First of all, I can't start without saying that KStars/Ekos is a fantastic piece of software! Thank you Jasem for developing it and for the continuous support!
I've now been testing Ekos on my RPI 3, at first I just used it as an INDI server but now that I got myself a new camera which has a rather large resolution, the size of the files I have to download by network can become an issue especially in star parties where network infrastructure is shared and can be under heavy load - hence it then makes a lot of sense to run Ekos on the RPI as well and just operate it with remote desktop. Mostly things work well, I've had a couple of crashes for unknown reasons, but now I've found that the telescope mount control always crashes Ekos on RPI.
Looking at the log output, the last message is:
QXcbIntegration: Cannot create platform OpenGL context, neither GLX nor EGL are enabled
Failed to create OpenGL context for format QSurfaceFormat(version 2.0, options QFlags(), depthBufferSize 24, redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1, stencilBufferSize 8, samples -1, swapBehavior 2, swapInterval 1, profile 0)
Now, since this is RPI I don't think OpenGL is supported. This is probably the issue - but why does the mount control need it? Everything else works just fine.
This is a bit annoying since sometimes it would be handy to move the telescope from my screen instead of operating the hand control.
Other than that, my experience has only been positive
It's great to see that the software runs on RPI and is completely usable.