EFI framebuffer information, then nothing: GENERIC-NODEBUG

On 19/04/2022 23:37, Graham Perrin wrote:
> Sometimes, boot gets no further than EFI framebuffer information. 
> Whenever this occurs, the computer will stop immediately in response 
> to a simple, short press on the power button. …

When I first wrote 
<https://lists.freebsd.org/archives/freebsd-current/2022-April/001829.html>, 
I omitted a key point: I normally install GENERIC-NODEBUG.

I wondered whether GENERIC would be less prone to the problem. For 
around two weeks I ran GENERIC e140d551b78 without a problem.

For the next upgrade, I chose GENERIC-NODEBUG 01235012e5b. Problems 
recurred immediately; a series of six or seven boot failures.

IIRC the first successful boot was with a combination of single user + 
verbose mode.

Since then: a mixture of failures and successes, with an ongoing sense 
that single user + verbose mode is likely to work around the problem.

This morning I changed loader.conf
from boot_verbose="NO"
   to boot_verbose="YES"

– I'll reboot frequently over the next few days, to get an idea of 
whether verbosity reduces the likelihood of the problem. Gut feeling: it 
will make little or no difference (I'm almost certain that I tried 
verbose boot alone, at the boot loader menu, a few times in the past, 
without success).

<https://cgit.freebsd.org/src/commit/?id=e140d551b78> (2022-04-27)

<https://cgit.freebsd.org/src/commit/?id=01235012e5b> (2022-05-12)

% bectl list -c creation
BE                    Active Mountpoint Space Created
n250511-5f73b3338ee-d -      -          64.6G 2021-11-13 15:43
n252381-75d20a5e386-b -      -          23.5G 2022-01-12 23:23
n252450-5efa7281a79-a -      -          6.87G 2022-01-14 19:27
n252483-c8f8299a230-b -      -          7.85G 2022-01-17 14:24
n252505-cc68614da82-a -      -          5.24G 2022-01-18 14:26
n252531-0ce7909cd0b-h -      -          10.1G 2022-02-06 12:24
n252997-b6724f7004c-c -      -          8.10G 2022-02-11 23:07
n253116-39a36707bd3-e -      -          7.58G 2022-02-20 07:03
n253343-9835900cb95-c -      -          9.32G 2022-02-27 14:58
n253776-d5ad1713cc3-b -      -          14.1G 2022-03-18 09:31
n253861-92e6b4712b5-e -      -          14.5G 2022-04-02 16:02
n254268-50e244964e9-d -      -          11.0G 2022-04-09 18:50
n254693-d7696096209-f -      -          14.2G 2022-04-27 17:41
n255078-e140d551b78-h -      -          7.06M 2022-05-11 21:18
n255588-01235012e5b-a -      -          19.4M 2022-05-12 22:23
n255588-01235012e5b-b NR     /          13.4G 2022-05-12 23:36
% uname -aKU
FreeBSD mowa219-gjp4-8570p-freebsd 14.0-CURRENT FreeBSD 14.0-CURRENT #11 
main-n255588-01235012e5b-dirty: Thu May 12 21:45:43 BST 2022 
     root@mowa219-gjp4-8570p-freebsd:/usr/obj/usr/src/amd64.amd64/sys/GENERIC
-NODEBUG amd64 1400058 1400058
% grep -v \# /etc/src.conf | sort








KERNCONF=GENERIC-NODEBUG
WITH_CCACHE_BUILD=yes
WITH_MALLOC_PRODUCTION=yes
%