[tlinux-users:07366] Re: no dma on teac DV-W28EAT

Hi Mario,

I don't have any idea about your particular issue, however, the 
following command will  provide even more information:

hdparm -vI /dev/hdc

so please post this information to the mailing list.

Also, you may check which configuration (DMA, mode, anything) has the 
DVD under windows.

Good luck!


Mario Fetka wrote:
> Hallo List,
> 
> I have a small problem with on my new M60-135 notebook
> I am not able to activate the dma mode on this teac DVD
> 
> the output of hdparm -d1 /dev/hdc
> 
> /dev/hdc:
>  setting using_dma to 1 (on)
>  HDIO_SET_DMA failed: Operation not permitted
>  using_dma    =  0 (off)
> 
> The crazy thing is that hdparm -i /dev/hdc
> 
> /dev/hdc:
> 
>  Model=DV-W28EAT, FwRev=1.9B, 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
>  UDMA modes: udma0 udma1 *udma2
>  AdvancedPM=no
>  Drive conforms to: device does not report version:
> 
>  * signifies the current active mode
> 
> allready says its activated
> 
> but xine-check
> 
> says it isnt
> 
> [ hint ] DMA is disabled for your DVD interface.
>          This will probably result in a serious performance hit when
>          playing DVDs. You can issue the command
>          hdparm -d1 /dev/hdc
>          as root to enable DMA. It would be wise to add this command to
>          some script that is executed executed at boot time.
>          Note that you probably have to set the DMA mode for your drive
> as well.
>          Most DVD-ROMs work fine with multiword DMA mode 2. You can use
>          hdparm -d1 -X34 /dev/hdc
>          (as root again) to set this mode. Maybe UDMA2 will give you
> even better
>          performance, but it only works well with some controllers.
> You'll
>          probably need UDMA capable IDE cables for this mode. If you
> want
>          to try: make backups of your important data and type (as root
> again)
>          sync
>          hdparm -d1 -X66 /dev/hdc
>          If your System still works fine after this, you probably want
> to keep
>          these settings (add them to some boot script).
>          If your system hangs or behaves very strangely after a few
> minutes, you
>          should reboot immediately and never use this setting again on
> this
>          machine. Good luck ;-)
>          press <enter> to continue...
> 
> 
> could someone plz help me (I want to watch my dvds without glitchs)
> 
> wfg
> thx in av
> 
> Mario Fetka
> 
> 
> 
> 

		
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