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New: atl1 eth0 link continuously down up

Bugme-new Andrew Morton 3 participants 3 messages Nov 3, 2009 – Nov 6, 2009 2 messages not in the archive

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A message that is not in the archive (sent off-list or not yet received): [email protected]/

Andrew Morton

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#1 lore raw

(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface).

Quoted 52 lines · On Sat, 17 Oct 2009 19:17:38 GMT [email protected] wrote:

http://bugzilla.kernel.org/show_bug.cgi?id=14431

           Summary: atl1 eth0 link continuously down up
           Product: Drivers
           Version: 2.5
    Kernel Version: 2.6.30.8-64.fc11.x86_64
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Network
        AssignedTo: [email protected]
        ReportedBy: [email protected]
        Regression: No

/var/log/messages shows
..

Oct 17 21:06:01 blauw kernel: atl1 0000:01:00.0: eth0 link is down
Oct 17 21:06:01 blauw kernel: atl1 0000:01:00.0: eth0 link is up 100 Mbps full
duplex
Oct 17 21:06:02 blauw kernel: atl1 0000:01:00.0: eth0 link is down
Oct 17 21:06:02 blauw kernel: atl1 0000:01:00.0: eth0 link is up 100 Mbps full
duplex
Oct 17 21:06:02 blauw kernel: atl1 0000:01:00.0: eth0 link is down
Oct 17 21:06:02 blauw kernel: atl1 0000:01:00.0: eth0 link is up 100 Mbps full

duplex
..
This behavior is also shown on another machine (same motherboard, other devices), running another kernel.
..

Oct 17 20:47:03 localhost kernel: atl1 0000:01:00.0: Unable to enable MSI: -22
Oct 17 20:47:03 localhost kernel: atl1 0000:01:00.0: eth0 link is up 100 Mbps
full duplex
Oct 17 20:47:06 localhost kernel: atl1 0000:01:00.0: eth0 link is down
Oct 17 20:47:22 localhost kernel: atl1 0000:01:00.0: eth0 link is up 100 Mbps

full duplex
..

Using other ethernet wires or using a older hub instead of a switch does not solve this issue. Each PC attached individually to hub/switch shows the same behavior.

As the logs mention MSI, I have tried to disable MSI using kernel boot option pci=nomsi to no avail.

I have posted the same bug at Fedora, but followup stopped.
https://bugzilla.redhat.com/show_bug.cgi?id=527101

Any suggestions or questions? I will try to help where I can.

#2 lore raw
Quoted 29 lines · Andrew Morton

(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface).

Quoted 23 lines · On Sat, 17 Oct 2009 19:17:38 GMT [email protected] wrote:

http://bugzilla.kernel.org/show_bug.cgi?id=14431

           Summary: atl1 eth0 link continuously down up
           Product: Drivers
           Version: 2.5
    Kernel Version: 2.6.30.8-64.fc11.x86_64
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Network
        AssignedTo: [email protected]
        ReportedBy: [email protected]
        Regression: No

/var/log/messages shows
..

Oct 17 21:06:01 blauw kernel: atl1 0000:01:00.0: eth0 link is down
Oct 17 21:06:01 blauw kernel: atl1 0000:01:00.0: eth0 link is up 100 Mbps full

duplex

Strange. This driver hasn't been changed in quite some time and it's very stable. I'm running Fedora 11 and I don't see the problem at all.

I note that your NIC is autonegotiating to only 100 Mbps instead of 1000 Mbps; is your switch a 100 Mbps device?

Out of curiosity, are you running with or without NetworkManager active?

Increase the verbosity of driver messages and see if any additional light is shed on the subject.

ethtool -s eth0 msglvl 0xffff

Jay Cliburn

A message that is not in the archive (sent off-list or not yet received): [email protected]

#4 lore raw
Quoted 7 lines · johan vdp

As a workaround I have added an Intel e1000 PCI card.
And it is showing the same messages in the logs...
To me this shows that the atl1 driver can be excluded as the cause. No need to reply again to the atl1 mailing list.

I am tempted to buy a new 1Gbps switch. But I can not believe that my old dusty hub is broken in the same way that my switch is.

I've seen this behaviour with a broken cable...

L