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Problems Raspberry Pi2, openFrameworks and VNC

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@Nigel wrote:

I've successfully downloaded/unpacked/ complied OF on my RPi 2 with the latest Raspian Jessie image. The examples I have tried run just fine as long as I have an HMDI monitor connected to the Pi. If I access the Pi via VNC (I've tried tightvnc and x11vnc) then the examples launch from a terminal window, but no graphics window appears. Not good, as my application needs VNC .

This has been discussed to some extent in other posts (here and other forums) but I'm still not clear on the cause of this, and whether there is an easy fix. So the Qs:

  1. Is it a matter of getting the right VNC server - I've read most versions of VNC do not support hardware accelerated software. Is there a version that does?

  2. If compatibility with hardware acceleration is the problem, could an alternative solution be to switch to Raspian Wheezy and OF 0.8.4 (which I believe does not use hardware acceleration?). My graphics needs are not complex, so could probably cope with a lack of hardware acceleration.

  3. Or is the problem more fundamental? I read a comment that indicated that output from the RPi GPU only goes to the HDMI port. In which case, any form of VNC will fail.

Any thought guys & gurus?

Many thanks

N

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