This usually happens when the driver for your video card doesn't support OpenGL correctly. Please make sure that you have the most recent drivers by visiting your video card manufacturer's website.

Please note that Bidule requires a properly working OpenGL driver. To test your current configuration for OpenGL, please download and try the two following tests (in order):

Bidule works best with any nVidia or ATI Radeon chipsets. Microsoft's default software rendering works fine too.

ATI128, 3Dfx Voodoo3, S3 Savage have OK OpenGL drivers.

Many problems were encountered using Matrox cards. Use with caution.

Also, some people experiencing weird crashes at Bidule startup had to update to DirectX 8.1 to solve them.

In any case, please report crashes. We are trying to find a solution to this.

Keep in mind that some drivers won't work properly with OpenGL at certain color depth (i.e. the number of colors displayed), so you can also try changing the number of colors.

Other: OpenGl info software.

It might seems that the display of the patchbay is really slow. This might occur if your display settings (resolution and colour depth) aren't supported by the OpenGL implementation of your video card driver and the display rendering is then done in software instead of using your video card.

If you take a look at the bidule.log file and you see that the last lines are Initialising Devices... ------------------------------------------------------------------------------- Severe Bidule Crash Detected (The Severe Bidule Crash Detected might not be there) This means that Bidule was unable to open/query and close one of your audio drivers. Bidule tries to query all of the available audio card drivers at startup which is a different behavior than most other audio softwares and this could expose problems you wouldn't normally see in other softwares. Main causes of crashing are badly uninstalled audio drivers, some users have also reported problems when Internet stream capturing softwares are installed. (such would usually install an audio driver and set it as the default output device to be able to capture)