On Thu, November 30, 2017 05:38, Zoran Stojsavljevic wrote:
Last resort is to flash back the OEM image but I'm hoping to avoid that.
I would suggest to do this step now. As interim step, Then you can verify everything you are trying to do with Coreboot. The first and obvious step is to check for MCU using dmesg, if any exists. If yes, the next step, probably, is to retrieve MCU from BIOS and port it to Coreboot, so you can be sure that this is not an issue.
Then you can verify all the rest:XEN, Cubes and etc., and record use cases wit logs, before returning back to Coreboot.
That is a painful (because this laptop needs to be completely disassembled to get at the flash chip, and it's a Lenovo crippled InsydeH2O EFI BIOS with phone home capability) but logical approach. Thanks, will report back on where this problem bisection leads and/or a resolution when I get there.