The following reply was made to PR kern/23420; it has been noted by GNATS.

From: Manuel Bouyer <bouyer@antioche.eu.org>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@NetBSD.org, gnats-admin@NetBSD.org,
	netbsd-bugs@NetBSD.org, "Greg A. Woods" <woods@planix.com>
Subject: Re: kern/23420: new ahc driver doesn't probe Seagate ST318436LC drives at the right speed
Date: Sun, 1 Oct 2006 23:41:35 +0200

 On Sun, Oct 01, 2006 at 01:25:02AM +0000, Greg A. Woods wrote:
 > The following reply was made to PR kern/23420; it has been noted by GNATS.
 > 
 > From: "Greg A. Woods" <woods@planix.com>
 > To: gnats-bugs@NetBSD.org
 > Cc: 
 > Subject: Re: kern/23420: new ahc driver doesn't probe Seagate ST318436LC drives at the right speed
 > Date: Sat, 30 Sep 2006 21:24:25 -0400
 > 
 >  > From: Sergey Svishchev <svs+pr@grep.ru>
 >  > To: gnats-bugs@netbsd.org
 >  > Subject: Re: kern/23420
 >  > Date: Sat, 30 Sep 2006 11:52:54 +0400
 >  > 
 >  >  This looks very much like the problem I've seen on Linux machines.
 >  >  The 'new' aic7xxx driver would negotiate lower speed than 'old'
 >  >  (aic7xxx_old) driver.  Newer driver reads SEEPROM and per-target speed
 >  >  settings stored there.  In my case, SEEPROM settings forced all targets
 >  >  to negotiate 10MB/s speed, while Adaptec BIOS displayed "40MB/s" as
 >  >  current setting.  The fix was to change all speed settings to something
 >  >  else, save them, and change them again to desired speed.
 >  
 >  Coincidentally I recently did approximately just that on another
 >  controller and machine recently where the drives weren't being probed at
 >  their maximum speed, though I didn't bother setting the desired speed --
 >  I just set the maximum for the controller.
 >  
 >  I guess we can write this off as an Adaptec BIOS bug.
 >  
 >  This PR should probably be turned into a documentation bug and maybe a
 >  note can be added to the manual page suggesting this
 >  change-and-save-twice work-round for adjusting drive parameters via the
 >  adapter's BIOS.
 
 Can you provide a patch for the ahc(4) man page ?
 
 -- 
 Manuel Bouyer <bouyer@antioche.eu.org>
      NetBSD: 26 ans d'experience feront toujours la difference
 --