linux-kernel - Re: tg3: transmit timed out, resetting

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Date:	Thu, 7 Jun 2012 15:21:36 -0700 (PDT)
From:	Christian Kujau <lists@...dbynature.de>
To:	Ethan Zhao <ethan.kernel@...il.com>
cc:	LKML <linux-kernel@...r.kernel.org>, mcarlson@...adcom.com
Subject: Re: tg3: transmit timed out, resetting

On Thu, 7 Jun 2012 at 05:52, Christian Kujau wrote:
> On Thu, 7 Jun 2012 at 17:47, Ethan Zhao wrote:
> >     Could you try 3.5RC1+ with pcie_aspm=off kernel parameter ?

Hm, this didn't help.

> > I notice there are some AER errors ( UnsupReq+,RxErr+) with the tg3
> > from you lspci output

Isn't lspci just listing ASPM _capabilities_ there? Booting with 
pcie_aspm=off showed almost the same output:

   http://nerdbynature.de/bits/3.4.0/tg3/lspci_aspm.diff.txt

So, the workaround for me is to disable "scatter-gather":

 ethtool -K p2p1 sg off

With that, no more errors show up and the interface keeps working.

Christian.

> pci0000:00: Requesting ACPI _OSC control (0x1d)
> pci0000:00: ACPI _OSC request failed (AE_NOT_FOUND), returned control mask: 0x1d
> ACPI _OSC control for PCIe not granted, disabling ASPM
> --------
> 
> I have seen these messages in 3.2.0 (an Ubuntu kernel), can't say that I 
> have seen them before, they did not show up when I booted this 2.6.38 
> Ubuntu kernel.
> 
> I'll try booting with pcie_aspm=off and see what it gives...
> 
> Thanks,
> Christian.
> 
> PS: AFAICT, Ubuntu's 2.6.38 [0] had these options set:
> 
> --------
> CONFIG_PCIEASPM=y
> # CONFIG_PCIEASPM_DEBUG is not set
> --------
> 
> With 3.5.x, my .config has:
> 
> --------
> CONFIG_PCIEASPM=y
> # CONFIG_PCIEASPM_DEBUG is not set
> CONFIG_PCIEASPM_DEFAULT=y
> # CONFIG_PCIEASPM_POWERSAVE is not set
> # CONFIG_PCIEASPM_PERFORMANCE is not set
> --------
> 
> [0] https://launchpad.net/ubuntu/natty/i386/linux-image-2.6.38-15-generic/2.6.38-15.60
> 
> -- 
> BOFH excuse #338:
> 
> old inkjet cartridges emanate barium-based fumes
> 

-- 
BOFH excuse #396:

Mail server hit by UniSpammer.
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