[Nottingham] ME disable jumper

[Boris]

Boris Migda via Nottingham

Having had another frustrating attempt at getting my Brother DCP-750 CW
printer to talk to my Laptop on my Xubuntu OS
and failed, I took some pic's of Xubuntu complaits one of which says "Filed
to download repository information" "Check your internet connection" this
was after I had entered the Wifi password into the printer whist attempting
a Wifi connection and if my memory serves me right the same message
appeared when attempting to connect via USB, which prints using windows.

Please help

Boris

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On Sat, Jan 20, 2018 at 8:04 PM, Vadim Mankevich via Nottingham <
nottingham at mailman.lug.org.uk> wrote:

> Long story short, after cleaning firmware for my desktop PC with
> me_cleaner and reflashing it back with a Raspberry Pi I took photos (just
> in case Martin asks to write an article :) for the website)
> On those photos I found markings on the motherboard implying there is a
> “ME Disable jumper”!!!
> After a bit of search I found it and moved from Normal to ME Disable
> position.
>
> intelmetool from coreboot utils now reports “Security override via jumper”
> and other stuff that implies ME is disabled.
>
> The jumper is not advertised or documented but a quick search on the net
> revealed that there are such jumpers on other motherboards as well. I
> couldn’t find definitive answers what the jumper actually disables. Of
> course, I understand that ME is still operational. me_cleaner removed
> modules and made ME stop before modules are loaded after initialising the
> CPU. So in my case it’s difficult to draw conclusions whether the jumper
> would suffice.
>
> I thought I should write to urge people check their motherboards for a
> similar jumper or switch. I also hope that maybe someone can help
> understand whether ME disable jumper is actually enough to disable the
> hated ME.
>
>
> References:
>
> https://github.com/corna/me_cleaner/wiki/External-flashing
>
> https://github.com/coreboot/coreboot/tree/master/util/intelmetool
>
> --
> vadim at mankevich.co.uk PGP key fingerprint
> 0xC046022A3A91455AF0C9BB2404BF882B1905C772
> Retrieve from hkps://pgp.mit.edu
> or https://keybase.io/vmankevich
>
>
> --
> Nottingham mailing list
> Nottingham at mailman.lug.org.uk
> https://mailman.lug.org.uk/mailman/listinfo/nottingham
>
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