Re: [E1000-devel] Verifying that disabled K1 power state in Gigabit is in effect

[Dave, T. N <tus...@in...>]

Jon,

82579 is e1000e driver and not e1000. 
Getting to the issue, what is the motherboard? Are you running the latest BIOS?

-Tushar

>-----Original Message-----
>From: Jon Nordby [mailto:jo...@sq...]
>Sent: Monday, March 04, 2013 7:35 AM
>To: e10...@li...
>Subject: [E1000-devel] Verifying that disabled K1 power state in Gigabit
>is in effect
>
>Hi,
>
>we are experiencing some packet losses with the Intel 82579 (on a Compulab
>Intense PC) when running in Gb mode, both when running 2.6.32 and 3.8.
>Losses are typically 40 packets/minute when running UDP traffic at about
>250Mbit/s.
>Some investigation show that the chip going in and out of K1 power state
>could cause this[1], but  I checked the e1000 code, and it looks like that
>the workaround of disabling when in Gigabit mode should be in place
>already.
>
>Is there any way to verify that K1 power state is indeed disabled for my
>particular setup? Reading out the registers etc?
>Are there any other things that could explain the packet losses and be
>done to fix them?
>
>Regards,
>Jon Nordby
>
>1. http://communities.intel.com/thread/32022,
>http://www.intel.com/content/dam/www/public/us/en/documents/specification-
>updates/6-and-c200-chipset-specification-update.pdf, p 24.