I have installed three Intel X540-T1's in servers running Ubuntu Server 12.04, but all are non-functional, no link lights, no packets sent or received, and no connection on ip4 or ip6 whether set up as dhcp or static. Also, dmesg doesn't detect cable connection or disconnection.

I updated the default ixgbe driver to Intel's latest version (3.11.33) with no change. The ethernet controller is being reported as X540-AT2 (which might be a problem that I can't figure out how to fix), but the subsystem is X540-T1 so I believe that might be intended.

Does anyone have any experience with this that could assist?

ifconfig eth2
    eth2      Link encap:Ethernet  HWaddr a0:36:9f:14:5f:ea
    inet addr:192.168.101.1  Bcast:192.168.101.255  Mask:255.255.255.0
    UP BROADCAST MULTICAST  MTU:1500  Metric:1<br>
    RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000 
    RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)


ethtool -i eth2
    driver: ixgbe
    version: 3.11.33
    firmware-version: 0x8000037c
    bus-info: 0000:08:00.0
    supports-statistics: yes
    supports-test: yes
    supports-eeprom-access: yes
    supports-register-dump: yes


lspci -vvnns 08:00.0
    08:00.0 Ethernet controller [0200]: Intel Corporation Ethernet Controller 10 Gigabit X540-AT2 [8086:1528] (rev 01)
    Subsystem: Intel Corporation Ethernet Converged Network Adapter X540-T1 [8086:0002]
    Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- DisINTx+
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0, Cache Line Size: 32 bytes
    Interrupt: pin A routed to IRQ 16
    Region 0: Memory at e8000000 (64-bit, prefetchable) [size=2M]
    Region 4: Memory at e8200000 (64-bit, prefetchable) [size=16K]
    [virtual] Expansion ROM at e8280000 [disabled] [size=512K]
    Capabilities: <access denied>
    Kernel driver in use: ixgbe
    Kernel modules: ixgbe