Hi, I'm having serious trouble with Intel PRO/1000 network adapters and the e1000e Linux driver. I have tried every possible fix I can figure out and now I'm reaching to you for new ideas.
The PC (Lanner LEC-2220P) in question comes with two Intel NICs on board. We have installed a third card in a PCIe slot. $ lspci | grep Ethernet 01:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection 02:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection 03:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection The first one is connected to a 10/100 embedded device, the second one to PC with a 1Gb NIC, and the last one to a GigE camera (which produces data some 300Mbs at maximum). No switches in between. The problem occurs in a similar way in four identical systems. Thus, I believe we can rule out hardware failures. The operating system in question is Debian Squeeze, running Linux kernel 2.6.32-5-amd64 by default. It comes with an old e1000e driver module (1.2.something). Most of the time, the connections work fine. However, any of the three devices may go down after a seemingly random amount of time with no clear reason. What I see in system logs is this: Aug 17 22:08:56 XXX kernel: [22144.179804] e1000e: eth0 NIC Link is Down Aug 17 22:08:57 XXX kernel: [22145.806317] e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: Rx/Tx Aug 17 22:08:57 XXX kernel: [22145.806321] e1000e 0000:01:00.0: eth0: 10/100 speed: disabling TSO Sometimes, it is only one of the devices (in this case eth0), sometimes two, sometimes all three. The order in which the links go down follows no pattern. After the failure, the link seems to recover, but it makes the camera to lose some data, and its connection. In some (relatively rare) cases, I don't see the "Link is Down" message at all. Just "Link is Up". I updated the e1000e driver to the latest one found on Intel's site (2.0.0.1). I used "make CFLAGS_EXTRA=-DDISABLE_PM install" to disable power management because this was suggested by some people who had had problems with the driver. The new driver loaded fine but didn't solve the problem. To avoid power management issues I have disabled both pcie_aspm and acpi at boot. I tried setting InterruptThrottleRate=3000,3000,3000 to module parameters. No luck. Setting the rate to 10000 had no effect either. Then, I updated the Linux kernel to 3.2.0 and recompiled the driver as well. That did have an effect: the problem now occured more frequently, so I switched back to the original kernel. I'm out of ideas. Is there anything else I could try out? Best regards, -- Topi Mäenpää Co-founder, Intopii intopii.com +358 40 774 7749 ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
