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Issue created by Mathieu Westphal@mwestphalMaintainer

primusrun is not using discrete GPU with paraview

with a builded ParaView (5.6 or master), on a laptop with a discrete nvidia card and an integrated intel chipset, the following behavior can be observed :

./bin/paraview
Help -> About -> OpenGL : Mesa...

optirun ./bin/paraview
Help -> About -> OpenGL : Nvidia...

primusrun ./bin/paraview
Help -> About -> OpenGL : Mesa

The last part is unexepected

With ParaView 5.6 release, this behavior does not appear.

This behavior is not only a reporting error but a performance drop with complex rendering can also be observed.

glxinfo and glxgears do not show this behavior.

On ArchLinux, with nvidia 418.56, bumblebee 3.2.1, primus 20151110

Edited by Mathieu Westphal
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