Messages in this thread | | | Date | Mon, 10 Jan 2000 11:22:48 +0100 (MET) | From | Bjorn Wesen <> | Subject | Re: how to set DVD read speed for Pioneer DVD-303S ? |
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FWIW, I have the IDE version of that drive (or similar) I think its the DVD-304 or something. And SELECT_SPEED does not work on it. It works fine on the CDROM players I have, but not that one. It might be related to the SCSI version, maybe the drive itself ignores it ?
I wanted to set the drive to the slowest speed so it does not sound like a Harrier Jumpjet when I play MP3's. But no luck..
(This was on Linux 2.0)
-Bjorn
On Mon, 10 Jan 2000, Jens Axboe wrote:
> On Sun, Jan 09 2000, Harald Koenig wrote: > > in the mean time I got some 3 more DVD (video) disks, and those discs > > I can read with higher transfer rates! > > > > the two DVD9 discs (two layers, signle side) read up to 5.4 MB/sec (4x) > > while the DVD5 disc (sigle layer, single side) went up to 6.85 MB/sec (5x). > > Nothing we can do about that, then. I suspect that this is usual, > though I've never benched my DVD drives. > > > "drive speed" is always reported being 0 (zero). but looking at the > > code in scsi/sr.c get_capabilities() only gets called once at boot time > > Pioneer does this. The capabilities page (where we read the speed) > is deprecated, but most drive still report it. > > > code in scsi/sr.c get_capabilities() only gets called once at boot time > > from sr_finish(), so it's no big surprise that the value > > in /proc/sys/dev/cdrom/info doesn't change... > > sr_select_speed should set that, I'll fix it up. > > -- > * Jens Axboe <axboe@image.dk> > * Linux CD-ROM Maintainer > * http://www.kernel.dk
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