Re: Boot Linux through GRUB2 on AMD DB-FT3b-LC

[Andrei Borzenkov]

30.11.2016 18:59, Grigore Lupescu пишет:
> Hello Andrei,
> 
> Unfortunately not - I cannot attach a serial. My only options excluding
> HDMI output are LPC (ordered header) and USB (with hacks, don't want to try
> this one yet). Any suggestions on debug would definitely help.
> 
> From the looks of it it might be a Coreboot problem rather than a GRUB2
> problem but I am trying to wage out the possibility of something in the
> middle.
> 
> Problem1 - Overflow each time I reach end of screen

I cannot reproduce it using grub-qemu (the closest to coreboot platform
I could build in short time). If you explain how to create coreboot+grub
for booting in qemu, I'll try it. I have some old notebooks that I can
use for testing, so I may try coreboot on real hardware if I get
detailed enough how-to.

> Problem2 - Linux doesn't boot. I execute the below to boot:
> grub> set root=(hd0,gpt2)
> grub> linux /boot/vmlinuz-4.4...-generic root=/dev/sda2
> grub> initrd /boot/initrd.img-4.4...-generic

set debug=all

> grub> boot
> 

Well, if system really resets you may not have time to actually read
debugging output ... recently there was discussion about using serial
PCI card on help-grub; do you have USB-to-serial adapter?

> I use a USB to SATA drive where I have the SSD plugged in (and legacy
> Ubuntu Linux x64 4.4 on it).
> 
> ### 1 ### Everything works
> AMI BIOS 2.17.1246
> Core Version 4.6.5.4
> UEFI 2.3.1; PI 1.2
> AMI BIOS + GRUB2.02beta2-36ubuntu3.1 => terminal_output=gfxterm, see
> USB-SATA SSD as (hd0), (hd0, gpt0).., works both on USB2.0 and USB3.0.
> 
> ### 1 ### Overflow screen + cannot boot Linux
> Coreboot latest + GRUB2.02beta3 => terminal_output=vga_text, see USB-SATA
> SSD as (usb0), (usb0, gpt0).., works only on USB2.0.
> 
> Thank you,
> Grigore
> 
> 
> 
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