Joseph Wilhelmi <joe <at> amergint.com> writes: > > Tushar, > > Thanks for the erratum. > > It seems like this might be the same problem as the 82574 since eeprom fix for the825 74 says: > "The value at offset 0x001e (58) has bit 1 unset. This enables the problematic power saving feature. In this > case, the EEPROM needs to read "5a" at offset 0x001e." > > The 82579 erratum states: > "The Intel 82579 Gigabit Ethernet Controller may experience packet Loss at 100 Mbps and 1 Gbps speeds when > the link between the Intel 82579 Gigabit Ethernet Controller and the PCH Integrated LAN Controller is > exiting the Low Power Link (K1) State." > > I am betting that if there is a way to shut off power saving for the 82574 in the eeprom that there would be a way > to do a similar type of work around for the 82579. > > Thanks, > Joe > > On Feb 5, 2013, at 5:30 PM, "Dave, Tushar N" <tushar.n.dave <at> intel.com> wrote: > > > Thanks for the info. You data analysis seems accurate to me and looks like packets are dropped silently. > > To my wonder I have found that there is an erratum for 82579 packet loss issue. It’s a chipset spec update > however there is no existed workaround for this erratum as of now.http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/6-and-c200-chipset-specification-update.pdf > > > > -Tushar
I have also been looking at this problem with dq77kb with both 82574 and 82579lm. The datasheet 82579-gbe-phy-datasheet-vol-2-1.pdf p 91 says the pcie power management control PHY Address Register 17 mentions bit 14 - K1 enable (Enable K1 Power Save Mode). The default is 0b but is this perhaps getting enabled in the driver? Or is there a configuration change that can disable Power Save mode? Wayne ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite It's a free troubleshooting tool designed for production Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap2 _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
