2.6.3/scsi: Unexpected busfree while idle

2.6.3/scsi: Unexpected busfree while idle

[Florian Schanda]

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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
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Re: 2.6.3/scsi: Unexpected busfree while idle

[Baecker]

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