From owner-freebsd-current Mon Mar 24 12:19:43 2003 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5F21537B401 for ; Mon, 24 Mar 2003 12:19:41 -0800 (PST) Received: from neptune.he.net (neptune.he.net [216.218.166.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id DD0B443F75 for ; Mon, 24 Mar 2003 12:19:40 -0800 (PST) (envelope-from fluid@sfmidimafia.com) Received: from sfmidimafia.com (stalwart.codysbooks.COM [209.133.54.175]) by neptune.he.net (8.8.6/8.8.2) with ESMTP id MAA04886; Mon, 24 Mar 2003 12:19:38 -0800 Message-ID: <3E7F6872.1050809@sfmidimafia.com> Date: Mon, 24 Mar 2003 12:20:02 -0800 From: "Scott R." Organization: SFMM User-Agent: Mozilla/5.0 (X11; U; Linux i386; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0 X-Accept-Language: en-us, en MIME-Version: 1.0 To: BelletJr@aol.com Cc: current@FreeBSD.ORG Subject: Re: "READ_BIG command timeout" on CDROM drive References: <28.358293be.2bade7c4@aol.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, hits=-26.2 required=5.0 tests=AWL,EMAIL_ATTRIBUTION,QUOTED_EMAIL_TEXT,REFERENCES, REPLY_WITH_QUOTES,USER_AGENT_MOZILLA_UA autolearn=ham version=2.50 X-Spam-Level: X-Spam-Checker-Version: SpamAssassin 2.50 (1.173-2003-02-20-exp) Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG BelletJr@aol.com wrote: > Hi all! > > When I read cdroms with fbsd 5.0, the following message appears in the > console very often (it seems to happen with every cdrom I try): > >>acd0: READ_BIG command timeout - resetting >>ata0: resetting devices .. >>done > > > It is repeated indefinitely and I can't kill -9 the process that is trying to > read the cdrom. > "umount -f /cdrom" also gets stuck and doesn't write any error messages. > > The driver in use is cd9660: RockRidge Extension. > > I have to reboot to have access to the cdrom drive again. And besides, the > shutdown process does not end every time when the system is in this state. > > Is there a means to have access to the cdrom drive again without rebooting? > I have not seen any bug report for this problem; am I right? Just wanted to report that I fixed this problem by adding: hw.ata.atapi_dma="1" # Run the CD-ROM/DVD in DMA mode to /boot/loader.conf. The system was trying to access the drive using PIO4 rather than DMA and crapping out. I got the idea from another thread today with the subject "playing mp3's and burning a cd". Just an FYI. -Scott To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message