I wanted to point out that the fix for the missing UI (15.04 Ubuntu) has not been pushed yet. We are currently testing it so you will most likely hear from us and the WFTO Devs soon, once it is ready.
@Jossan, @soldout I sent you guys PMs with some info that might be of help with your issues as your logs contain similar errors. We can't be sure whether this is caused on Coherent's end so please let me know whether any of the tips helped out so we can narrow down the case.
I sent you a message with some questions/instructions which will help us a lot with the investigation. I will post more information about the issue once we have gathered enough information to narrow things down.
This particular issue with Ubuntu 15.04 seems to be tied to a problem with the drivers rather than having 2 GPUs. Unfortunately the issue seems to be present on the PTB version as well. Changing the resolution to a non-native one from the Options.txt file seems to be the only current...
It looks like the UI is visible when you run the game with a lower(than the native) resolution in windowed mode. Of course this may vary between different configurations. Still, it is worth trying until we have more information about a possible fix.
In the first log there seems to be a crash in the CoherentUI_Host GPU process.
@Jesse Johnson, can you paste the output of:
ps -ef | grep CoherentUI_Host
while the game is running without UI?
I suppose that either the GPU process is crashing or the rendering is failing either in the...