Public bug reported:

I am on Ubuntu 12.04. Its a dell lattitude 6420 laptop. I am noticing
frequent LAN disconnections. Just before every disconnection there is a
dell_wmi error as shown below.

e1000e 0000:00:19.0: eth0: 10/100 speed: disabling TSO
[ 1190.525436] dell_wmi: Received unknown WMI event (0x0)
[ 1279.383744] e1000e: eth0 NIC Link is Down
[ 1284.473867] dell_wmi: Received unknown WMI event (0x0)
[ 1300.769015] e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: 
None
[ 1300.769027] e1000e 0000:00:19.0: eth0: 10/100 speed: disabling TSO
[ 1305.763005] dell_wmi: Received unknown WMI event (0x0)
[ 1446.603329] e1000e: eth0 NIC Link is Down
[ 1451.663142] dell_wmi: Received unknown WMI event (0x0)
[ 1468.045413] e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: 
None

Please resolve this bug, I am preparing to push for Ubuntu 12.04 at my
workplace and most of  the machines are dell lattitude 6420.

** Affects: ubuntu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/933437

Title:
  LAN disconnections

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