JohnS wrote: > On Mon, 2011-02-07 at 19:43 +0000, James Pearson wrote: > > >>I assume something does probe some how - which is what I trying to work >>out. i.e. what exactly does the probe and where in the startup sequence >>is this done? > > > I told you already...the kernel calls insmod first...then "init_moule" > then a "another sub r gets called to an actual init_module r That is how the kernel loads a module when insmod is run - but what tells the system to load the sound modules at system start-up? > Why not explain exactly your problem? Theres a reason you need to know > and y? I have a system with 2 sound 'cards', one on the motherboard and one on a PCI-E card. Both cards use the Intel HDA chipset (snd-hda-intel.ko driver). When the on-board card has been disabled via a jumper, none of the sound modules get loaded at system start-up. I can manually load the snd-hda-intel module and the PCI-E card is found. Therefore, I would like to find out why the PCI-E card is not found and the driver not loaded at system start-up. Hence my original question, if anyone knows at what point in the start up procedure the system loads the sound modules. Thanks James Pearson