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Date: Fri, 10 Aug 2001 01:24:40 -0700 (PDT)
From: Michael Meiszl <michael@meiszl.de>
To: freebsd-gnats-submit@FreeBSD.org
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Subject: kern/29592: 4.4pre ATAPI Cdrom trouble
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>Number:         29592
>Category:       kern
>Synopsis:       4.4pre ATAPI Cdrom trouble
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Aug 10 01:30:21 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Michael Meiszl
>Release:        4.4prerelease
>Organization:
>Environment:
FreeBSD Proxy.Meiszl.De 4.4-PRERELEASE FreeBSD 4.4-PRERELEASE #1: Thu Aug  9 14:
21:47 CEST 2001     mam@Proxy.Meiszl.De:/usr/src/sys/compile/MAMSMP  i386

>Description:
After cvsupping to 4.4 (stable branch) I've noticed that the IDE CD Rom created serious troubles. Kernel Messages looked like:
Aug  9 11:11:55 Proxy /kernel: acd0: PREVENT_ALLOW command timeout - resetting
Aug  9 11:11:55 Proxy /kernel: ata1: resetting devices ..  device dissapeared! 1
 done
Aug  9 11:11:55 Proxy /kernel: ata1-master: timeout waiting to give command=a0 s
=d8 e=00
Aug  9 11:11:55 Proxy /kernel: acd0: failure to send ATAPI packet command
Aug  9 11:11:55 Proxy /kernel: acd0: failure to execute ATAPI packet command
Aug  9 11:12:25 Proxy /kernel: acd0: PREVENT_ALLOW command timeout - resetting
Aug  9 11:12:25 Proxy /kernel: ata1-master: timeout waiting to give command=a0 s
=d8 e=00
Aug  9 11:12:25 Proxy /kernel: acd0: failure to send ATAPI packet command
Aug  9 11:12:25 Proxy /kernel: acd0: failure to execute ATAPI packet command
Aug  9 11:12:55 Proxy /kernel: acd0: PREVENT_ALLOW command timeout - resetting
Aug  9 11:12:55 Proxy /kernel: ata1-master: timeout waiting to give command=a0 s
=d8 e=00
Aug  9 11:12:55 Proxy /kernel: acd0: failure to send ATAPI packet command
Aug  9 11:12:55 Proxy /kernel: acd0: failure to execute ATAPI packet command

(and so on...)
The system freezes when trying to access the CD Rom (e.g. starting /stand/sysinstall or tying to mount a CD).

I had to disable the ata drivers completely (the cdrom is the only ata device, everything else is on SCSI bus) to get rid of these annoying blocks.

Hardware has not changed from 4.1, 4.2, 4.3.
>How-To-Repeat:
accessing the device
>Fix:
diable ata completely (NOT a real solution)
>Release-Note:
>Audit-Trail:
>Unformatted:

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