[3dprinter-general] Bug#956811: cura: UI not usable because of OpenGL renderer

[Christoph Berg]

Re: Peter Felecan
> Package: cura
> Version: 4.5.0-1
> Severity: important
> 
> Dear maintainers,
> 
> I have a very annoying behavior since a long time but only recently I
> understood the origin of the problem. By the way, it's similar to the
> bug report #951033  "cura: UI not usable in 4.4.1" by having a garbled
> user interface, with buttons not sown and other annoying issues.
> 
> The problem appear when logged in my graphical session, KDE
> Plasma. However, when I open a session through ssh, for example
> "ssh -X myself at localhost" the problem disappears and I have a well
> behaved user interface.
> 
> The only difference that I found is the OpenGL renderer used in the 2
> situations:
> 
> 1. When I'm connected in my graphical session, the renderer is, as
>    provided by 'glxinfo':
> 
>     Vendor: X.Org (0x1002)
>     Device: AMD VEGAM (DRM 3.35.0, 5.4.0-4-amd64, LLVM 9.0.1) (0x694e)
>     Version: 19.3.3
>     Accelerated: yes
>     Video memory: 4096MB
>     Unified memory: no
>     Preferred profile: core (0x1)
>     Max core profile version: 4.5
>     Max compat profile version: 4.5
>     Max GLES1 profile version: 1.1
>     Max GLES[23] profile version: 3.2
> 
> 2. When I open a session, in the same graphical environment but
>    through ssh, as shown above, the renderer is, as provided by
>    'glxinfo':
> 
>     Vendor: VMware, Inc. (0xffffffff)
>     Device: llvmpipe (LLVM 9.0.1, 256 bits) (0xffffffff)
>     Version: 19.3.3
>     Accelerated: no
>     Video memory: 32104MB
>     Unified memory: no
>     Preferred profile: core (0x1)
>     Max core profile version: 3.3
>     Max compat profile version: 3.1
>     Max GLES1 profile version: 1.1
>     Max GLES[23] profile version: 3.1
> 
> My conclusion is that the Cura user interface is not working correctly
> when the renderer used is the one provided by my GPU but works
> correctly on a software renderer.
> 
> Unfortunately I do not have enough experience in the OpenGL context
> but willing to provide more information to or try experiments from
> more experienced users.

Hi Peter,

does the current version 4.8 still exhibit this problem?

Christoph