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Date: Sat, 9 Apr 2005 19:15:18 GMT
From: Christopher Thielen <chris@luethy.net>
To: freebsd-gnats-submit@FreeBSD.org
Subject: SLIM DRIVE COMBO fails with READ_BIG error on kernel startup
X-Send-Pr-Version: www-2.3

>Number:         79730
>Category:       i386
>Synopsis:       SLIM DRIVE COMBO fails with READ_BIG error on kernel startup
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-i386
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Apr 09 19:20:22 GMT 2005
>Closed-Date:    Mon Jul 30 09:59:33 GMT 2007
>Last-Modified:  Mon Jul 30 09:59:33 GMT 2007
>Originator:     Christopher Thielen
>Release:        5.2
>Organization:
None
>Environment:
FreeBSD .ucdavis.edu. 5.2-RELEASE FreeBSD 5.2-RELEASE #0: Sun Jan 11 04:21:45 GMT 2004     root@wv1u.btc.adaptec.com:/usr/obj/usr/src/sys/GENERIC  i386

>Description:
Though I indicated I was running 5.2, the problem is with 5.3. I tested it with 5.4-rc1 in hopes it was fixed but it is not. Whenever I boot a FreeBSD version after 5.2, the kernel start up on the CD-ROM installer and on the installed OS (if I go ahead with the install) fails with acd0 errors that READ_BIG timed out. This is an eMachines M2350, with SLIM COMBO drive. The exact same machine works fine on 5.2, so I'm not sure what happened. If I boot into safe mode it works fine, but the CD-ROM drive is very slow -- things install at less than 100 kb/s as opposed to the 700 or 800 kb/s if not running in safe mode.
>How-To-Repeat:
Merely attempt to install or use FreeBSD 5.3 or 5.4-rc1.
>Fix:
Run in Safe Mode (though this is really undesirable).
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback 
State-Changed-By: gavin 
State-Changed-When: Sun Jun 24 21:34:46 UTC 2007 
State-Changed-Why:  

The behaviour you have noticed is due to the default for the 
hw.ata.atapi_dma sysctl changing from 0 to 1 before 5.3 was released. 
Booting in safe mode changes this back to zero, which is why the 
CD-ROM drive works again when booted in safe mode.  hw.ata.atapi_dma 
defaulted to zero again for 5.5-RELEASE. 

Do you still have this same problem with a 6.x version of FreeBSD? 

http://www.freebsd.org/cgi/query-pr.cgi?pr=79730 
State-Changed-From-To: feedback->closed 
State-Changed-By: linimon 
State-Changed-When: Mon Jul 30 09:58:31 UTC 2007 
State-Changed-Why:  
Feedback timeout (> 1 month).  The problem is believed to be fixed. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=79730 
>Unformatted:
