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It's highly possible that Nvidia's RTX 50 GPUs likely don't expect or cannot handle an SMBUS connection, which effectively halts the system from booting up.
Sounds like yet another thing were NVidia is clearly at fault to me
Same. Even though the pins are usually left empty nowadays, getting bugs because of defacto dead pins is... weird. What do Nvidia GPU's expect there?
It seems like the board should still boot with an invalid SMBus connection.
This is clearly on NVIDIA. The PCI spec clearly shows that pins 5 and 6 are for SMBus, even if 99% of boards don’t include those pins you still need to follow spec if your card doesn’t support it or would have issues with it.
this post was submitted on 10 Jun 2025
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