Ralf Mardorf wrote: > If my mobo isn't fine, I only can try to find a better board, if there > will be one with an integrated graphics around 50,-€. >
Hi Ralf. Tell me you are not using the on-board graphics. If you are, I am going to tell you why it is working under windows, and not with your real-time kernel. On-board graphics use on-board ram. Access to ram is controlled by the kernel. If you have a non-realtime kernel, stuff happens according to a soft timer, and everything happens close to the time they should, because if a video interrupt uses the RAM it does not make a huge difference. There IS jitter, but very little, and you cannot hear it. Real time kernels have stuff timed to hardware. If the screen card comes and uses the RAM out of turn this can cause timing failures, and cause the hardware to miss targets. RT kernels don't like this, because if they don't make it on time, it is not important any more. I had a similar issue with my on-board graphics, and that is why I don't build even one system that does not use an external graphics card. Do get a supported cheap nVidia card, and I mean cheap. I have a GeForce 6200 and it has served me very well so far. I suspect your MoBo IS just fine - just fix it's environment! Thank me later Quentin _______________________________________________ 64studio-users mailing list [email protected] http://lists.64studio.com/mailman/listinfo/64studio-users
