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Old 01-06-2023, 10:50 PM   #1
Registered: Feb 2007
Location: Canada
Distribution: Kubuntu 22.04
Posts: 518

Rep: Reputation: 80
AMD RX 6800 + raytracing

Is raytracing supported on the RX 6000 series video cards under Linux?
What about the 7000 series?

glxinfo shows
Device: AMD Radeon RX 6800 (sienna_cichlid, LLVM 13.0.1, DRM 3.42, 5.15.0-57-generic) (0x73bf)

So, officially, OpenGL doesn’t have the raytracing feature (doesn’t expose the hardware’s raytracing ability) and never will have.

They have written the extension specification for Vulkan.

but none of those extensions are shown when I run vulkaninfo via the command line.

I have seen a couple of videos on youtube that claim to be running Linux, using some AMD 6800 XT and they demo MetroExodus and Shadow of the Tomb Raider where they enable raytracing.

This is odd since AMD claims these GPU are RDNA2 and it is suppose to have hardware support for DirectX 12 raytracing.
Old 01-07-2023, 08:18 AM   #2
Registered: Feb 2010
Posts: 308

Rep: Reputation: 193Reputation: 193
RADV_PERFTEST=rt environment variable needs to be set. Also, kernel & mesa is ancient for AMD RDNA2 ray tracing. Use Kernel 6.1.x, at a minimum. Maybe even Kernel 6.2-rcx. Use at least mesa version 22.3.2.
Old 01-30-2023, 03:05 PM   #3
Registered: Feb 2007
Location: Canada
Distribution: Kubuntu 22.04
Posts: 518

Original Poster
Rep: Reputation: 80
I tried installing linux-headers-6.1.6-060106_6.1.6-060106.202301141035_all.deb and some other DEB files in a VM, following an online instruction.
The VM boots up and works but I don't know if I should mess around with my real installation.

I downloaded the wrong driver from
I don't know what that Ubuntu HWE thing is.

So, I downloaded the non HWE Ubuntu 22.04 AMD driver.
This one installed it but WOW, it is 1.6 GB of files downloaded.
I rebooted. Looks like I now have raytracing support in Vulkan.

Quake 2 RTX works.

The downside is that Cyberpunk 2077 crashes. I did not even turn on raytracing.
Shadow of the tomb raider doesn't start up.. I did not even turn on raytracing.
Metro Exodus crashes. . I did not even turn on raytracing.

Are the AMD drivers not tested?
Old 02-22-2023, 01:34 AM   #4
LQ Newbie
Registered: Feb 2023
Posts: 1

Rep: Reputation: 0
This might sounds too easy but installing
sudo apt-get install amdvlk
solved my issues using raytracing.


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