We received some M820 blades recently which have BRCM 10GbE 2P 57810S-k Mezz to M8024 (original not -k version) and they are only getting 1G speed. The OS is Dell-installed ESXi 5.1 latest update release. I have upgraded the firmware on the M8024 to 5.1.4.5 which should be the latest firmware. I have upgraded the BCM57810 firmware to the latest. If I force the BCM57810 to 10000 Mbps the link goes down and does not come back up. I have restarted the M8024. I have tried offline-bundle upgrade of bnx2x drivers in ESXi 5.1. I made sure that SR-IOV, NPAR, and DCB are disabled on the BCM75810 then powered off, removed, and re-inserted the blade. No matter what I have done the link speed remains 1G as reported by ESXi and the M8024 in GUI and via telnet CLI. I have even tried booting the blade off Ubuntu 14.04 64-bit and still only got 1G speed.
What do I need to do to get 10G FD speed working with BCM75810 and M8024?