[MinnowBoard] MinnowBoard MAX 0.93 64-Bit & network lost

Abdelghani Ouchabane abdelghani at ezono.com
Fri Sep 9 07:43:54 UTC 2016

I will redo the test, but I will do it later.

----- Original Message -----
From: "David Scully" <dscully at sbimagingsystems.com>
To: elinux-minnowboard at lists.elinux.org
Sent: Thursday, 8 September, 2016 01:19:15
Subject: Re: [MinnowBoard] MinnowBoard MAX 0.93 64-Bit & network lost


I was able to do a bit more testing today comparing our board to the
Minnowboard Max.

With 0.93 firmware on the Minnowboard Max (8111gs) I was unable to reproduce
this issue running 16.04. 

I actually have a second drive loaded with Ubuntu 14.04 (which uses kernel
3.16) and was able reproduce on our custom board using the iperf tests. So
I'm not sure you'd be more likely to see this under a newer kernel. Whether
it becomes more common is unclear -- I had to run my test for a bit longer
(30 min test) on 14.04 before the disconnect message.

I'm a bit worried that this is a HW problem on our end, but it's still odd
to me that 0.92 works without PCIe disconnects.

It would be nice to see Abdelghani's dmesg when the connection fails to see
if we're running into similar problems. Unlike Abdelghani, when the NIC
disconnects the only way I'm able to save it is a full reboot. Perhaps the
8111gs driver is better at recovering from this condition or he isn't seeing
PCIe disconnects at all?

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