Hi all,
Recently I am working on neutralizing
ME for various
platform whose ME cannot be completely removed. After I have
finished building coreboot for a ga-b75m-d3h board with its own ME
neutralized, I tried to use a neutralized version of Samsung
lumpy's ME (located at 3rdparty/blobs/mainboard/samsung/lumpy/me.bin,
which I have successfully applied to my Lenovo x220) on the
board, due to its smaller size.
This trial is mostly successful, except that the integrated
graphic card completely ceased to work and disappeared from the
PCI bridge, to my suprise. In such situation, a discrete graphic
card should be used instead.
It seems the
integrated graphic card is
dominated by ME, related to some Digital Restriction Management
schemes like PAVP or something.
On the other hand, in
situations where
discrete
graphic cards are feasible or headless usage, this scheme may be
useful, as more space is left for CBFS.
Persmule.