On Mon, 2003-11-03 at 16:51, Gerhard W. Gruber wrote: > I'm working on a kernel debugger which is similar to SoftICE on WIndows. I > would like to take advantage of the graphics mode when a user activates the > debugger under X and so I was investigating how to solve this. When I use > normal VGA mode it doesn't work on my card when I have X running while a > fellow coder has a similar card with also nvidia drvier and it works for him > (more or less). > Now I wonder what is the relation of the video driver to X. What is happening > when i.e. the user changes to a console? X must save the current state of the > VGA card (i.e. resolution, frequency, etc.) and switch to a suitable console > mode. Similarily when the user switches back to X this has to be reversed and > the state restored. Now I wonder how exactly this is going to happen. Since > nvidia doesn't open it's code I can't look at it, but there has to be some > interface so that X can do this stuff without knowing the details of the > driver. Can I use this interface in kernel modules as well? I think it should > be possible.
You would probably need to use an XFree86 extension. Look at the DGA extension. -- Torgeir Veimo <[EMAIL PROTECTED]> _______________________________________________ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
