slow DVD ripping under Ubuntu/Intrepid

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FreeBSD, Linux Burning Discuss, slow DVD ripping under Ubuntu/Intrepid at Burning Software forum; Basically, I want to take a DVD movie and rip it to an ISO file. Code:

Old Posted: 10-04-2009
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graysky (New on Forum)
Posts: 4
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Basically, I want to take a DVD movie and rip it to an ISO file.

Code:
dd if=/dev/scd0 of=/home/user1/image.iso
557177+0 records in
557176+0 records out
285274112 bytes (285 MB) copied, 76.3168 s, 3.7 MB/s
For some reason is goes very slowly! I have also done a simple 'cat /dev/scd0 > image.iso' and it too is very slow. The DVDROM drive never spins up.

I can do this w/ DVD-Decrypter and WINE, but DVD Decrypter goes very slowly (1.7x-2.0x) too. I know it's not my hardware because this same machine booted into XP does this operation around 12-14x in DVD-Decrypter. Also, k3b is dog-slow writing an iso.

Any ideas why it's so slow?

It's not just DVD movies... I popped in my GTA 4 DVD (windows game). I did the same dd command and it too was written very slowly...

UDMA seems to be enabled and I'm out of ideas...

Code:
$ sudo hdparm -i /dev/scd0

/dev/scd0:

 Model=BENQ    DVD DD DW1640                   , FwRev=BSRB    , SerialNo=9JC5U150C353364133SP
 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=yes, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio1 pio2 pio3 pio4 
 DMA modes:  mdma0 mdma1 mdma2 
 UDMA modes: udma0 udma1 *udma2 
 AdvancedPM=no

 * signifies the current active mode
Thanks all!
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