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/dev/dri/ missing on GitHub Actions

Hey!

I am using GitHub Actions to execute some .NETCore tests on the Ubuntu Virtual Machines that they provide: https://github.com/actions/virtual-e...u16/20200512.2

The code testing suite involves the use of OpenTK graphics which uses the /dev/dri to display graphics (to the best of my knowledge).

When executing the code I get the following error:

Code:

Error Message:

  System.TypeInitializationException : The type initializer for 'OpenTK.DisplayDevice' threw an exception.

  ----> System.IO.DirectoryNotFoundException : Could not find a part of the path '/dev/dri'.

  Stack Trace:

    at OpenTK.DisplayDevice.get_Default()

  at OpenTK.GameWindow..ctor(Int32 width, Int32 height)

It fails on both Ubuntu 18.04 and 16.04 so I will post the info for 16.04.
The installed software on the virtual machine can be seen here: https://github.com/actions/virtual-e...1604-README.md

OS Information as provided by GitHub actions log:

Code:

 Current runner version: '2.262.1'

Operating System

  Ubuntu

  16.04.6

  LTS

Virtual Environment

  Environment: ubuntu-16.04

  Version: 20200512.2

  Included Software: https://github.com/actions/virtual-environments/blob/ubuntu16/20200512.2/images/linux/Ubuntu1604-README.md

If more information is required let me know.

I can execute bash commands when setting up the runner, but outside of that I do not have much control over the virtual environment.

Does anyone know what is missing, and potentially if there is something I can apt-get to fix the /dev/dri path missing?

Thanks!

/dev/dri/cardX would be more like it I'd think. I assume you are working on a freedesktop direct rendering manager issue?

Quote:

Originally Posted by jefro (Post 6137936)

/dev/dri/cardX would be more like it I'd think. I assume you are working on a freedesktop direct rendering manager issue?

Apologies for the late reply;

Yes, exactly. To the best of my knowledge OpenGL uses Mesa https://dri.freedesktop.org/wiki

I've been able to fix this issue on dekstops by simply updating drivers or Linux versions however in a virtual environment, such as GitHub actions, I have been unable to fix it.

I'm uncertain what exactly would expose the desired dev/dri/cardX path

The bit of code that causes the error is specifically the following call to the GameWindow constructor (https://opentk.net/api/OpenTK.GameWi..._System_Int32_)