12.04 Ethernet works sporadically

[chili555]

[ 19.657359] e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None
[ 19.657365] e1000e 0000:00:19.0: eth0: 10/100 speed: disabling TSO

Sounds interesting. Let's have a look at:

dmesg | grep -e e100 -e eth

Thanks.

[ravikanth1988]

Ok. Now All of a sudden the ETHERNET WORKS and I have no idea why it works. Here is the output for what chill has suggested. I think I have to wait for a time when it does not work and post it.

ravikanth@ravikanth-ThinkPad-X200-Tablet:~$ dmesg | grep -e e100 -e eth
[    0.381225] i2c-core: driver [aat2870] using legacy suspend method
[    0.381227] i2c-core: driver [aat2870] using legacy resume method
[    1.989662] e1000e: Intel(R) PRO/1000 Network Driver - 1.5.1-k
[    1.989666] e1000e: Copyright(c) 1999 - 2011 Intel Corporation.
[    1.989703] e1000e 0000:00:19.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20
[    1.989716] e1000e 0000:00:19.0: setting latency timer to 64
[    1.989865] e1000e 0000:00:19.0: irq 45 for MSI/MSI-X
[    2.180512] e1000e 0000:00:19.0: eth0: (PCI Express:2.5GT/s:Width x1) 00:1f:16:1a:0e:7e
[    2.180516] e1000e 0000:00:19.0: eth0: Intel(R) PRO/1000 Network Connection
[    2.180543] e1000e 0000:00:19.0: eth0: MAC: 7, PHY: 8, PBA No: 1008FF-0FF
[   17.125712] ADDRCONF(NETDEV_UP): eth0: link is not ready
[   18.122115] e1000e 0000:00:19.0: irq 45 for MSI/MSI-X
[   18.176099] e1000e 0000:00:19.0: irq 45 for MSI/MSI-X
[   18.176389] ADDRCONF(NETDEV_UP): eth0: link is not ready
[   19.924960] e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None
[   19.924966] e1000e 0000:00:19.0: eth0: 10/100 speed: disabling TSO
[   19.925167] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
ravikanth@ravikanth-ThinkPad-X200-Tablet:~$

[chili555]

I think I have to wait for a time when it does not work and post it.

Yes, please.

In any case, I'm glad it's working.

[ravikanth1988]

I have been watching my laptop after shutting down the IPV6 access. I would like to report that it has been working fine for the past 24 hours. I am assuming it wont be problem in the future either.

The second method suggested by Gone Fishing has worked. Thank you everybody for taking the time to help me out.

[ravikanth1988]

This is output for

dmesg | grep -e e100 -e eth

when ETHERNET WAS NOT WORKING

Attention: Chilli and Gone Fishing

ravikanth@ravikanth-ThinkPad-X200-Tablet:~$ dmesg | grep -e e100 -e eth
[    0.389221] i2c-core: driver [aat2870] using legacy suspend method
[    0.389224] i2c-core: driver [aat2870] using legacy resume method
[    2.015379] e1000e: Intel(R) PRO/1000 Network Driver - 1.5.1-k
[    2.015383] e1000e: Copyright(c) 1999 - 2011 Intel Corporation.
[    2.015420] e1000e 0000:00:19.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20
[    2.015434] e1000e 0000:00:19.0: setting latency timer to 64
[    2.020679] e1000e 0000:00:19.0: irq 45 for MSI/MSI-X
[    2.212559] e1000e 0000:00:19.0: eth0: (PCI Express:2.5GT/s:Width x1) 00:1f:16:1a:0e:7e
[    2.212563] e1000e 0000:00:19.0: eth0: Intel(R) PRO/1000 Network Connection
[    2.212586] e1000e 0000:00:19.0: eth0: MAC: 7, PHY: 8, PBA No: 1008FF-0FF
[   21.500249] ADDRCONF(NETDEV_UP): eth0: link is not ready
[   22.184260] e1000e 0000:00:19.0: irq 45 for MSI/MSI-X
[   22.240093] e1000e 0000:00:19.0: irq 45 for MSI/MSI-X
[   22.240363] ADDRCONF(NETDEV_UP): eth0: link is not ready
[   23.756877] e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None
[   23.756882] e1000e 0000:00:19.0: eth0: 10/100 speed: disabling TSO
[   23.757065] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 5933.087783] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPC_.EC__._Q27] (Node f74283f0), AE_NOT_FOUND (20110623/psparse-536)
[ 5989.077889] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPC_.EC__._Q27] (Node f74283f0), AE_NOT_FOUND (20110623/psparse-536)
[ 8379.665093] e1000e 0000:00:19.0: PCI INT A disabled
[ 8379.665103] e1000e 0000:00:19.0: PME# enabled
[ 8379.665111] e1000e 0000:00:19.0: wake-up capability enabled by ACPI
[ 8380.826554] e1000e 0000:00:19.0: wake-up capability disabled by ACPI
[ 8380.826559] e1000e 0000:00:19.0: PME# disabled
[ 8380.826640] e1000e 0000:00:19.0: irq 46 for MSI/MSI-X
[ 8383.616282] e1000e 0000:00:19.0: irq 46 for MSI/MSI-X
[ 8383.672125] e1000e 0000:00:19.0: irq 46 for MSI/MSI-X
[ 8383.672404] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 8385.212880] e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None

[ravikanth1988]

can somebody help?

[ravikanth1988]

got a router and that solved the problem