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[Bug 576970] New: slow network connection with Intel 82578DM ethernet card (e1000e module)
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Thu, 4 Feb 2010 12:33:47 +0000
  • Message-id: <bug-576970-21960@xxxxxxxxxxxxxxxxxxxxxxxx/>
http://bugzilla.novell.com/show_bug.cgi?id=576970

http://bugzilla.novell.com/show_bug.cgi?id=576970#c0


Summary: slow network connection with Intel 82578DM ethernet
card (e1000e module)
Classification: openSUSE
Product: openSUSE 11.2
Version: Final
Platform: x86-64
OS/Version: openSUSE 11.2
Status: NEW
Severity: Major
Priority: P5 - None
Component: Network
AssignedTo: bnc-team-screening@xxxxxxxxxxxxxxxxxxxxxx
ReportedBy: jens.grabinger@xxxxxxxxxxxxxxxxxxxxxxx
QAContact: qa@xxxxxxx
Found By: ---
Blocker: ---


User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; de; rv:1.9.2.0)
Gecko/20100115 SUSE/3.6.0-1.2 Firefox/3.6

I am using an onboard ethernet card with Intel 82578DM chipset. The network
link is up, but only at 10 Mbps, not at 100 Mbps as supported by the network
switch. Here is the relevant output of dmesg:

Feb 3 19:46:01 lse80 ifup: eth0 device: Intel Corporation 82578DM
Gigabit Network Connection (rev 05)
Feb 3 19:46:01 lse80 kernel: [ 11.601827] e1000e 0000:00:19.0: irq 31 for
MSI/MSI-X
Feb 3 19:46:01 lse80 kernel: [ 11.652583] e1000e 0000:00:19.0: irq 31 for
MSI/MSI-X
Feb 3 19:46:01 lse80 kernel: [ 11.653201] ADDRCONF(NETDEV_UP): eth0: link is
not ready
Feb 3 19:46:01 lse80 ifup: eth0
Feb 3 19:46:01 lse80 ifup: IP address: 131.188.140.80/24
Feb 3 19:46:01 lse80 ifup:
[...]
Feb 3 19:46:03 lse80 kernel: [ 13.467215] e1000e: eth0 NIC Link is Up 10
Mbps Full Duplex, Flow Control: None
Feb 3 19:46:03 lse80 kernel: [ 13.467221] 0000:00:19.0: eth0: 10/100 speed:
disabling TSO
Feb 3 19:46:03 lse80 kernel: [ 13.469035] ADDRCONF(NETDEV_CHANGE): eth0:
link becomes ready


I tried to force the e1000e module to use 100 Mbps using ethtool. But I
couldn't get the link up with that connection speed.

There seems to be an upstream patch addressing that problem:
http://lists.openwall.net/netdev/2010/01/22/61
Will this patch make it into the next kernel update of openSUSE 11.2? Or is
there a workaround?

Reproducible: Always

Steps to Reproduce:
1.
2.
3.

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