
  2. dtparam=audio=on and dtoverlay=audio=on are only needed for Analog audio remove them if you use HDMI audio
  3. dtoverlay=audio=on doesn’t exists it would be dtoverlay=pisound but as mentioned this is not needed in your case
  4. dtoverlay=vc4-fkms-v3d,cma-512 is not suggested, so if removing the audio settings above and reboot doesn’t solve your issue first try with dtoverlay=vc4-kms-v3d,cma-512 before troubleshooting further.
4

Support Suggestion 1, remove audio configuration

  • Note: not needed for HDMI audio
  • Note: I connect the HDMI after power is applied
  • Note: my display detected: 1024 * 768 60Hz DVI (video OK)
  • Note: no HDMI audio
  • 2022060702-config.txt
  • 2022060702-config-user.txt
  • 2022060702.log
    Support Suggestion 2, change back to original config’s
  • Note: from: fkms to: kms
  • Note: no HDMI or DVI video
  • Note: no HDMI audio
  • 2022060703-config.txt
  • 2022060703-config-user.txt
  • 2022060703.log

Note: in all cases ssh was OK

5

Why did you do that?

That is a strange one, so what are you connected to?

Upload logs Either via MyOSMC Log Uploader or grab-logs -A

6

Hello
My setup is:
C1 = Dell Computer, Windows host, Ubuntu guest, for ssh
C2 = RPi 3B+, OSMC
C1—KVM—Display, Keyboard, Mouse
C2—KVM
All Display cables are HDMI, and HDMI connection on the Display
Note: this setup worked with the previous OSMC for HDMI video and audio
Display: INSIGNIA NS-24D510NA17

The log I am sending you is using the original configuration (as of updating OSMC).
Used the below, because of no display signal.
osmc@osmc-kodi:~$ grab-logs -A
Logs successfully uploaded.
Logs available at https://paste.osmc.tv/ecivubozew

7

I would suggest that you try without the KVM. KVMs try to play with EDID info and yours may be problematic. Trying without the KVM will rule that out.

8

Bypassing the KVM, fixed the HDMI video and audio.

But, it lost the USB external drive (was: /dev/sdb, now: /dev/sda)
Note: this was working last night
Note: drive is NTFS type

I then disabled my entry in /etc/fstab for the removable device, because OSMC would fail it and halt the boot.
This is the log path: https://paste.osmc.tv/nozisuleme

9

Hi,

i had the same issue, as i need dtoverlay=vc4-fkms-v3d,cma-512 for steamlink to work.

I previously just added
dtparam=audio=on dtoverlay=vc4-fkms-v3d,cma-512 to /boot/config-user.txt, but after upgrading, my tv lost signal after the osmc logo, ssh wouldn’t work, possibly not ready yet.

I found out that removing dtoverlay=vc4-fkms-v3d,cma-512 from /boot/config-user.txt and replacing dtoverlay=vc4-kms-v3d,cma-512 with dtoverlay=vc4-fkms-v3d,cma-512 under the [all] key in /boot/config.txt works. I think there is a bug in loading both.

And dtoverlay=audio=on is needed for hdmi audio with snd-bcm2835.enable_compat_alsa=1 cmdline.

But there seems to be a slight problem: skipping time in videos results in 1-2 seconds of video stuttering/tearing, after that, everything looks normal again.