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The phrasing there is confusing. Does the NIC break because the ME is neutralized? Then rebooting again with the ME neutralized will break the NIC again. Why w
by sounds 10y ago
The phrasing there is confusing. Does the NIC break because the ME is neutralized? Then rebooting again with the ME neutralized will break the NIC again.
Why would the NIC only break once after the ME is neutralized? The system is started from a fully powered-off state after the ME firmware is updated. Maybe the NIC has some sort of non-volatile state that gets updated when the ME fails to initialize, and then the NIC starts working again. That's the most complex explanation so I thought it unlikely, but I'm happy to hear more from someone who has actually neutralized their ME.
- mmastrac 10y agoThis was confusing to me as well. I'm parsing this as the NIC doesn't work after a cold boot, but does after a warm boot.
- resonanttoe 10y agoApologies this is interpretation not actual experience, so grains of salt. It's not strictly clear to me, but reading through what they're doing, the ME isn't re-engaged or its unclear how it recovers itself. Unless the ME is operating with a recovery binary somewhere that isn't covered by Nicola's neutralizer and the subsequent flashing, I don't think it comes back in to normal operation.
- kuschku 10y agoIt seems to be that the ME takes exclusive control of the NIC, and controls it. After a reboot, the NIC starts without the ME ever taking control of it, so it works.
- corna 10y agoCheck Federico's reply here https://www.coreboot.org/pipermail/coreboot/2016-November/082407.html https://www.coreboot.org/pipermail/coreboot/2016-November/08... tl;dr: power cycle (power off and then turn on, not just reboot) your PC after the ME neutralization.