I have a new Intel X540-T1 network adapter. I installed the latest ixgbe-4.1.5 driver from Intel. The card is able to get an IP address from DHCP. However, viewing websites and installing packages with apt-get are extremely slow, and BitTorrent just doesn't connect. For example, I downloaded Webmin with apt-get to see if it could be of help. It took a few tries before apt-get was finally able to resolve the domain names, then it took a few minutes to download ~20 megs. However, normally a download like that would take a minute or so (I'm connected to a fast university LAN connection).
Any thoughts? Might some parameters for the ixgbe module help, and if so, which?
$ uname -a
Linux localhost 3.13.0-66-generic # 108-Ubuntu SMP Wed Oct 7 15:20:27 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
$ ifconfig p1p1
p1p1 Link encap:Ethernet HWaddr a0:36:9f:75:5c:ca
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
$ ethtool -i p1p1
$ sudo lspci -vvnns 01:00.0
01:00.0 Ethernet controller : Intel Corporation Ethernet Controller 10-Gigabit X540-AT2 [8086:1528] (rev 01)
Subsystem: Intel Corporation Ethernet Converged Network Adapter X540-T1 [8086:0002]
Physical Slot: 2
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR-
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For your issue, we suggest to update your adapter's driver, you may download the latest driver here -
File name: ixgbe-4.1.5.tar.gz
Version: 4.1.5 (Latest)
Size: 0.4 MB
Website: https://downloadcenter.intel.com/download/14687/Network-Adapter-Driver-for-PCI-E-10-Gigabit-Network-... Download Network Adapter Driver for PCI-E* 10 Gigabit Network Connections under Linux*
Hope this help resolve the issue.