Comment 21 for bug 1812410

@Kevin (thenewmanium).

I honestly think this is a Intel driver bug. See my thread here on the Intel forums.

https://forums.intel.com/s/question/0D50P00004CK4wZSAT/intel-x550-not-negotiating-to-10gb-on-x299-chipset?language=en_US

Their conclusion was that it was an Asus changed x550 chip. Asus said they won't fix it because they "don't support linux". Intel told me they won't do anything because Asus borked with the firmware. I'm basically stuck in the middle of two vendors not wanting to do anything because one doesn't support it and the other doesn't want to look at it because the other vendor changed it.

If you can validate that its the same issue with different hardware, it might get some traction (fingers crossed).