Hello again Here is a patch that _might_ improve things wrt. agp support for i830 chipsets. I do not have a i830 box at hand, so it has not been tested (well, it compiles ok. ;-). If you feel like crashing your PC once more, try the patch (against 2.4.15) and tell me whether things became better/worse. I assumed that the i830mg without secondary device was working in a way that is similar to other Intel chipsets. Good luck :-) Nicolas. -- Nicolas Aspert Signal Processing Laboratory (LTS) Swiss Federal Institute of Technology (EPFL)