2004-03-11 00:08:53

by Florian Schanda

[permalink] [raw]
Subject: 2.6.3/scsi: Unexpected busfree while idle

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi all,

what does the following message mean (during scsi init at boot)?

scsi0: Unexpected busfree while idle
SEQADDR == 0x1

It appears each second or so, and the system can't move on. It only happens if
a specific drive is on the scsi bus.

Does it mean that drive is broken?

The scsi bios (during system bootup, before linux) detects all discs properly
(including this one), and in the scsi bios i can "veryfiy media" and it
doesn't complain.


Thanks in advance,

Florian
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)

iD8DBQFAT65rfCf8muQVS4cRAhi5AJ4oOQIrN2FkJs+3hWbNHvCFjnW2dACgkiqs
nnJ7vQa0yDwvnnIWZJQiylw=
=BJte
-----END PGP SIGNATURE-----


2004-03-18 14:05:17

by Baecker

[permalink] [raw]
Subject: Re: 2.6.3/scsi: Unexpected busfree while idle

Hi!

> Hi all,
>
> what does the following message mean (during scsi init at boot)?
>
> scsi0: Unexpected busfree while idle
> SEQADDR == 0x1
>
> It appears each second or so, and the system can't move on. It only
happens if
> a specific drive is on the scsi bus.
>
> Does it mean that drive is broken?

Not necessarily. It might just fail to meet the timing specification the
controller is demanding.
A similar effect occured with my scanner attached to a adaptec
controller. BTW, which brand is your controller?

> The scsi bios (during system bootup, before linux) detects all discs
properly
> (including this one), and in the scsi bios i can "veryfiy media" and
it
> doesn't complain.


You might want to try whether the following is working - within the
computers BIOS setup disable both external and internal caching
temporarily. This makes the system extremely sloooooooooooow - but it
made my scanner working. (That's no solution, of course! -- Just a
way to trace the problem.)


> Thanks in advance,
>
> Florian


Hope it works,

Thomas