From owner-freebsd-current@FreeBSD.ORG  Sat Jan 21 17:46:32 2006
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Date: Sat, 21 Jan 2006 18:46:29 +0100
From: =?ISO-8859-1?Q?C=E9dric?= Jonas <cedric@virtual-globe.net>
To: freebsd-current@freebsd.org
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Subject: Re: -CURRENT freeze at boot after update
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On Sat, 21 Jan 2006 11:59:45 -0500
Nicolas Blais <nb_root@videotron.ca> wrote:

> Hi,
>=20
> I did my usual saturday -CURRENT sync (buildworld/kernel) this morning an=
d my=20
> machine freezes at boot. The freeze occurs right after HD detection, and=
=20
> before (or during) mounting partitions :
>=20
> sc0: <System console> at flags 0x100 on isa0
> sc0: VGA <16 virtual consoles, flags=3D0x300>
> vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
> ums0: Logitech USB-PS/2 Optical Mouse, rev 2.00/11.10, addr 2, iclass 3/1
> ums0: 3 buttons and Z dir.
> Timecounter "TSC" frequency 2493036546 Hz quality 800
> Timecounters tick every 1.000 msec
> ad0: 78167MB <Maxtor 6Y080L0 YAR41BW0> at ata0-master UDMA133
> acd0: DVDR <HL-DT-ST DVDRAM GSA-4163B/A105> at ata1-master UDMA33
> ad4: 76319MB <Seagate ST380817AS 3.42> at ata2-master SATA150
> <FREEZE HERE>
>=20
> Booting my kernel.old works fine (fortunatly!).  I'm now looking at recen=
t=20
> changes that could be the cause between Jan 7 and now.
>=20
> Any suggestions?
>=20
> Nicolas.

Hi,

I had the same problem, it seems to be related to=20
http://lists.freebsd.org/pipermail/freebsd-current/2006-January/059782.html.
Disable DMA on your CD/DVD drives, and it will work much better ;-)

/boot/loader.conf -> hw.ata.atapi_dma=3D0

But I hope this will be fixed in the future...


--=20
Best regards,=20
 C=E9dric Jonas