Graphics issue on Ubuntu 20.04 / Radeon Vega

Hi,
The notes on the driver link you provided don't show a 3200u as a supported model on the list for that specific driver.

Reverting to the default driver form or presentation of amdgpu would be step 1.

Apparently, there has been some regression to a buggy state for this line of cpu's with latest kernel and so on...
Some google fu (searched: "amdgpu 3200u") reveals this among some other notable results https://gitlab.freedesktop.org/mesa/mesa/-/issues/2814
 

This applies to arch linux, however, some useful information may be gleaned from this. I'd advise to thread carefully though.

Hope this helps.

Edit: found a more recent post, might as well... https://community.amd.com/thread/252724

Edited July 25, 2020 by JRup
moar info!

That was very helpful! I can confirm that adding

AMD_DEBUG=nodmacopyimage

to /etc/environment fixes the problem on Ubuntu 20.04.

Hi,

Glad to hear it helps.

 

Regards.

The above fix didn't resolve my issue. For now I have tossed in an nvidia card but to help with debugging see my outputs below.

I am having the same issue and even with AMD_DEBUG=nodmacopyimage the issue is present. I have tried everything that I was capable of doing. I am looking for the instructions on how to use the kernel parameter amdgpu.ppfeaturemask=0 but that isn't something I have done before.This issue seems to show only in browser windows while video or image content is present on the screen. I thought I had fixed it with the nodmacopyimage in the profile but today the issue came back. The output from my amdgpu_firmware_info is:

`VCE feature version: 0, firmware version: 0x00000000

UVD feature version: 0, firmware version: 0x00000000

MC feature version: 0, firmware version: 0x00000000

ME feature version: 47, firmware version: 0x000000a2

PFP feature version: 47, firmware version: 0x000000b9

CE feature version: 47, firmware version: 0x0000004e

RLC feature version: 1, firmware version: 0x00000227

RLC SRLC feature version: 1, firmware version: 0x00000001

RLC SRLG feature version: 1, firmware version: 0x00000001

RLC SRLS feature version: 1, firmware version: 0x00000001

MEC feature version: 47, firmware version: 0x000001ab

MEC2 feature version: 47, firmware version: 0x000001ab

SOS feature version: 0, firmware version: 0x00000000

ASD feature version: 0, firmware version: 0x21000016

TA XGMI feature version: 0, firmware version: 0x00000000

TA RAS feature version: 0, firmware version: 0x00000000

SMC feature version: 0, firmware version: 0x00041e40

SDMA0 feature version: 41, firmware version: 0x000000a9

VCN feature version: 0, firmware version: 0x0110901c

DMCU feature version: 0, firmware version: 0x00000001

VBIOS version: 113-PICASSO-115`