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I need help.

I have installed Ubuntu 20.04 on my Toshiba CB35-B3340, no dual booting. I have no sound from my speakers or headphones.

When I go to sound settings, the only output device shown is HDMI/Display port.

When I run alsamixer, I only see S/PDEF, there is no master or headphones, etc.

I have tried many of the suggestions posted without success. I am not too experienced, but will to try. Any suggestions are appreciated.

jsaff1902
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1 Answers1

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  1. Use aplay -l to see your playback hardware devices.

  2. You should see your device sound card, according to your notebook, look for the one that looks like (Make sure that it refers to analog output):

    card 0: PCH [HDA Intel PCH], device 0: ALC887-VD Analog [ALC887-VD Analog]

  3. Make a new configuration file: sudo gedit /etc/asound.conf

  4. Put the following and save the file:

    defaults.pcm.card 0 # Replace with your card number
defaults.pcm.device 0 # Replace with your device number

  5. Reboot your computer.

  • Here's what I see, the card number is 0, the device number is 3, correct? – jsaff1902 May 07 '21 at 17:19
  • john@john-Swanky:~$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 3: Generic Digital [Generic Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: chtmax98090 [chtmax98090], device 0: Audio () [] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: chtmax98090 [chtmax98090], device 1: Deep-Buffer Audio () [] Subdevices: 1/1 Subdevice #0: subdevice #0 – jsaff1902 May 07 '21 at 17:19
  • Yes, it's correct, that's the sound card. –  May 07 '21 at 17:21
  • Ok, made the file, saved and rebooted. Now when I go to the sound settings, I see that the output device options are now multichannel and analog output-built in audio. When I test, there is no sound. Alsamixer for card 0 still only shows S/PDIF, if I choose card 1 I do see master, headphones, etc. is that important? – jsaff1902 May 07 '21 at 17:47
  • I'm not sure, but perhaps it's because the sound output it's related with the card: 1, device: 0. Try to change the /etc/asound.conf with card number to: 1 and device number to: 0, save and reboot. –  May 07 '21 at 18:03
  • doing that just brings me back to sound settings output device = HDMI/Displayport as my only choice, still no sound output. – jsaff1902 May 07 '21 at 18:25
  • It's important when you choose card 1 in alsamixer, it shows you; master, headphones, etc. The problem is that card 1 isn't selected by default, so your computer is using the HDMI output as default sound output. So, here is what I think can help you: Go back to the old settings in /etc/asound.conf, card number set to: 0, device set to 3, reboot. Then follow to this solution in order to select the analog output as default audio device: https://askubuntu.com/questions/1038490/how-do-you-set-a-default-audio-output-device-in-ubuntu-18-04 –  May 07 '21 at 18:59
  • Ok, now it's getting fuzzy to me. Which part of this pactl list should I be using?john@john-Swanky:~$ pactl list short sinks 0 alsa_output.pci-0000_00_1b.0.stereo-fallback module-alsa-card.c s16le 2ch 44100Hz SUSPENDED – jsaff1902 May 07 '21 at 19:37
  • It's strange that you only have one module. Can you run cat /proc/asound/cards and share their output? –  May 07 '21 at 19:55
  • Here is what I havejohn@john-Swanky:~$ pactl list short sinks 0 alsa_output.pci-0000_00_1b.0.stereo-fallback module-alsa-card.c s16le 2ch 44100Hz SUSPENDED john@john-Swanky:~$ cat /proc/asound/cards 0 [PCH ]: HDA-Intel - HDA Intel PCH HDA Intel PCH at 0x90714000 irq 91 1 [chtmax98090 ]: chtmax98090 - chtmax98090 GOOGLE-Swanky-1.0 – jsaff1902 May 07 '21 at 20:06
  • Well, I don't know if the Chromebook has some special configuration to do in order to make the sound works, but this is what brings to my mind: Go back to sudo gedit /etc/asound.conf. Change the two lines that you wrote by: defaults.pcm.card 0 defaults.ctl.card 0 (no need to reboot) and see if alsamixer loads the card that have "master, headphones, etc" by default, and of course check if you have sound (Check that the "Master" have a 00 at the bottom, that means that is not muted, you can mute/unmute by pressing the key M). –  May 07 '21 at 20:18
  • Re-running alsamixer, default showing master etc,- no and no sound. But on the sound settings, below the output device is what I would call a sound bar (a dashed line) which I can see is fluctuating like the sound signal strength is rising and falling from a youtube I am playing. Does that mean it's working but muted somehow? – jsaff1902 May 07 '21 at 20:38
  • Oh, btw, I never did not hear from you how to complete the solution using pactl. – jsaff1902 May 07 '21 at 20:43
  • The pactl will not work because you only have one module, which is the only one that could be set as default, so there is nothing to do with that, I had been expecting that your output had some analog and hdmi modules. About the sound bar, I can't tell you if that is a good sign or not. Try installing sudo apt install pavucontrol, then execute with pavucontrol, you will get a GUI to manage the sound more easily, perhaps that helps you. –  May 07 '21 at 20:52