I know it’s rather old, but is the GLX 560 still supposed to work with the nvidia-38x drivers? When Ubuntu (14.04) upgraded me from 375 to 384, the performance dropped to basically nothing, both as a video card and CUDA. I see the same thing with KDE neon (based on Ubuntu 16.04, I believe) and it doesn’t matter if I use the drivers from Ubuntu or download from nvidea. Returning to 375 downloaded from nvidia restores performance.
The 560 is still supported:
[url]Linux x64 (AMD64/EM64T) Display Driver | 387.34 | Linux 64-bit | NVIDIA
The 38x drivers have a known bug regarding memory management but this shouldn’t have that much of an impact. The nvidia log was created while the 560 was idle, can you either run X on it or run a cuda load and recreate the log?
This should be sufficient, I can see that there’s load on the 560 and yet stays on deep idle (P12). Otherwise detected and working. Maybe change the thread title to reflect that so a Nvidia dev gets attracted.