Can you try to launch the 0.17 demo from terminal as SDL_VIDEO_X11_XINERAMA=0 ./factorio When I start the game with SDL_VIDEO_X11_XINERAMA=0, the screen flickers and the game never appears. I hear the game, but I don't see it. The mouse also jumps to monitor 6, but the game isn't anywhere to be fou...

That sir, is an excellent suggestion!

The most recent version I'm able to run without issue is 0.16.51 (demo, stable). Beginning with 0.17.69 (demo, stable), the game refuses to use the gpu for rendering.

Thanks for trying. Hopefully one of the devs has some ideas!

It's not, in general, possible to move an OpenGL application from one GPU to another. Multi-GPU setups require code that simply doesn't exist on Linux. I bet it's doing software rendering. That said, I wouldn't even begin to know how to debug this. You're on your own here, I"m afraid. I'm not ...

Heh, so I do have six monitors -- factorio is correct there. I have to use two gpus as each gpu supports a maximum of three outputs. This is why I have to use xinerama. I followed your suggestion regarding the preferred-display-index config and it was commented out. I uncommented it and set it to 0,...

It seems you've disabled RANDR somehow. That extension can be summed up as "xinerama version 2"; you want it enabled. Custom xorg configuration? It should run fine without any config at all, assuming you're not on a laptop, so try that first. I don't know why a lack of RANDR would break F...

It seems that my factorio is not using my gpu but using my cpu for rendering 0.151 Initialised OpenGL:[0] llvmpipe (LLVM 9.0.1, 128 bits); driver: 3.3 (Core Profile) Mesa 20.0.4 0.151 [Extensions] s3tc:yes; KHR_debug:yes; ARB_clear_texture:yes, ARB_copy_image:yes 0.151 [Version] 3.3 0.186 Graphics ...

The game is initialized with correct GPU driver, so from the game's side rendering should just be accellerated by GPU. I am convinced it is some driver/Linux issue related to having multiple GPUs in the system. I don't know how to help. You could try to change preferred screen option in Graphics se...

I have the same problem, reported it back in March. :/

viewtopic.php?f=49&t=81523&p=494402

Sorry for the delayed response. I never got any e-mails -- and I see now that I can check a box to be notified of replies. I'm not using wayland, I use I3 which still uses X. It did work before, before the revamp. I've tried this on both Ubuntu 18.04 and have now switched to Arch on the same machine...

Unfortunately, the latest version of Factorio doesn't recognize the GPU on Linux and resorts to software rendering, leading to an unplayable 1-3 FPS. I see in the log that Factorio does claims to have initialized the OpenGL: 0.067 System info: [CPU: Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz, 8 cores,...