Description of problem: My laptop's wired network card is always reconnecting Version-Release number of selected component (if applicable): 3.9.8-300.fc19.x86_64 How reproducible: Use a machine with a e1000e driver on a wired network for a while. Steps to Reproduce: 1. Plug in an ethernet cat5/6 cable 2. use the network 3. wait for failure Actual results: Network goes down and reconnects, breaking all connections Expected results: Network stays on untill deactivated or disconnected. Additional info: I've run f17 and f18 on this machine without issue. [root@hamburger ~]# lspci | grep -i network 00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04) 25:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 34) [root@hamburger ~]# lsmod | grep e1000 e1000e 245861 0 ptp 18413 1 e1000e from /var/log/messages: Jul 7 03:03:21 hamburger NetworkManager[880]: <info> (enp0s25): IP6 addrconf timed out or failed. Jul 7 03:03:21 hamburger NetworkManager[880]: <info> Activation (enp0s25) Stage 4 of 5 (IPv6 Configure Timeout) scheduled... Jul 7 03:03:21 hamburger NetworkManager[880]: <info> Activation (enp0s25) Stage 4 of 5 (IPv6 Configure Timeout) started... Jul 7 03:03:21 hamburger NetworkManager[880]: <info> Activation (enp0s25) Stage 4 of 5 (IPv6 Configure Timeout) complete. Jul 7 03:08:04 hamburger kernel: [ 4655.916054] e1000e: enp0s25 NIC Link is Down Jul 7 03:08:04 hamburger NetworkManager[880]: <info> (enp0s25): carrier now OFF (device state 100, deferring action for 4 seconds) Jul 7 03:08:08 hamburger NetworkManager[880]: <info> (enp0s25): carrier now ON (device state 100) Jul 7 03:08:08 hamburger kernel: [ 4659.504019] e1000e: enp0s25 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx [root@hamburger log]# grep -c "carrier now OFF" messages 58
[ra@hamburger ~]$ dmesg | grep e1000e [ 17.610780] e1000e: Intel(R) PRO/1000 Network Driver - 2.2.14-k [ 17.610783] e1000e: Copyright(c) 1999 - 2013 Intel Corporation. [ 17.610953] e1000e 0000:00:19.0: setting latency timer to 64 [ 17.611017] e1000e 0000:00:19.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode [ 17.611054] e1000e 0000:00:19.0: irq 56 for MSI/MSI-X [ 17.811717] e1000e 0000:00:19.0 eth0: registered PHC clock [ 17.811721] e1000e 0000:00:19.0 eth0: (PCI Express:2.5GT/s:Width x1) 00:9c:02:1e:8a:1c [ 17.811723] e1000e 0000:00:19.0 eth0: Intel(R) PRO/1000 Network Connection [ 17.811782] e1000e 0000:00:19.0 eth0: MAC: 10, PHY: 11, PBA No: FFFFFF-0FF [ 43.695744] e1000e 0000:00:19.0: irq 56 for MSI/MSI-X [ 43.796563] e1000e 0000:00:19.0: irq 56 for MSI/MSI-X [ 51.251798] e1000e: enp0s25 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx [ 4346.164379] e1000e: enp0s25 NIC Link is Down [ 4352.116733] e1000e: enp0s25 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx [ 4655.916054] e1000e: enp0s25 NIC Link is Down [ 4659.504019] e1000e: enp0s25 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx [ 4722.654451] e1000e: enp0s25 NIC Link is Down [ 4726.165446] e1000e: enp0s25 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx [ 6236.707566] e1000e: enp0s25 NIC Link is Down [ 6240.332664] e1000e: enp0s25 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx [ 6281.646081] e1000e: enp0s25 NIC Link is Down [ 6286.857641] e1000e: enp0s25 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx [ 6441.901181] e1000e: enp0s25 NIC Link is Down [ 6445.503198] e1000e: enp0s25 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx [ 7650.995082] e1000e: enp0s25 NIC Link is Down [ 7654.561175] e1000e: enp0s25 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
[root@hamburger log]# grep -c "carrier now OFF" messages* messages:95 messages-20130707:61 messages-20130714:20
Strange. My machine has been connected to the same switchport for fedoras 17, 18 and 19. On a hunch I muved it to another port and the problem seems to have resolved itself :) The timing of this switchport malfunction (with the release of f19) is remarkable.