I would like you to try some specific steps, we need to make *sure* the 
workarounds are not working so we aren't re-inventing the wheel, and I muddied 
the water before by giving you the wrong syntax.

# tar xzvf e1000-8.0.23.tar.gz
# cd e1000-8.0.23/src
# make
# rmmod e1000; insmod ./e1000.ko ignore_64bit_dma=1
# <configure an address>

if this worked correctly
# cat /sys/module/e1000/parameters/ignore_64bit_dma
1

also, did you try 'apic=force' ?  you can change boot options even on a live 
cd, as long as it brings up a bootloader of some kind there should be a way to 
add some options (there always is in my experience).



-----Original Message-----
From: [email protected] [mailto:[email protected]] 
Sent: Tuesday, October 26, 2010 8:05 AM
To: [email protected]
Subject: Re: [E1000-devel] tx unit hang fc11

Any ideas on this Jesse? Does anything jump out at you or am I  
screwed? I do have an Intel box that I could boot a FC12 64bit livecd  
that has the card. And send you the output of if this might help to  
find the issue.

Jon

Quoting Jesse Brandeburg <[email protected]>:

> On Fri, Oct 22, 2010 at 6:17 PM,  <[email protected]> wrote:
>> Quoting "Brandeburg, Jesse" <[email protected]>:
>>
>>>
>>>
>>> On Thu, 21 Oct 2010, [email protected] wrote:
>>>
>>>> I am still having this issue but it seems to only be on x86_64. I used
>>>> a Knoppix disk to boot with and the card worked with no issues using a
>>>> 32bit kernel. I downloaded the latest kernel from kernel.org and
>>>> compiled it and the issue returns using a 64bit kernel.
>>>
>>> huh, that is pretty interesting. &nbsp;Does your machine have >=  
>>> 4GB ram? Did
>>> you ever try enabling the APIC with apic=force kernel boot option?
>>
>> Yes it has 6GB of RAM. I have never tried apic=force as a boot option
>> I will try that. I thought the default was for apic to be enabled so I
>> have tried it with apic=no.
>>
>> I have tried ignore_64bit_dma=1 and still get the same issue. I am
>> using modprobe ignore_64bit_dma=1 e1000, that is the correct way to
>> load it with that option? I have also tried TXDescriptorStep=4 along
>
> I think the syntax is modprobe ./e1000.ko ignore_64bit_dma=1
> of course only after make install
>
>> with and without the ignore_64bit_dma option.
>>
>> I am right now trying to figure out how to get the dmesg.log from
>> knoppix whch seems to truncate it. Tushar has asked me for this so I
>> have been waiting to post back until I got it when I noticed your reply.
>
> you might be able to boot the knoppix kernel with a kernel option to
> increase the dmesg log buffer size (think its called log_buf_size ?).
>
>>
>> While I'm trying to figure out the dmesg problem what else if anything
>> would you need, cat /proc/interrupts or any thing else?
>
> cat /proc interrupts on the 32 bit kernel and the full dmesg (i know
> you're working on it) you maybe just want to do dmesg > file.txt
>
>>
>> Just a note, I have tried the last three versions of the module all
>> with the same results.
>>
>> I am getting close to just installing a 32bit kernel but all of my
>> VM's are 64bit so it would be a huge hassle. :)
>
> The 64bit dma fix is precisely for the problem you're describing, also
> the descriptor step workaround has been known to help in amd systems.
>





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