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

On Sat, 17 Oct 2009 19:17:38 GMT bugzilla-daemon@bugzilla.kernel.org 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: drivers_network@kernel-bugs.osdl.org
>         ReportedBy: johan_vdp@hotmail.com
>         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.

On Nov 3, 2009, at 12:40 AM, Andrew Morton wrote:

>
> (switched to email.  Please respond via emailed reply-to-all, not  
> via the
> bugzilla web interface).
>
> On Sat, 17 Oct 2009 19:17:38 GMT bugzilla- 
> daemon@bugzilla.kernel.org 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: drivers_network@kernel-bugs.osdl.org
>>         ReportedBy: johan_vdp@hotmail.com
>>         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

> CC: atl1-devel@lists.sourceforge.net; netdev@vger.kernel.org;
> johan_vdp@hotmail.com; bugzilla-daemon@bugzilla.kernel.org;
> bugme-daemon@bugzilla.kernel.org
> From: jcliburn@gmail.com
> Subject: Re: [atl1-devel] [Bugme-new] [Bug 14431] New: atl1 eth0 link
> continuously down up
> Date: Tue, 3 Nov 2009 18:19:37 -0600
> To: akpm@linux-foundation.org
> 
> 
> On Nov 3, 2009, at 12:40 AM, Andrew Morton wrote:
> 
> >
> > (switched to email.  Please respond via emailed reply-to-all, not  
> > via the
> > bugzilla web interface).
> >
> > On Sat, 17 Oct 2009 19:17:38 GMT bugzilla- 
> > daemon@bugzilla.kernel.org 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: drivers_network@kernel-bugs.osdl.org
> >>         ReportedBy: johan_vdp@hotmail.com
> >>         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
> 
> 
Buying a new switch solved the problem.
Sorry to have bugged the kernel buglists.
Thanks four your help.

 		 	   		  
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