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Strange Material colours inside, AMD hardware
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Description

System Information
Operating system: Ubuntu 20.04
Graphics card: CPU: AMD A6-6400K APU (2) @ 3.900GHz
GPU: AMD ATI Radeon HD 8470D

Blender Version
Broken: (example: 2.80, edbf15d3c044, master, 2018-11-28, as found on the splash screen) v2.83.10
Worked: (newest version of Blender that worked as expected) None

Short description of error

Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).

When I create a plane in Blender 2.83.10 and use the Display Render Preview Mode, the light and the plane display odd colours as if they are thermal ( something like that, strong colours ). Please see attached the screenshots

There is a considerable distortion of colours when it is applied to materials. I am not sure whether it is the AMD hardware or Ubuntu 20.04 that is causing this. This issue is almost non-existent in Windows 10 which is a dual boot in the same PC.

It will be great to have a solution to this problem. I love to use Blender and hope that this is a minor glitch. Thanks.

Event Timeline

The AMD ATI Radeon HD 8470D is from the AMD Radeon HD 8000 series and has the old TeraScale 2 micro-architecture. The minimum requirements for Blender 2.8x and 2.9x state that GCN first generation or later is required for running Blender.

Supported Graphics Cards

  • NVIDIA: GeForce 400 and newer, Quadro Tesla GPU architecture and newer, including RTX-based cards, with NVIDIA drivers (list of all GeForce and Quadro GPUs)
  • AMD: GCN 1st gen and newer (list of all AMD GPUs)
  • Intel: Haswell and newer (list of all Intel GPUs)
  • macOS: version 10.13 or newer with supported hardware

Unfortunately, this means that your GPU is below the minimum requirements and we don't provide support for it. Graphics glitches and even crashes due to unpatched bugs in the graphics driver can occur on unsupported hardware. You may have to use a previous release of Blender with lower requirements.

Please create a new report in case the issue is also happening on a system that fulfills the minimum requirements and uses a current graphics driver.

Thanks for the reply. Just one thing, in another bug report, I read that we can make CPU do the work and skip GPU altogether as a solution. Is there any similar workaround possible in this case ?

No, there is no workaround. What you are probably talking about is Rendering. Cycles supports both GPU and CPU rendering while EEVEE does not support CPU rendering. In any case, that is unrelated and will not solve the graphical glitches.

I have an update. The same machine, the same hardware and Windows 10, 2.83 LTS -the latest download from blender.org is working fine. Is there any hope that someone can make it work on Ubuntu 20.04 LTS too ? I know that you already answered. Will some other platform with enough know-how and resources be able to help ? Thanks.

No, the hardware limitations remain, even if you switch the OS. Blender 2.83 LTS might work better but this is not something we can guarantee. You might get other issues or even crashes.