# Tensorbook bionic - No sound

## post by rbkumar on Sep 3, 2019

On a fresh install of tensorbook with Ubuntu 18.04, I have no sound.

I have tried a number of ‘solutions’ suggested online - no luck. (for example: [How to Resolve no sound problem on Ubuntu 22.04](https://zillowtech.com/ubuntu-no-sound.html))

I looked around in the discussion groups here for a solution.

The closest I could find was a reference to a 17.10 but there is nothing for 18.04.

[https://s3-us-west-1.amazonaws.com/lambda-labs-get/oem-audio-hda-daily-dkms_0.201804250316_ubuntu17.10.1_all.deb](https://s3-us-west-1.amazonaws.com/lambda-labs-get/oem-audio-hda-daily-dkms_0.201804250316_ubuntu17.10.1_all.deb)

Could someone at lambda labs, please point to a bionic version of this driver so I can try it?

Unfortunately, there is no entry here for a successful build for bionic: [Packages in “ALSA daily build snapshots” : ALSA daily build snapshots : “Ubuntu Audio Development Team” team](https://code.launchpad.net/~ubuntu-audio-dev/+archive/ubuntu/alsa-daily/+packages)

## post by lvapeab on Sep 5, 2019

I had the same problem. I was able to solve it (after a lot of fight) following the steps 1 to 4 from here: [SoundTroubleshootingProcedure - Community Help Wiki](https://help.ubuntu.com/community/SoundTroubleshootingProcedure)

Now it works fine.

Good luck!

## post by rbkumar on Sep 5, 2019

I have actually gone through that earlier as well, but no luck.

The only thing I changed in the instructions is to adapt to 18.04.

Did you get it to work on 18.04?

## post by rbkumar on Sep 5, 2019

Ok, decided to start from scratch. Reinstalled the Ubuntu 18.04. Sound works before I install Nvidia drivers. But immediately after Nvidia drivers, there is no sound.

To reproduce:

- Do a stock install of Ubuntu 18.04  
- Validate sound is working  
- Then install nvidia-driver  
- _`ubuntu-drivers devices`_  
- _`sudo ubuntu-drivers autoinstall`_  
- _`sudo reboot`_  
- _`nvidia-smi`_ (Driver 430.26 installed and working correctly)  
- Test sound - Failure (No sound on speaker and headphones)  
- install and run pavucontrol to ensure there is Built-in Analog Stereo. Yes  
- run alsamixer and ensure all volumes are turned up  
- test again. Still no sound.

Any help/pointers appreciated.

## post by rbkumar on Sep 5, 2019

Ok, after the Nvidia driver install and reboot, sound wasn’t working.

But I repeated another which I had done just before the driver install:

- `apt update && apt upgrade`

And now sound is back!

Unfortunately, I dismissed the terminal window, so didn’t pay attention to what package got upgraded … sorry.

Sharing just in case anyone else has a similar issue.

## post by rbkumar on Sep 16, 2019

I once again have no sound. So, I tried dmesg and saw

> snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000.

Here is the full output.

```
(base) ravi@ravi-tb:~$ dmesg | grep -C1 -E 'ALSA|HDA|HDMI|snd[_-]|sound|hda.codec|hda.intel'
```