# How to Safely Remove Lambda Stack

## post by ToniRV on Mar 27, 2019

Hi,

I am encountering a bunch of roadblocks due to the Lambda Stack:

- I need to install protobuf official ubuntu bionic version (protoc 3.0.0).
- I need to install TensorRT which collides with some nvidia package.

How can I safely remove the Lambda Stack PPA, and potentially the packages it installed?

Is it safe to do so? Can I eventually re-install the stack?

Thank you,

## post by sabalaba on Mar 31, 2019

I see – you can always do:

```bash
sudo apt-get remove lambda-stack-cuda
sudo apt-get autoremove
```

That should get rid of it if you’re trying to install something that is conflicting.