I have a problem, well several, with Gigabyte B760, and probably z790 dh3s AX 1.x motherboards and scientific computing. The short of it, I need to use the cards for computing only, which doesn't work if they are used for graphics (5070 ti and 5090s). I also have rtx 1050 cards. The boards, unlike their predecessors, default to PCIe slot one, no matter what you do, for graphics. If I remove the large cards from slot 1, the board re-registers the second card (slot 3) as 1 and I have graphics, etc. As soon as I place the large cards back, after extensive set up, the slot is again, slot 1, and no graphics. In addition, any proprietary, or nvidia drivers outside of nauveou do not work (command line or black screen, but that is besides the point). What I would like to do is load the initramfs and kernel with only the desired pcie slot 3 as graphics, even if it is a blank screen until initialized, then load the second gpu, slot 1 at the end (or even manually if needed). I have looked at online post, there are not much, but did find udev over setpci, and soone with a small script to embed something in the initramfs, however critiques said the kernel loading takes precedence. I don't know why they removed the option from their bios, to default to whatever is the first pci slot with a gpu. Anyone have any thoughts, or a man page for something related to setting the pcie loading in kernel or initramfs. Aside, I also with the nvidia proprietary drivers in gentoo found some errors are simply file and variable naming (NVEsetconff vs NVEset_conf, etc...). I'm using mint at the moment.
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