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.
-Mark
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
>
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>
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Mark K. Kim
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