Date: Wed, 16 May 2001 11:14:50 -0400 From: pknaack1@netscape.net (Phil Knaack) To: current@freebsd.org Subject: Re: evil ATA Message-ID: <7DB1F87F.0EE451FD.00A56D5A@netscape.net> References: <3B029613.F1DBF613@email.mot.com>
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Greetings: If the formatting of this msg is mucked, I apologize -- this is the only mailer available to me at the moment (ISP problems, and I'm not going to email from work). > > Welp, this is the n-dozenth time that the ATA driver has > > wedged large parts > > of my entire system because it feels it needs to reset my > > CD-R when I'm > > trying to start burning a CD. I get the good old > > > > acd0: WRITE_BIG command timeout - resetting > > ata3: resetting devices .. I don't get this on CD drives, but I do get a lot of ata command timeouts on other ata drives. The worst offender is my quantum bigfoot (a slow ugly drive) -- for a while the system was almost unusable. It was being attached in WDMA2 mode, but if I knock it down to PIO4 or PIO3 it purrs like a kitten. (Of course I should get rid of it anyway, because when it is cold it won't spin up on its own -- I have to pull it out, give it a good ole twist in the air and put it back in real quick-like..) > I don't know this case, but I've seen such behavior with non dma-capable > hdd > on udma controller. take a look at sysctl hw.atamodes (may look like > 'dma,---,---,dma') and try change it (sysctl -w > hw.atamodes=dma,---,---,pio) > to PIO mode. it might help. > > Buki I noticed a few days ago that a new command was added to -current, called "atacontrol". This command provides a real handy way to smack the ata controller into a slower mode. I presume it does something like the above. Cheers, Phil -- -- Phil Knaack __________________________________________________________________ Get your own FREE, personal Netscape Webmail account today at http://webmail.netscape.com/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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