## Cuda no longer work when installing new ubuntu update

Sep 24, 2018

Hi,
The command works after I added --allow-downgrades. However, when I run a test cuda code, it doesn’t work. It gives me wrong result. This code works before. Below is my test code and output.

### CODE:
```c
#include <stdio.h>
__global__ void cube(float * d_out, float * d_in) {
    // Todo: Fill in this fu…
}
```