# Problems running CUDA Toolkit 5.5 on OpenSUSE 12.3 with Bumblebee

**URL:** <https://forums.developer.nvidia.com/t/problems-running-cuda-toolkit-5-5-on-opensuse-12-3-with-bumblebee/31553>\
**Category:** CUDA Setup and Installation\
**Created:** [November 27, 2013, 12:52pm UTC](https://forums.developer.nvidia.com/t/problems-running-cuda-toolkit-5-5-on-opensuse-12-3-with-bumblebee/31553 "2013-11-27T12:52:42Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![alealv](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@alealv](https://forums.developer.nvidia.com/u/alealv)\
**Post date:** [November 27, 2013, 12:52pm UTC](https://forums.developer.nvidia.com/t/problems-running-cuda-toolkit-5-5-on-opensuse-12-3-with-bumblebee/31553/1 "2013-11-27T12:52:42Z")

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Hello,

After spending a lot of time trying to get CUDA Toolkit working, I came up with a very weird situation were the Samples (in special the SobelFilter) is working. But a simple code that I run in Nsight does not appear to work.

I got a Lenovo Ideapad U410 with a Gefore 610M (Optimus Technology). That’s why I’ve installed the Bumblebee project (that it’s working fine).

I run the example like this:

```auto
optirun -b none ./SobelFilter

```

And it works just fine. But when I run my code (tested in other GPU) the image does not appear. It only shows a white image with a lot of black dots.  
Another weird thing is that

```auto
optirun -b none nvidia-settings

```

does not appear to work.

Hope you can help me, I’m trying to finish a course of GPU and I need my computer to program.

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**Author:** ![vacaloca](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@vacaloca](https://forums.developer.nvidia.com/u/vacaloca)\
**Post date:** [November 28, 2013, 1:42am UTC](https://forums.developer.nvidia.com/t/problems-running-cuda-toolkit-5-5-on-opensuse-12-3-with-bumblebee/31553/2 "2013-11-28T01:42:55Z")

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The option for -b none means that you are not using graphics rendering. If you intend to use OpenGL or some other API that renders to an X screen, just a simple optirun will do it. On some complex situations, I’ve found I have to use the ‘-b none’ parameter, for example, loading MATLAB and running a MEX file with CUDA code, otherwise I saw strange error messages when attempting to run certain MATLAB operations and my CUDA code did not work.

As for nvidia-settings, you need to specify the X screen explicitely. The default for Bumblebee is :8, so you’d call it as:

```auto
optirun nvidia-settings -c :8

```

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<div class="post-metadata">

**Author:** ![alealv](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@alealv](https://forums.developer.nvidia.com/u/alealv)\
**Post date:** [November 28, 2013, 8:54pm UTC](https://forums.developer.nvidia.com/t/problems-running-cuda-toolkit-5-5-on-opensuse-12-3-with-bumblebee/31553/3 "2013-11-28T20:54:50Z")

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Thanks for you answer vacaloca.

You were right with the nvidia-settings. My problem is that I’m not using OpenGL but OpenCV, and when I create a display window and I try to show the output of a image filtered by the GPU, it’s not working properly. I see a white screen with some black dots.

But the OpenGL example that comes with CUDA (SobelFilter) works just fine. I don’t get what I’m doing wrong, because the same code works properly on a non-Optimus GPU.