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cdrecord always corrupting CDs



Hi,
It's been a month or so and everytime I burn a CD on my laptop, the process ends abrubtly. I end up throwing the CD away and burning on another machine. This CD writer has always worked just fine with Linux and with this FC6 installation specifically. I am attaching k3b's log file. Is this a known bug ?

Best Regards

System
-----------------------
K3b Version: 0.12.17

KDE Version: 3.5.6-0.3.fc6 Fedora-Core
QT Version:  3.3.7
Kernel:      2.6.20-1.2948.fc6
Devices
-----------------------
MATSHITA DVD-RAM UJ-841S 1.50 (/dev/hdc, ) at  [CD-R; CD-RW; CD-ROM; DVD-ROM; DVD-RAM; DVD-R; DVD-RW; DVD-R DL; DVD+R; DVD+RW; DVD+R DL] [DVD-ROM; DVD-R Sequential; DVD-R Dual Layer Sequential; DVD-RAM; DVD-RW Restricted Overwrite; DVD-RW Sequential; DVD+RW; DVD+R; DVD+R Double Layer; CD-ROM; CD-R; CD-RW] [SAO; TAO; Restricted Overwrite]

Used versions
-----------------------
cdrecord: 2.1

cdrecord
-----------------------
scsidev: '/dev/hdc'
devname: '/dev/hdc'
scsibus: -2 target: -2 lun: -2
Linux sg driver version: 3.5.27
/usr/bin/cdrecord: Warning: using inofficial libscg transport code version (schily - Red Hat-scsi-linux-sg.c-1.83-RH '@(#)scsi-linux-sg.c 1.83 04/05/20 Copyright 1997 J. Schilling').
SCSI buffer size: 64512
Cdrecord-Clone 2.01 (cpu-pc-linux-gnu) Copyright (C) 1995-2004 Jörg Schilling
Note: This version is an unofficial (modified) version with DVD support
Note: and therefore may have bugs that are not present in the original.
Note: Please send bug reports or support requests to http://bugzilla.redhat.com/bugzilla
Note: The author of cdrecord should not be bothered with problems in this version.
TOC Type: 1 = CD-ROM
Using libscg version 'schily-0.8'.
Driveropts: 'burnfree'
atapi: 1
Device type    : Removable CD-ROM
Version        : 0
Response Format: 2
Capabilities   : 
Vendor_info    : 'MATSHITA'
Identifikation : 'DVD-RAM UJ-841S '
Revision       : '1.50'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Current: 0x0009
Profile: 0x0012 
Profile: 0x002B 
Profile: 0x001B 
Profile: 0x001A 
Profile: 0x0015 
Profile: 0x0013 
Profile: 0x0014 
Profile: 0x0011 
Profile: 0x0010 
Profile: 0x000A 
Profile: 0x0009 (current)
Profile: 0x0008 
Profile: 0x0002 
Using generic SCSI-3/mmc   CD-R/CD-RW driver (mmc_cdr).
Driver flags   : MMC-3 SWABAUDIO BURNFREE 
Supported modes: TAO PACKET SAO
Drive buf size : 1310720 = 1280 KB
FIFO size      : 4194304 = 4096 KB
Track 01: data   180 MB        
Total size:      207 MB (20:34.81) = 92611 sectors
Lout start:      208 MB (20:36/61) = 92611 sectors
Current Secsize: 2048
ATIP info from disk:
  Indicated writing power: 5
  Is not unrestricted
  Is not erasable
  Disk sub type: Medium Type B, low Beta category (B-) (4)
  ATIP start of lead in:  -11607 (97:27/18)
  ATIP start of lead out: 359849 (79:59/74)
Disk type:    Short strategy type (Phthalocyanine or similar)
Manuf. index: 18
Manufacturer: Plasmon Data systems Ltd.
Blocks total: 359849 Blocks current: 359849 Blocks remaining: 267238
Starting to write CD/DVD at speed 24 in real SAO mode for single session.
Last chance to quit, starting real write in 2 seconds.
   1 seconds.
   0 seconds. Operation starts.
Waiting for reader process to fill input buffer ... input buffer ready.
trackno=0
BURN-Free is OFF.
Turning BURN-Free on
Performing OPC...
Sending CUE sheet...
/usr/bin/cdrecord: WARNING: Drive returns wrong startsec (0) using -150
Writing pregap for track 1 at -150
Starting new track at sector: 0
Track 01:    0 of  180 MB written.
Track 01:    1 of  180 MB written (fifo 100%) [buf 100%]   8.1x.
Track 01:    2 of  180 MB written (fifo 100%) [buf  99%]   8.2x.
Track 01:    3 of  180 MB written (fifo 100%) [buf  99%]   8.5x.
Track 01:    4 of  180 MB written (fifo 100%) [buf  99%]   8.2x.
Track 01:    5 of  180 MB written (fifo 100%) [buf  99%]   8.5x.
Track 01:    6 of  180 MB written (fifo 100%) [buf  99%]   8.2x.
Track 01:    7 of  180 MB written (fifo 100%) [buf  99%]   8.5x.
Track 01:    8 of  180 MB written (fifo 100%) [buf  99%]   8.2x.
Track 01:    9 of  180 MB written (fifo 100%) [buf  99%]   8.4x.
Track 01:   10 of  180 MB written (fifo 100%) [buf  99%]   8.2x.
Track 01:   11 of  180 MB written (fifo 100%) [buf  99%]   8.4x.
Track 01:   12 of  180 MB written (fifo 100%) [buf  99%]   8.2x.
Track 01:   13 of  180 MB written (fifo 100%) [buf  99%]   8.4x.
Track 01:   14 of  180 MB written (fifo 100%) [buf  98%]   8.1x.
Track 01:   15 of  180 MB written (fifo 100%) [buf  98%]   8.4x.
Track 01:   16 of  180 MB written (fifo 100%) [buf  98%]   8.1x.
Track 01:   17 of  180 MB written (fifo 100%) [buf  98%]   8.4x.
Track 01:   18 of  180 MB written (fifo 100%) [buf  98%]   8.1x.
Track 01:   19 of  180 MB written (fifo 100%) [buf  98%]   8.4x.
Track 01:   20 of  180 MB written (fifo 100%) [buf  98%]   8.1x.
Track 01:   21 of  180 MB written (fifo 100%) [buf  98%]   8.4x.
Track 01:   22 of  180 MB written (fifo 100%) [buf  98%]   8.1x.
Track 01:   23 of  180 MB written (fifo 100%) [buf  98%]   8.3x.
Track 01:   24 of  180 MB written (fifo 100%) [buf  98%]   8.1x.
Track 01:   25 of  180 MB written (fifo 100%) [buf  98%]   8.3x.
Track 01:   26 of  180 MB written (fifo 100%) [buf  97%]   8.1x.
Track 01:   27 of  180 MB written (fifo 100%) [buf  97%]   8.3x.
Track 01:   28 of  180 MB written (fifo 100%) [buf  97%]   8.0x.
Track 01:   29 of  180 MB written (fifo 100%) [buf  97%]   8.3x.
Track 01:   30 of  180 MB written (fifo 100%) [buf  97%]   8.0x.
Track 01:   31 of  180 MB written (fifo 100%) [buf  97%]   8.3x.
Track 01:   32 of  180 MB written (fifo 100%) [buf 100%]   8.1x.
Track 01:   33 of  180 MB written (fifo 100%) [buf  99%]   8.2x.
Track 01:   34 of  180 MB written (fifo 100%) [buf  99%]   8.5x.
Track 01:   35 of  180 MB written (fifo 100%) [buf  99%]   8.2x.
Track 01:   36 of  180 MB written (fifo 100%) [buf  99%]   8.5x.
/usr/bin/cdrecord: Success. write_g1: scsi sendcmd: no error
CDB:  2A 00 00 00 49 DE 00 00 1F 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: F1 00 03 00 00 47 7C 0A 00 2B 00 00 0C 00 00 00
Sense Key: 0x3 Medium Error, deferred error, Segment 0
Sense Code: 0x0C Qual 0x00 (write error) Fru 0x0
Sense flags: Blk 18300 (valid) 
resid: 2048
cmd finished after 5.155s timeout 200s
/usr/bin/cdrecord: A write error occured.
/usr/bin/cdrecord: Please properly read the error message above.
write track data: error after 38727680 bytes
Writing  time:   65.046s
Average write speed  20.5x.
Min drive buffer fill was 97%
Fixating...
Fixating time:    0.001s
/usr/bin/cdrecord: fifo had 674 puts and 611 gets.
/usr/bin/cdrecord: fifo was 0 times empty and 610 times full, min fill was 98%.
BURN-Free was never needed.

cdrecord command:
-----------------------
/usr/bin/cdrecord -v gracetime=2 dev=/dev/hdc speed=24 -dao driveropts=burnfree -eject -data /home/ahmed/Desktop/RHCEexam/5.0-3.0.3/rhcx-rhel-5.0.0-20070410.iso 


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