Debian and ToPixMap

I think It's a bug.

After I'm try to get PixMap under Linux with my code:
Handle_Aspect_PixMap pixMap;
pixMap = myView->ToPixMap( 1024, 768, 24 ); //ERROR !
pixMap->Dump( theFile.toAscii().data() );

Also I'm tried:
myView->ToPixMap( 1024, 768, 0 ); //ERROR !
myView->ToPixMap( 1024, 768, 32 ); //ERROR !
myView->ToPixMap( 1024, 768, 16 ); //ERROR !
myView->ToPixMap( 1024, 768, 8 ); //ERROR !
myView->ToPixMap( 1024, 768); //ERROR !

I have error: GlxMakeCurrent failed: 0 errors .

I don't know how it's work under Linux, but under Windows It's working cool.

It's a bug or I'm need additional programs installing under Linux?
Many thanks for your answer.