Hi, this issue affects my hosts as well. I have about 40 hosts running Intel X550s that were working fine on kernel 4.4.0-141-generic with regard to negotiating 10Gb automatically. Suddenly after booting into 4.15.0-43-generic they automatically negotiate at 1Gb. I have to use ethtool to force them to 10Gb.
These are all Dell R640 so I don't think the issue is tied to the Asus x299. Seems more tightly correlated with the Intel X550 and the kernel version (4.15+ for me). I tried the 5.0-rc3 kernel you linked and the issue still exists there. So, somewhere between 4.4 and 4.13 the issue started and it still has not been fixed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1812410 Title: Intel x550 not negotiating to 10Gb on x299 chipset To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1812410/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
