Greetings everybody!

I want to use a new external Sony DRU-700A DVD writer to burn files from my HDD on DVD. It's connected on USB, and I have XCdRoast with cdrecord-ProDVD installed. The drive got detected, I can mount it on /dev/scd0, I have made /dev/sg0 and set the correct permissions.

The empty DVD medium gets detected, I select the directory to burn, and all looks well as soon as the burning process starts. There is a pause of about 10 seconds, and then it begins to burn with a displayed speed of 4x, and the progress bar goes up to about 1%. The it freezes again for a while, about 10 or 15 seconds, the speed display shoots to about 70x for a second, freezes, and it shows the following:

======================

Calling: /usr/local/lib/xcdroast-0.98/bin/xcdrwrap CDRECORDPRODVD dev= "1,0,0" gracetime=10 fs=4096k -v driveropts=burnfree,forcespeed speed=31 -dao -dummy -eject -pad -overburn -ignsize -waiti tsize=1648833s -

scsidev: '1,0,0'
scsibus: 1 target: 0 lun: 0
Linux sg driver version: 3.5.30
SCSI buffer size: 64512
Cdrecord-ProDVD-Clone 2.01b31 (i686-pc-linux-gnu) Copyright (C) 1995-2004 Jörg Schilling
Unlocked features: ProDVD Clone
Limited features:
This copy of cdrecord is licensed for: private/research/educational_non-commercial_use
TOC Type: 1 = CD-ROM
Waiting for data on stdin...
Using libscg version 'schily-0.8'.
Driveropts: 'burnfree,forcespeed'
atapi: 1
Device type : Removable CD-ROM
Version : 2
Response Format: 2
Capabilities :
Vendor_info : 'SONY '
Identifikation : 'DVD RW DRU-700A '
Revision : 'VY04'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Current: DVD-R sequential recording
Profile: Unknown
Profile: DVD+R
Profile: DVD+RW
Profile: DVD-RW sequential overwrite
Profile: DVD-RW restricted overwrite
Profile: DVD-R sequential recording (current)
Profile: DVD-ROM
Profile: CD-RW
Profile: CD-R
Profile: CD-ROM
Using generic SCSI-3/mmc-2 DVD-R/DVD-RW driver (mmc_dvd).
Driver flags : DVD MMC-3 SWABAUDIO BURNFREE FORCESPEED
Supported modes: PACKET SAO
Drive buf size : 1563904 = 1527 KB
FIFO size : 4194304 = 4096 KB
Track 01: data 3220 MB padsize: 30 KB
cdrecord.prodvd: Cannot get CD capabilities data. <- Meh?
Total size: 3220 MB = 1648848 sectors
Current Secsize: 2048
Blocks total: 2298496 Blocks current: 2298496 Blocks remaining: 649648
Forcespeed is ON.
Starting to write CD/DVD at speed 4 in dummy SAO mode for single session.

Waiting for reader process to fill input buffer ...
input buffer ready.
BURN-Free is ON.
Starting new track at sector: 0

cdrecord.prodvd: Input/output error. write_g1: scsi sendcmd: cmd timeout after 6.017 (100) s
CDB: 2A 00 00 00 01 74 00 00 1F 00
cmd finished after 6.017s timeout 100s
cdrecord.prodvd: A write error occured.
cdrecord.prodvd: Please properly read the error message above.
write track data: error after 761856 bytes

Writing time: 33.664s
Average write speed 72.5x.
Fixating...
Fixating time: 0.386s
BURN-Free was not used.
cdrecord.prodvd: fifo had 76 puts and 13 gets.
cdrecord.prodvd: fifo was 0 times empty and 8 times full, min fill was 96%.
======================

There is no problem under WinXP, and I can mount DVDs without problems in Linux with it.

Kernel: 2.6.6, scsi, ide-scsi, usb-storage, uhci-hcd, ehci-hcd, sr_mod, sg
XcdRoast 0.98Alpha15
cdrecord 2.00.3 and later 2.01a35
cdrecord-ProDVD-clone 2.01b31

On a note: The drive is connected to an PCI Usb2.0 card.

Thanks for your help in advance,

Ambrosia

Edit:

Here are two parts from my dmesg that might also clear up some questions beforehand:

ehci_hcd 0000:00:11.3: ALi Corporation USB 2.0 Controller
ehci_hcd 0000:00:11.3: irq 10, pci mem f8923000
ehci_hcd 0000:00:11.3: new USB bus registered, assigned bus number 3
ehci_hcd 0000:00:11.3: USB 2.0 enabled, EHCI 1.00, driver 2003-Dec-29

usb 3-6: new high speed USB device using address 3
scsi0 : SCSI emulation for USB Mass Storage devices
Vendor: SONY Model: DVD RW DRU-700A Rev: VY04
Type: CD-ROM ANSI SCSI revision: 02

Heh..late attendum, but it seems like it was a hardware error...the thing died a few days later by not getting recognized anymore, at all, no matter what OS. Gave it back, and got a new internal which works wonderfully.
Wraps that case up

Ambrosia - thanks for posting back with the update. If no one has said it before, Welcome to LQ -- J.W.