Booting an Intel NUC8i5BEH in EFI mode from install-amd64-minimal-20190207T214502Z.iso results in black screen. Boot succeeds though because you can ssh remotely to the LiveCD environment. dmesg reveals one failure:
[ 1.055159] efifb: invalid framebuffer address
An Ubuntu bug tracks this to GRUB2 and was patched only 5 days ago.
Could this patch be applied to the GRUB2 on the install media? It would also need to be applied to the GRUB2 in Portage because the same thing happens after you install Gentoo with genkernel and GRUB2 in EFI mode onto the machine in question and try to boot it. dmesg and lspci attached.
Steps to Reproduce:
1. Boot from latest minimal install CD in EFI mode (on some modern hardware).
2. Screen goes black.
3. Live environment is running because ssh works.
4. dmesg reports efifb: invalid framebuffer address
Screen goes black.
Screen should display output.
Created attachment 564384 [details]
dmesg from affected machine
Created attachment 564386 [details]
lspci -v from affected machine
Created attachment 566386 [details, diff]
Patch that resolves the problem.
The following patch was downloaded from http://git.savannah.gnu.org/cgit/grub.git/patch/?id=886edba8770ccbc3def0af2a7d6b346d00d0af2f and I have applied it to the system in question and verified that it solves the problem.
Looks like this patch is in grub-2.04-r1, so we just need to wait for this to be stabilized
This days we run into the same using grub-2.02 on a Fujitsu Exprimo Desktop (FUJITSU ESPRIMO D738/D3601-A1, BIOS V126.96.36.199 R1.21.0 for D3601-A1x 07/04/2019):
* The grub menu was working, but starting kernel show not any video output.
* Because we also boot a prebuild rootfs with a running sshd , we found that only video output was not working
We confirm that switching to grub-2.04-r1 solve the issue for us. Thank you for reporting and solving the bug!
00:02.0 VGA compatible controller: Intel Corporation Device 3e92 (prog-if 00 [VGA controller])
Subsystem: Fujitsu Technology Solutions Device 124a
Flags: bus master, fast devsel, latency 0, IRQ 255
Memory at 6000000000 (64-bit, non-prefetchable) [size=16M]
Memory at 4000000000 (64-bit, prefetchable) [size=256M]
I/O ports at 4000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities:  Vendor Specific Information: Len=0c <?>
Capabilities:  Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [ac] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities:  Process Address Space ID (PASID)
Capabilities:  Address Translation Service (ATS)
Capabilities:  Page Request Interface (PRI)
Kernel modules: i915
Thanks for the update