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2004 Aug 11 11:06

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Re: [vox-tech] DVD issues
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Re: [vox-tech] DVD issues

The DMA enablability depends on the IDE controller, not the DVD drive.  So
if your motherboard is old, even new DVD players won't work in DMA mode.


On Wed, 11 Aug 2004, dylan wrote:

> Hi everyone,
> I was recently messing about with DVD playback on linux, and was less than
> impressed with the quality- i.e. playback was at about 75% speed. after some
> googling i came to the conclusion that I had 2 options: 1 get a better video
> card  or 2, fix the DMA settings on the drive with hdparm... (the xv
> extension to X11 was already installed)
> the initial output from hdparm was as follows:
> linux:/var/log # hdparm /dev/dvd
> ---------------------
> /dev/dvd:
>  HDIO_GET_MULTCOUNT failed: Invalid argument
>  IO_support   =  0 (default 16-bit)
>  unmaskirq    =  0 (off)
>  using_dma    =  0 (off)
>  keepsettings =  0 (off)
>  readonly     =  1 (on)
>  readahead    = 256 (on)
>  HDIO_GETGEO failed: Invalid argument
> ---------------------
> i tried a couple of combinations of turning on DMA, as well as toggling the
> other settings. Any setting other than the default lead to a non-functioning
> DVD drive, and the following lines in /var/log/messages:
> ---------------------
> Aug 10 22:40:00 linux kernel: hdd: drive_cmd: status=0x51 { DriveReady
> SeekComplete Error }
> Aug 10 22:40:00 linux kernel: hdd: drive_cmd: error=0x04Aborted Command
> ---------------------
> I have ordered a new video card for this machine, as the integrated video is
> awful. perhaps this will solve my problems. however, is it normal for a
> modern DVD drive like this one refuse to accept DMA transfers?
> any ideas?
> thanks in advance!
> Dylan
> _______________________________________________
> vox-tech mailing list
> vox-tech@lists.lugod.org
> http://lists.lugod.org/mailman/listinfo/vox-tech

Mark K. Kim
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