[MPlayer-users] problems playing back most dvd's
Charles Blackburn
charlesb at summerfield-technology.co.uk
Fri Apr 18 15:14:57 CEST 2003
So it looks like it's using dma but how can i make sure that it is?
---
charles
thunder root # hdparm -iI /dev/hdc
/dev/hdc:
Model=HITACHI DVD-ROM GD-2500, FwRev=0101, SerialNo=
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 *mdma2
AdvancedPM=no
ATAPI CD-ROM, with removable media
Model Number: HITACHI DVD-ROM GD-2500
Serial Number:
Firmware Revision: 0101
Standards:
Likely used CD-ROM ATAPI-1
Configuration:
DRQ response: 50us.
Packet size: 12 bytes
Capabilities:
LBA, IORDY(can be disabled)
DMA: sdma0 sdma1 sdma2 mdma0 mdma1 *mdma2
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
On Fri, 18 Apr 2003 15:40:31 +0400 (MSD)
Vladimir Mosgalin <mosgalin at VM10124.spb.edu> wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read
> DOCS/bugreports.html] On Fri, 18 Apr 2003, Charles Blackburn wrote:
>
> CB>thunder root # hdparm /dev/hdc
>
> You should check hdparm -iI /dev/hdc as well, -d1 just _allows_ to set
> dma, maybe your drive is still in pio mode...
>
> If everything is correct, you will see something like
> 'UDMA modes: udma0 udma1 *udma2'. After that you can get raw read
> speed using hdparm -t /dev/hdc. This won't be correct, however, e.g.
> for me it shows half of the real speed...
>
> --
>
> Vladimir
>
> _______________________________________________
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