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Date:      Sat, 25 Oct 2008 03:42:18 +0200
From:      Aragon Gouveia <aragon@phat.za.net>
To:        Jeremy Chadwick <koitsu@FreeBSD.org>
Cc:        Jo Rhett <jrhett@netconsonance.com>, freebsd-stable Stable <freebsd-stable@freebsd.org>, John Baldwin <jhb@freebsd.org>
Subject:   Re: 6.4 RC1 locks up solid on first reboot
Message-ID:  <20081025014218.GA47549@phat.za.net>
In-Reply-To: <20081025012148.GA48297@icarus.home.lan>
References:  <A5A9A4D4-CD16-45FA-A2AC-62C4B5AE976D@netconsonance.com> <200810230627.46478.freebsd-stable@dino.sk> <209111CB-326D-4758-80B2-2505CAE9BCDF@netconsonance.com> <20081025003750.GA42077@phat.za.net> <20081025012148.GA48297@icarus.home.lan>

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| By Jeremy Chadwick <koitsu@FreeBSD.org>
|                                          [ 2008-10-25 03:22 +0200 ]
> > FWIW, I've had problems with 7.0's boot loader locking up too.  I'm running
> > a -stable compile from march and during bootup, if I make too many
> > keypresses the bootup sequence freezes.  Once loader has handed off to the
> > kernel then everything's fine, but I can't make any use of loader's or
> > bootX's command lines without the system freezing.  I'm careful not to touch
> > my keyboard during bootup!
> > 
> > Keyboard and mouse are both USB.
> 
> There are known problems with some BIOSes and "USB Legacy" support.
> Said BIOS option allows a USB keyboard and mouse to be emulated as PS/2
> for operating systems which lack a USB stack, such as MS-DOS -- and more
> importantly, bootloaders!  The FreeBSD bootloader only understands
> AT/PS2 keyboards, which is why that BIOS option is needed.
> 
> Can you confirm this problem happens when using a PS/2 keyboard?

Unfortunately, no luck.  I've just tried:

* USB and PS/2 keyboards both plugged in, enough key input on the PS/2
keyboard causes a freeze

* Just the PS/2 keyboard plugged in, no different.

* Just the PS/2 keyboard plugged in, and USB legacy disabled in the BIOS. 
Same.

Is it possible that excessive build optimisations could lead to this?  Last
time I rebuilt I did so with '-O2 -fno-strict-aliasing' and -march in
make.conf.  I've been meaning to try with a rebuilt loader with no
optimisations...


> P.S. -- Why are you slamming keys during the bootup sequence?  :-)

It's my workstation and I'm usually impatient to get through the bootup
sequence quickly. :)


Regards,
Aragon



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