On Sat, Nov 11, 2017 at 4:03 AM, [799] via coreboot <coreboot@coreboot.org> wrote:

Hello,

I had to reflash my stock original BIOS after I couldn't get Sleep&Resume working on my Lenovo X230.

I am in a situation where I was able to get 2 situations:

1) Situation 1:
working sleep+resume in Linux.
Additional Payloads works.
Booting into windows (I have a dual boot setup) results in a black screen (no video output)

I assume you're using native graphics init here? In the non-VBIOS init case, the Intel Windows driver expects that the IGD OpRegion ACPI data will be valid/populated, and one of the things needed is the VBT (video bios table) data. This data can be extracted by coreboot from an included (but not executed) VBIOS, or via a separate vbt.bin file. Without one of these two options, you get a black screen. There might also be some other fields in the IGD OpRegion that need to be set correctly. I have all of this working in my own tree, but haven't had a chance to determine which are essential and upstream them.

2) Situation 2:
Extracting the BLOBs from the original ROM and adding them to my Coreboot Bios and using SeaBIOS I was able to boot into windows with graphics.
Unfortunately this breaks:
- Sleep & Resume
- additional Payloads won't work

define "breaks sleep and resume." Breaks how? what OS(es)? Are you re-running the VBIOS on S3 resume? If so, I'd deselect that option/

As I really need to get sleep & resume working an I also want to be able to boot into windows for special use cases (business) I want to rebuild Coreboot from scratch.
Unfortunately I did so several times, no results.

I don't think that the Use Case "Coreboot + Windows + Sleep Resume" is so uncommon and would like to hear if someone has a running setup and what you did to make it work.

I have suspend/resume working under both Windows and Linux, using the following:

VBIOS + SeaBIOS

NGI + vbt.bin + SeaBIOS

NGI + vbt.bin + Tianocore

VBIOS + Tianocore

vbt.bin + UEFI GOP driver + Tianocore

so it's just figuring out what you're missing

Giving up sleep/resume to get the additional freedom of Coreboot is a big trade-off.

Regards

[799]
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