How to forward GPU and sound to the host?

Published: Tue 25 February 2020
By evpo

In OS.

tags: LXD

Further in the article we will use demo as the user in the host and ubuntu in the container.

Video

Add the below lines to the LXD container config to allow the container's X11 to connect to the host:

devices:
  Xauthority:
    path: /home/ubuntu/.Xauthority
    source: /home/demo/.Xauthority
    type: disk

Forward the X11 socket to the container:

devices:
  X0:
    path: /tmp/.X11-unix/X0
    source: /tmp/.X11-unix/X0
    type: disk

Forward the gpu device:

device:
  mygpu:
    gid: "1000"
    type: gpu
    uid: "1000"

Audio

We will forward ALSA audio system. Go to /dev/snd and list all devices in the directory. Forward all of them as unix-char. Below is an example of one of the devices:

device:
  hwC0D0:
    gid: "29"
    path: /dev/snd/hwC0D0
    type: unix-char

Forward /dev/snd/by-path as disk:

device:
  sndbypath:
    path: /dev/snd/by-path
    source: /dev/snd/by-path
    type: disk

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