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.  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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