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Re: install/49470: NetBSD 9.0 RC1 reboots after bootloader (HP Compaq 6005 Pro / AMD Phenom II)

Hi Andrew,

thanks for sharing your thoughts on this issue! I have a working build environment and adding this printf()s following your excellent guide seems like an easy exercise so far. I will try this first and report any findings here as soon as I can.

Kind regrads

Am 11.12.2019 um 11:59 schrieb Andrew Doran:

I understand it's quite difficult to do if you don't have a working build
environment, and getting the kernels in place is tough too, but assuming
that your machine actually gets into the kernel and crashes there rather
than the boot loader, and you are determined to find the problem...

If I wanted to debug this I would try sprinkling printf()s in the kernel's
main() in src/sys/kern/init_main.c, after the call to consinit().

If a machine does not even get that far, or it reboots so quickly that the
messages cannot be read, I keep this assembly function around to dump into
src/sys/arch/amd64/amd64/locore.S (or i386, it should assemble correctly on
both) and then call it from C code.  It produces long beeps from the speaker
and by counting the beeps and following a process of approximate bisection I
can figure out where it's going wrong.

It is an awful lot of work though...


On Wed, Dec 11, 2019 at 09:48:58AM +0100, Matthias Petermann wrote:

thanks for your response. You are right, the issue maps not exactly to the
reported problem as a different CPU is installed.

Anyway, the following actions did not succeed so far:

- booting with boot -12
- booting from SATA hard drive with pre-installed NetBSD
- USB options not configurable in BIOS
- older Release NetBSD 6.0 did also not boot (hangs at the second spinner
123456\ but does not reboot)
- switching from AHCI to legacy/native IDE mode
- Booting FreeBSD 11.2 also hangs in primary bootstrap

Especially the fact that FreeBSD doesn't boot either led me to [1]

I will try to find out if I get to the point where I could debug into the
kernel from my serial console...

Kind regards


Am 09.12.2019 um 22:08 schrieb Andrius V:

It is quite unlikely that your issue is related to the original bug
report since hardware was VIA based (VIA C7-M+VN896) HP 2133 netbook.
The typical actions I would try to do: 1) boot without ACPI/SMP
enabled (boot -12) 2) if you're booting using USB media, you can try
to change some relevant USB options (speed let's say, depends on BIOS)
or try to boot from non USB media (CD, netboot or install it to HDD on
the compatible machine and attach it to your system). If any of those
boot, you can check dmesg output for potentially unsupported hardware.
Finally you can try to boot older releases to see if it worked before.
Otherwise you are probably out of luck (playing with some BIOS options
like switching between AHCI/IDE modes may help but not necessarily).

P.S. should be added as one of email addresses.

On Mon, Dec 9, 2019 at 9:18 PM Matthias Petermann <> wrote:

resent mail, removed from cc (address seams to be not
existing anymore)



Am 09.12.2019 um 14:38 schrieb Paul Goyette:
WARNING: 1 module failed to load

How do I find out which module failed to load here?

Almost certainly, this is a failure to load the ffs filesystem,
since the filesystem module is already built-in to the kernel.

The message can safely be ignored.

That's bad news ;-) So there is no known way to debug this further. I
wish I had more knowledge on possible causes. The box boots without any
issue into Slackware Linux. I should try a BIOS upgrade and/or try a
NetBSD version older than the one where the issue was first reported.

Kind regards

Matthias Petermann <> |
Innovative IT-L?sungen, Systemintegration, Linux/FreeBSD/Unix-Support
Wildparkring 13, 01458 Ottendorf-Okrilla | Tel.: +49 (0)35205 597 991

Matthias Petermann <> |
Innovative IT-L?sungen, Systemintegration, Linux/FreeBSD/Unix-Support
Wildparkring 13, 01458 Ottendorf-Okrilla | Tel.: +49 (0)35205 597 991

Matthias Petermann <> |
Innovative IT-Lösungen, Systemintegration, Linux/FreeBSD/Unix-Support
Wildparkring 13, 01458 Ottendorf-Okrilla | Tel.: +49 (0)35205 597 991

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