Have you downloaded this beta driver from AMD: Radeon Software 21.40 Beta for Blender 3.0
AMD GPU rendering for now only works with this beta driver in Blender 3.0 beta.

In T71258#1212652, @tsukirockstar wrote:

@Newell Jensen (newell) ATM, I already closed the issue related to a completely broken OpenCl rendering. You can see it here. T86782 This issue on the other hand, still persists in 2.93 LTS. Right now I'm on debian with the drivers working perfectly fine with everything else. I don't know if OpenCL is getting any attention from the developers. I used a dayly buils until 2.93 get OpenCl working. Yet..

Is still slower than a GTX 1050 TI 4Gb RAM and I'm using a RX 590 8GB that should work overwhelmingly better. Is really sad to see that using two old cards (1050TI 4GB and 9604GB) they can work at the same time and you get almost 2000 Cuda cores. But again, I can't afford a modern Nvidia card and the performance of AMD cards with blender right now is not very useful. Laggy and slow cyclñes GPU viewport, no GPU texture baking, broken volumes that cause a freeze until today...

Guys and girls: I'd really love to have a titan or a Quadro. But Nvidia is prohibitive to me right now. I see that you work flawlessly with Nvidia. AMD is not the case.

It seems that AMD cards are ignored by a lot of render engines (even maya is an Nvidia hungry soft) the thing is, that my card works out of the box on linux (as well as almost every AMD card) but you know very well that Nvidia is more than just an issue. I don't want a driver that blows MESA away and do unknown stuff right ahead with the HAL. Even Linus Torvalds has pointed out that Nvidia is not very friendly a lot of times.

Is a shame. I've been using blender since I can remember. I could install windows but it will not offer nothing fancy to me and this issue is on windows too. I just can't try to get a decent VFX.

I understand that out of my country getting a card that works with blender will not represent issues for most. But right now, blender has become a piece of soft that I can't afford. RTX 3070 = ARS 300.000 That equals four months of a "decent" wage down here. And I know that others can say the same. And that's why this is a shame. AMD rules the market in the third world. That should be a helluva motivation to get this working.

Yes, I have this issue too.
Windows 10 20H2, Radeon RX 580. Radeon software version 20.11.2
What is AMD even doing that this happens?
And I thought, new version of Blender, let me update driver after long time.
Then this, well guess I have to back to an older driver.
So does 20.11.1 work or do you have go 20.10?

I'm on windows 10 Pro version 2004, Ryzen 5 1600 (Original AE version), XFX RX 580 4GB radeon 20.71 driver
I have this issue too with Blender 2.83.4 - LTS
In 2.82 it render a clay, but if you click on anything else it freezes blender.

In T77095#995244, @Marius Eckardt (Alirion) wrote:

PBR_Shaders_crash.blend2 MBDownload

This Scene/Material for example renders in final and crashes in Viewport. On Win 10 / Driver 20.7.2 Blender 2.83.4

Massive performance regression between 2.83.0LTS and 2.83.1LTS,
With the bmw27_gpu demo file render time goes from 182sec to 270sec (not counting kernel compilation).
windows 10 2004, RX 580 4GB and Ryzen 1600
GPU driver: Radeon pro driver enterprise 20.q2
It makes RX 580 completely useless for rendering as my CPU is faster than my RX 580 graphics card with the new 2.83.1LTS maintenance update.

I also switched to the Pro driver (20.Q2.1) for RX 580 and works, no artifacts and really fast too. More than twice as fast as blender 2.82 in some scenes.
So OpenCL 2.x works fine on Polaris. I hope the workaround to switch back to OpenCL 1.x is not going to be implemented in the 2.83 LTS, or at least a switch to choose between the versions.
Or maybe recommend that the Pro driver should be used for Blender.

In T77095#957685, @higgsas (higgsas) wrote:

In T77095#955031, @Germano Cavalcante (mano-wii) wrote:

renderer:	version:	user:
AMD Radeon RX 580 2048SP	4.5.13596 Core Profile Context 20.5.1 27.20.1017.1011	@林虎 (Werk)
Radeon RX 590 Series	4.5.13596 Core Profile Context 20.5.1 27.20.1017.1011	@Arturo Rangel (AranMoreno)
Radeon RX 570 Series	4.5.13596 Core Profile Context 20.5.1 27.20.1017.1011	@Pedro Alonso (zonaweb)
Radeon (TM) RX 480 Graphics	4.5.13596 Core Profile Context 20.5.1 27.20.1017.1011	@Jairo Cardenas (custoslux25)
Radeon (TM) RX 480 Graphics	4.5.13596 Core Profile Context 20.5.1 27.20.1017.1011	@Julius (kulius)
Radeon (TM) RX 470 Graphics	4.5.13587 Core Profile Context 20.4.1 26.20.15029.20013	@Alessandro (bobharlinton)
Radeon RX 570 Series	4.5.13596 Core Profile Context 20.5.1 27.20.1017.1011	@Alex (theburgman21)

To me It is clear that the problem is in the driver.
A newer driver is available. Go there to install -> https://www.amd.com/en/support

In T77095#954987, @Germano Cavalcante (mano-wii) wrote:

Could everyone who reproduces the bug provide the system-info.txt (generated in Help -> Save System Info)?

This will allow me to organize the description and can help to better identify what causes the problem.

With Blender version 2.82 I do not have this issue, now testing it with portable zip version.
So this is a all Polaris issue or only certain onces