From owner-freebsd-current@FreeBSD.ORG Tue Oct 5 16:20:24 2004 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 EC14416A4CE for ; Tue, 5 Oct 2004 16:20:24 +0000 (GMT) Received: from spider.deepcore.dk (cpe.atm2-0-53484.0x50a6c9a6.abnxx9.customer.tele.dk [80.166.201.166]) by mx1.FreeBSD.org (Postfix) with ESMTP id 036F643D3F for ; Tue, 5 Oct 2004 16:20:24 +0000 (GMT) (envelope-from sos@DeepCore.dk) Received: from [194.192.25.143] (laptop.deepcore.dk [194.192.25.143]) by spider.deepcore.dk (8.12.11/8.12.10) with ESMTP id i95GKJg3057590; Tue, 5 Oct 2004 18:20:21 +0200 (CEST) (envelope-from sos@DeepCore.dk) Message-ID: <4162C9BD.8060303@DeepCore.dk> Date: Tue, 05 Oct 2004 18:20:13 +0200 From: =?ISO-8859-1?Q?S=F8ren_Schmidt?= User-Agent: Mozilla Thunderbird 0.7.2 (X11/20040802) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Roman Kennke References: <1096906618.695.7.camel@moonlight> In-Reply-To: <1096906618.695.7.camel@moonlight> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable X-mail-scanned: by DeepCore Virus & Spam killer v1.4 cc: freebsd-current@freebsd.org Subject: Re: nearly-lockup at boot with DMA enabled on DVD-drive 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: Tue, 05 Oct 2004 16:20:25 -0000 Roman Kennke wrote: > Hi list, >=20 > I am trying out the very latest BETA7 on my Fujitsu Amilo A laptop. I a= m > experiencing problems with DMA on my DVD drive. I remember that with > 5.2.1 and IMO also with BETA4 the DVD drive acd0 was set to PIO4. That > was ok, because DMA would not work properly when forced (although DMA i= s > supported by the DVD drive and the motherbord). > Now with BETA7 (and BETA6 which I tried before) the drive is set to > DMA33, which apparently does not work ok. This leads to an extremely > long pause at boot time. I first thought this will lock up, but after > several (5-7!) minutes, the boot proceeds (with the DVD drive not > working :-( ). When I manually disable DMA in loader.conf everything is= > ok. I would really like to have DMA working (good solution) OR detected= > as PIO4 (bad solution) in FreeBSD-stable. Well, it was decided to use DMA as default when the drive says it can at = least UDMA33, so thats why it changed. Now as to why ATAPI DMA doesn't work for you I have no easy answer, it=20 can be chipset, device firmware, ATA driver or any combination of those. = Did it ever work in DMA mode under FreeBSD ? The Acer chip should be DMA capable but we might need to twiddle a few=20 config bits to make it work, I'll look at it when I get the time, if too = long passes please ping me again ... -S=F8ren