From owner-freebsd-current@FreeBSD.ORG Fri Feb 11 03:18:27 2005 Return-Path: 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 4013F16A4CE for ; Fri, 11 Feb 2005 03:18:27 +0000 (GMT) Received: from web54007.mail.yahoo.com (web54007.mail.yahoo.com [206.190.36.231]) by mx1.FreeBSD.org (Postfix) with SMTP id ADE7D43D39 for ; Fri, 11 Feb 2005 03:18:26 +0000 (GMT) (envelope-from spamrefuse@yahoo.com) Received: (qmail 68201 invoked by uid 60001); 11 Feb 2005 03:18:26 -0000 Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; b=F9SSnUdr7k4c9YtHJkgcCL8u1YSBGUV+xZj/mLzsL3mSaw2kaF6zhKUvE6AmEEZLjSu+FYStal0AOKlMzIutffvx0Bew37B6FuclRNcHHWtFaEZGGdkTP11V37CdT6RfZ18tsGEPd17YE5h6V0IGItffsnyOM7c9cdTrcYyW4kw= ; Message-ID: <20050211031826.68199.qmail@web54007.mail.yahoo.com> Received: from [147.46.44.181] by web54007.mail.yahoo.com via HTTP; Thu, 10 Feb 2005 19:18:26 PST Date: Thu, 10 Feb 2005 19:18:26 -0800 (PST) From: Rob To: FreeBSD current , FreeBSD Stable MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: atapci VIA 82C596B UDMA66 controller: problem for 5.X ? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Feb 2005 03:18:27 -0000 Hi, I have two PCs, with apparently a somewhat old motherboard, since there's a maximum support for UDMA66 by the harddisk controller. The attached harddisks are newer and allow a higher speed of UDMA100. This combination of older motherboard and newer harddisk causes great problems with 5.X (it never did with 4.X). I have irregular crashes of X and even crashes at initial bootup. All this is solved by using hw.ata.ata_dma="0", which forces the harddisk to use the very low speed of PIO4 :(. Both PCs have a VIA 82C596B UDMA66 controller. I wonder if that is the problem for 5.X ? On these two PCs, the output is of grep -i ata /var/run/dmesg.boot is: -- PC1 ------------------- atapci0: port 0xe000-0xe00f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 7.1 on pci0 ata0: channel #0 on atapci0 ata1: channel #1 on atapci0 ad0: 43979MB [89355/16/63] at ata0-master PIO4 acd0: CDROM at ata1-master PIO4 -- PC2 ------------------- atapci0: port 0xc000-0xc00f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 7.1 on pci0 ata0: channel #0 on atapci0 ata1: channel #1 on atapci0 ad0: 76319MB [155061/16/63] at ata0-master PIO4 ad1: 16448MB [33420/16/63] at ata0-slave PIO4 acd0: CDRW at ata1-master UDMA33 ------------------------------------------------- I consider this a serious drawback of 5.3. Any idea how this can be resolved? Best regards, Rob. __________________________________ Do you Yahoo!? Yahoo! Mail - Helps protect you from nasty viruses. http://promotions.yahoo.com/new_mail