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Thread: How to switch from Radeon to AMDGPU on Ubuntu 16.04?

  1. #1
    Join Date
    Jun 2008
    Ubuntu 16.04 Xenial Xerus

    Question How to switch from Radeon to AMDGPU on Ubuntu 16.04?

    Hey there, I'm on Ubuntu 16.04 64bit. I've manually compiled the latest kernel at this time, Kernel 4.9-RC5 and have it up and running no problem.

    I made sure to tick CONFIG_DRM_AMDGPU_CIK before compiling it.

    I have installed the Padoka PPA, so the following:
    glxinfo | grep OpenGL
    OpenGL vendor string: X.Org
    OpenGL renderer string: Gallium 0.4 on AMD BONAIRE (DRM 2.48.0 / 4.9.0-rc5, LLVM 4.0.0)
    OpenGL core profile version string: 4.5 (Core Profile) Mesa 13.1.0-devel - padoka PPA
    OpenGL core profile shading language version string: 4.50
    OpenGL core profile context flags: (none)
    OpenGL core profile profile mask: core profile
    OpenGL core profile extensions:
    OpenGL version string: 3.0 Mesa 13.1.0-devel - padoka PPA
    OpenGL shading language version string: 1.30
    OpenGL context flags: (none)
    OpenGL extensions:
    OpenGL ES profile version string: OpenGL ES 3.1 Mesa 13.1.0-devel - padoka PPA
    OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.10
    OpenGL ES profile extensions:
    Even after restarting, I cannot seem to get the AMDGPU driver to run.
    lspci -k | grep -EA2 'VGA|3D'
    01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Bonaire XTX [Radeon R7 260X/360]
    	Subsystem: PC Partner Limited / Sapphire Technology Bonaire XTX [Radeon R7 260X/360]
    	Kernel driver in use: radeon
    This chip is a 2nd Gen GCN chip, so it should be a GCN 1.1 Sea Island chip. Hence why I ticked the CIK config above before compiling the kernel.

    Before compiling my own kernel and installing it, when running:
    lsmod | grep radeon
    I would get:
    radeon               1515520  4
    i2c_algo_bit           16384  1 radeon
    ttm                   102400  1 radeon
    drm_kms_helper        159744  1 radeon
    drm                   364544  65 radeon,ttm,drm_kms_helper
    After installing the new kernel I get:
    radeon               1499136  78
    i2c_algo_bit           16384  2 amdgpu,radeon
    ttm                   102400  2 amdgpu,radeon
    drm_kms_helper        159744  2 amdgpu,radeon
    drm                   364544  8 amdgpu,radeon,ttm,drm_kms_helper
    So I clearly have the needed amdgpu parts. One thing I did not do is update the firmware for my card, as I don't know how to do this. I did read that some had to do this, but I'm uncertain if it's necessary in my case.

    I have tried blacklisting radeon by use of the blacklist.conf file and also by trying to create a radeon.conf file in /etc/modprobe.d/ but no luck. No matter where I place the file, radeon is always defaulted to upon startup. I also have a 10-amdgpu-pro.conf in usr/share/X11/xorg.conf.d/ but it doesn't seem to change the scenario.

    My question is how do I disable Radeon and force AMDGPU into play? I'm ok with breaking my system.

    Why do I want to do this? I want to utilize the RADV Vulkan implementation, and this is the only way. Yes, I can use AMDGPU-PRO for Vulkan, and I already have. I specifically want to use RADV in this use case.

    Any help is greatly appreciated!

  2. #2
    Join Date
    Jul 2013

    Re: How to switch from Radeon to AMDGPU on Ubuntu 16.04?

    I would like to know myself a method to make the switch, starting from scratch. it will be very useful.
    my amd e2-7110 eats 30-40% more power than windows 10 while using radeon driver.

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