i am having this problem too.
this is the message from my syslog:
Oct 2 05:59:56 fr-dev11 kernel: [ 670.201294] mlx4_core: Mellanox ConnectX core driver v1.1 (Oct 2 2014)
Oct 2 05:59:56 fr-dev11 kernel: [ 670.201319] mlx4_core: Initializing 0000:04:00.0
Oct 2 05:59:56 fr-dev11 kernel: [ 670.201465] mlx4_core 0000:04:00.0: Missing UAR, aborting.
This is the mlxfwmanager knows:
Querying Mellanox devices firmware ...
Device #1:
----------
Device Type: ConnectX3
Part Number: 0W0RM9_0Y3KKR
Description: ConnectX-3 Dual Port 10GbE SFP+ Adapter card for Dell
PSID: DEL0A80000023
PCI Device Name: /dev/mst/mt4099_pci_cr0
Port1 MAC: f452143d2ef0
Port2 MAC: f452143d2ef1
Versions: Current Available
FW 2.32.5100 N/A
PXE 3.4.0306 N/A
UEFI 12.5.0022 N/A
Status: No matching image found
This is my kernel:
Linux 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
This is what lshw knows:
*-network UNCLAIMED
description: Ethernet controller
product: MT27500 Family [ConnectX-3]
vendor: Mellanox Technologies
physical id: 0
bus info: pci@0000:04:00.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm vpd msix pciexpress cap_list
configuration: latency=0
resources: memory:da700000-da7fffff memory:d9800000-d98fffff
This is what lspci knows:
04:00.0 Ethernet controller: Mellanox Technologies MT27500 Family [ConnectX-3]