108 lines
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108 lines
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From rpm-list-admin@freshrpms.net Wed Oct 9 10:51:41 2002
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<rpm-list@freshrpms.net>; Tue, 8 Oct 2002 23:17:09 -0400
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Subject: Re: RH 8 no DMA for DVD drive
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From: Chris Kloiber <ckloiber@ckloiber.com>
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To: rpm-zzzlist@freshrpms.net
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Date: 08 Oct 2002 23:17:17 -0400
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On Mon, 2002-10-07 at 13:28, Matthias Saou wrote:
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> I've never heard of any CD-ROM or DVD-ROM drive having problems with DMA...
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> although there probably is since Red Hat decided to default disabling it a
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> few releases back :-/
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Heh. I get to see bad CDROM problems all the time. Mostly when vendors
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buy crap cables to try to save $0.02/each, but there are chipsets and
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drives with known DMA issues as well.
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> Normally, even if you try to enable DMA and your device doesn't support it,
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> it simply don't be able to make the change, and that's it. The problem IIRC
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> is with crappy hardware that is supposed to support DMA but doesn't work as
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> expected when it's enabled... maybe Chris could confirm this? ;-)
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Usually if you enable DMA on a CDROM that can't handle it gracefully you
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won't be able to read data off it relably, and that's about it. No
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end_of_the_world problems, and easily fixed.
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> I guess I'll settle for the /dev/dvd link change as described and putting
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> the DMA tip in the %description :-)
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My biggest beef with automatically setting /dev/dvd is that I always
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seem to have a CD-Burner and a DVD drive (or DVD burner) in the same
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box, and I usually have the DVD as the second drive /dev/cdrom1 in
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"kudzu-speak". I agree that the %description is the best place for the
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tip. Unless someone can come up with a way to probe CD/DVD drives to
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divulge their largest supported media size without loading ide-scsi or
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having that media currently in the drive.
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--
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Chris Kloiber
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_______________________________________________
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RPM-List mailing list <RPM-List@freshrpms.net>
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http://lists.freshrpms.net/mailman/listinfo/rpm-list
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