Description of problem: The new Blender user interface depends on OpenGL 3.1+. With no proprietary alternative for AMD GPUs there is only Mesa. The screen effect is of overlays flashing on and off and an inability to select parts of a mesh with the mouse. Any attempt to select an edge or vertex causes the tool selection icon for "Move" to be selected and "Select" is deselected. When rendering an image there is a random visible/invisible appearance of rendered tiles and when completed, all tiles but two are visible. The saved image on disc is correct. The degree of the visible render problem can be alleviated by selecting "2D Texture" rather than "Automatic" or "GLSL" for the Viewport drawing method in User Preferences, but not eliminated. The choice of "2D Texture" or "GLSL" has no effect on viewport behaviour. The problem persists regardless of Blender 2.80 version. I have verified this with a variety of local build RPMs from git20190504 to the current Mageia release. The problem also exists in all Blender.org nightly builds I have tried over the same period. The problem first appeared after installation of recent Mageia updates, including Mesa 19.1 rc3.1. Version-Release number of selected component (if applicable): The problem first appeared after installation of recent Mageia updates, including Mesa 19.1 rc3.1, on or about 21 May. How reproducible: There is no way I can find to stop it from happening every time I use Blender 2.80. However a similarly configured Mageia 7 system which still uses Mesa 19.1 rc3.5 and has not had the 21 May updates applied, works perfectly well with all of the many Blender 2.80 iterations at my disposal, including the current Mageia release. Steps to Reproduce: 1. 2. 3.
Correction to above: How reproducible: There is no way I can find to stop it from happening every time I use Blender 2.80. However a similarly configured Mageia 7 system which still uses Mesa 19.1 rc2.5 and has not had the 21 May updates applied, works perfectly well with all of the many Blender 2.80 iterations at my disposal, including the current Mageia release. I mistakenly referred to the working Mesa as rc3.5 when it is actually rc2.5
It may not be relevant, but the reason for updating the Mageia 7 installation was to test a partial solution to Bug 24546 (https://bugs.mageia.org/show_bug.cgi?id=24546) This required an update to the nvidia-current packages, and nvidia-cuda-toolkit in order to test a workaround to that problem. All of the other updates looked harmless enough, even desirable, so I installed every update.
Created attachment 11028 [details] Correct appearance of Blender viewport This screengrab from the Mesa 19.1 rc2.5 system shows the correct display of Viewport overlays and the 2D grid
Created attachment 11029 [details] Blender viewport decorations missing This pic is from the Mesa 19.1 rc3.1 system and clearly shows the missing elements.
yes, I'm aware of the bug. There is a known regression in upstream mesa, I will fix it up today
CC: (none) => tmb
Assignee: bugsquad => tmb
Please try with mesa-19.1.0-0.rc3.2.mga7
I believe this got resolved?
CC: (none) => fri