[coreboot] Intel me problems

[Nico Huber]

On 16.05.2017 16:22, Alejandro Flores wrote:
> I have a new acer chromebook I have flashed with coreboot + seabios
> payload. It boots to linux ok, but then powers off suddenly after 30 min
> regardless of whether I am using it.
> 
> I disabled hibernation and have been leaving it plugged in, but this
> changes nothing. I suspect a faulty intel me since there is nothing else I
> can think of. The strange thing is I did not use me cleaner but used the
> full me extracted from the original bios. Later I downloaded the stock
> chrombook bios for my model from google and extracted the me module from
> that.
> 
> At this point I have built several variations of roms using the me module
> from the original bios, the google bios, and "cleaned" versions of both but
> always with the same problem of power off after 30 min.
> 
> I am confused as to what the problem may be. I used the intelmetool bundled
> with coreboot but when I run it with the -s flag it seg faults.
> 
> In order to extract the me rom I used ifdtool that is included with
> coreboot.
> ./ifdtool -x bios.bin
> The intel me module is found at offset 00001000 - 001fffff and is 2 mb in
> size. Is that the correct way to do it?
> 
> Any suggestions would be appreciated.

The ME state is logged in the coreboot console. You can read it with
`cbmem -c` (see util/cbmem/ in the coreboot source tree). If you set
the default log level high enough, you should find some lines starting
with "ME:".

Hope that helps,
Nico