Re: diagnosing post-install boot failure

[Ben Collver <bencollver%riseup.net@localhost>]

On Tue, Feb 24, 2026 at 02:26:35PM -0500, Greg Troxel wrote:
> There are likely no logs because probably the disk was never mounted rw.

Thank you for your suggestions!  You were right, there were no logs.

> My guess is that your machine is crashing in the video driver. Note I
> said *guess*.
> 
> I would read the man page for boot(8) and pass -c to boot and then
> something like "disable radeon" and "disable drmkms", perhaps
> i915drmkms.

Unfortunately, i could not type anything after "boot -c".  I assume it
is because this computer only has USB ports and no PS/2 keyboard.

<http://gnats.netbsd.org/41780>

I guess you were right about the video driver too.

What i found is that when i do a custom installation and de-select
set "Graphics driver firmware", then the system will boot after
installation and i can log in at the console.

dmesg shows intelfb0 at i916drmkms0

Thanks again for the help,
-Ben