From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.43) id 1E2HQ9-00004Q-Hu for garchives@archives.gentoo.org; Mon, 08 Aug 2005 23:52:41 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.4/8.13.4) with SMTP id j78Np2hE031441; Mon, 8 Aug 2005 23:51:02 GMT Received: from sysconcept.ca (103.205-206-12-0.interbaun.com [205.206.12.103] (may be forged)) by robin.gentoo.org (8.13.4/8.13.4) with ESMTP id j78NkGft006536 for ; Mon, 8 Aug 2005 23:46:17 GMT Received: by sysconcept.ca (Postfix, from userid 1000) id B55682EB38A; Mon, 8 Aug 2005 17:47:05 -0600 (MDT) Subject: Re: [gentoo-user] setting "using_dma" on a BenQ DVD/RW drive From: Joseph To: gentoo-user@lists.gentoo.org In-Reply-To: <42F7E0D3.4010304@sonic.net> References: <1123517023.20641.4.camel@sysconcept.ca> <1123520963.20643.9.camel@sysconcept.ca> <42F79BE8.9060109@dir.bg> <42F7A38D.8090705@cisco.com> <42F7A998.7040100@dir.bg> <42F7B052.1050103@cisco.com> <20050808232648.0f90c1fa@hactar.digimed.co.uk> <42F7E0D3.4010304@sonic.net> Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Mon, 08 Aug 2005 17:47:05 -0600 Message-Id: <1123544825.20648.46.camel@sysconcept.ca> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@gentoo.org Reply-to: gentoo-user@lists.gentoo.org Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 X-Archives-Salt: 27651f69-6832-444b-b48a-7df95528c233 X-Archives-Hash: 713621a963ef9c06327460e053dd1f1e I'm starting to believe that it has something to do with some option in the kernel that is not enabled. I just swap the CD/RW Plextor from the machine that is working OK on kernel 2.6.11 (where DMA is enabled and everything is working, CD/RW, except eject - but that is another story) into a new New Machine on kernel-2.6.12 Anyhow, I just put the Plextor CD/RW into my new machine and the DMA was not not enabled: hdparm /dev/hdc for plextor on working machine. /dev/hdc: IO_support = 1 (32-bit) unmaskirq = 1 (on) using_dma = 1 (on) keepsettings = 0 (off) readonly = 0 (off) readahead = 256 (on) hdparm for plextor on new machine: /dev/hdd: IO_support = 0 (16-bit) unmaskirq = 0 (off) using_dma = 0 (off) keepsettings = 0 (off) readonly = 0 (off) readahead = 256 (on) So, I strongly believe it has to do with some setting in the kernel or diver. Another interesting thing is that lshw is not even listing CDROM present in a new machine for both drives: BenQ and Plextor, even though kernel detects them correctly. I did not put BenQ Writer into working machine, I'll try to analyze both kernel settings first, to see what I'm missing. -- #Joseph > > This makes it more likely that the problem is lack of support for your > > IDE chipset in your kernel. > > Joseph, > > Please post *ALL* of the output of a dmesg and lspci-v command. > I too believe chipset issues are most likely the problem. > > I am at present fighting a similar problem with a 915GM. > > -- > Regards, > Ray > > > -- gentoo-user@gentoo.org mailing list