[conspire] cd burning giving slight errors

Sun Nov 6 21:41:47 PST 2011

In the leading output from the burn wodim's output says it is defaulting
to track-at-once mode (-tao), instead of disk-at-once mode. Try
specifying "-dao" instead.

_S

On Sun, 2011-11-06 at 18:17 -0800, Peter Knaggs wrote:
> Hi All,
> 
> Both of the CD-burners on my machine are writing
> stuff which is slightly different to what I asked: a few
> bytes here and there have the wrong values after the
> burn (compared using "cmp -l"). There's no errors from
> the burning.
> 
> Any ideas what could cause this?
> The operating system is Ubuntu 11.04 (natty).
> I've written CDs on this machine before using k3b
> and they verified OK, and it seems strange that both
> burners would start to fail at the same time.
> 
> Thanks,
> Peter.
> 
> $ cat /etc/lsb-release
> DISTRIB_ID=Ubuntu
> DISTRIB_RELEASE=11.04
> DISTRIB_CODENAME=natty
> DISTRIB_DESCRIPTION="Ubuntu 11.04"
> 
> 
> $ uname -a
> Linux velocity 2.6.38-11-generic #50-Ubuntu SMP Mon Sep 12 21:17:25
> UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
> 
> 
> 
> $ wodim --devices
> wodim: Overview of accessible drives (2 found) :
> -------------------------------------------------------------------------
>  0  dev='/dev/scd0'     rwrw-- : 'ATAPI' 'iHAS222   8'
>  1  dev='/dev/scd1'     rwrw-- : 'ATAPI' 'DVD C  DH52C2S'
> -------------------------------------------------------------------------
> 
> 
> 
> $ wodim speed=1 -v dev=/dev/scd0 -data ubuntu-11.10-desktop-amd64.iso
> wodim: No write mode specified.
> wodim: Assuming -tao mode.
> wodim: Future versions of wodim may have different drive dependent defaults.
> TOC Type: 1 = CD-ROM
> scsidev: '/dev/scd0'
> devname: '/dev/scd0'
> scsibus: -2 target: -2 lun: -2
> Linux sg driver version: 3.5.27
> Wodim version: 1.1.11
> SCSI buffer size: 64512
> Device type    : Removable CD-ROM
> Version        : 5
> Response Format: 2
> Capabilities   :
> Vendor_info    : 'ATAPI   '
> Identification : 'iHAS222   8     '
> Revision       : '4L01'
> Device seems to be: Generic mmc2 DVD-R/DVD-RW.
> Current: 0x0009 (CD-R)
> Profile: 0x002B (DVD+R/DL)
> Profile: 0x001B (DVD+R)
> Profile: 0x001A (DVD+RW)
> Profile: 0x0016 (DVD-R/DL layer jump recording)
> Profile: 0x0015 (DVD-R/DL sequential recording)
> Profile: 0x0014 (DVD-RW sequential recording)
> Profile: 0x0013 (DVD-RW restricted overwrite)
> Profile: 0x0012 (DVD-RAM)
> Profile: 0x0011 (DVD-R sequential recording)
> Profile: 0x0010 (DVD-ROM)
> Profile: 0x000A (CD-RW)
> Profile: 0x0009 (CD-R) (current)
> Profile: 0x0008 (CD-ROM)
> Profile: 0x0002 (Removable disk)
> Using generic SCSI-3/mmc   CD-R/CD-RW driver (mmc_cdr).
> Driver flags   : MMC-3 SWABAUDIO BURNFREE FORCESPEED
> Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
> Drive buf size : 1867008 = 1823 KB
> Beginning DMA speed test. Set CDR_NODMATEST environment variable if device
> communication breaks or freezes immediately after that.
> FIFO size      : 12582912 = 12288 KB
> Track 01: data   697 MB
> Total size:      800 MB (79:20.21) = 357016 sectors
> Lout start:      801 MB (79:22/16) = 357016 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:  -12369 (97:17/06)
>   ATIP start of lead out: 359849 (79:59/74)
> Disk type:    Short strategy type (Phthalocyanine or similar)
> Manuf. index: 69
> Manufacturer: Moser Baer India Limited
> Manufacturer is guessed because of the orange forum embargo.
> The orange forum likes to get money for recent information.
> The information for this media may not be correct.
> Blocks total: 359849 Blocks current: 359849 Blocks remaining: 2833
> Forcespeed is OFF.
> Speed set to 1412 KB/s
> Starting to write CD/DVD at speed   8.0 in real TAO mode for single session.
> Last chance to quit, starting real write in    0 seconds. Operation starts.
> Waiting for reader process to fill input buffer ... input buffer ready.
> Performing OPC...
> Starting new track at sector: 0
> Track 01:  697 of  697 MB written (fifo 100%) [buf 100%]   8.4x.
> Track 01: Total bytes read/written: 731164672/731164672 (357014 sectors).
> Writing  time:  598.999s
> Average write speed   8.0x.
> Min drive buffer fill was 99%
> Fixating...
> Fixating time:   39.719s
> BURN-Free was never needed.
> wodim: fifo had 11517 puts and 11517 gets.
> wodim: fifo was 0 times empty and 11309 times full, min fill was 95%.
> 
> 
> 
> $ readom -v dev=/dev/scd0 f=./testing_read
> scsidev: '/dev/scd0'
> devname: '/dev/scd0'
> scsibus: -2 target: -2 lun: -2
> Linux sg driver version: 3.5.27
> Read  speed:  8468 kB/s (CD  48x, DVD  6x).
> Write speed:  8468 kB/s (CD  48x, DVD  6x).
> Capacity: 357014 Blocks = 714028 kBytes = 697 MBytes = 731 prMB
> Sectorsize: 2048 Bytes
> Copy from SCSI (2,0,0) disk to file './testing_read'
> end:    357014
> addr:   357014 cnt: 22
> Time total: 143.180sec
> Read 714028.00 kB at 4986.9 kB/sec.
> 
> 
> 
> $ cmp -l testing_read ubuntu-11.10-desktop-amd64.iso
>  14776952 271 371
>  15958776  66 276
> 126001912 251 241
> 139168502 330 230
> 201790448 131 130
> 253641728 173 373
> 365486456 133 337
> 417118968 350 353
> 464745462  34  30
> 479204336 376 176
> 479204352 250 210
> 491099128 125 124
> 493947640 342 362
> 542407664 104 100
> 554846840 222 220
> 629814256 340 140
> 664755200   6   2
> 682847216 150 170
> 682847224  42   2
> 714806272 216 217
> 
> 
> Or on a few other burns, the differences were:
> 
> $ cmp -l testing_read ubuntu-11.10-desktop-amd64.iso
>  18775032  20  21
>  99685366   6 106
> 227574784 233 223
> 270672878 374 375
> 270672894 360 160
> 305185784 321 361
> 321367032 247 267
> 337765360 143 141
> 569025518 165 127
> 569025534 257 256
> 603778048 366 367
> 651611120 222  22
> 652893166 312 352
> 722068480  67  66
> 
> 
> 
> $ cmp -l testing_read ubuntu-11.10-desktop-amd64.iso
>  80493560  12  13
>  89390064 312 310
> 140755952 350 310
> 149490672 165 365
> 220417022 322 326
> 230341632 336 332
> 234007157  71 171
> 260547568 131  31
> 263523326 360 362
> 284498552  67  66
> 369306616 372 312
> 381924350 211 201
> 465279984 230 220
> 518091760 360 363
> 519597056 207 205
> 525816832 263 267
> 526449016  54  55
> 530187248 154 174
> 591408112 354 314
> 629431288 374 370
> 649278448 276 256
> 686959614  70  54
> 698923640 160 162
> 698923768 132 112
> 706345968 114 134
> 
> $ cmp -l testing_read ubuntu-11.10-desktop-amd64.iso
>  44878830 253 257
>  44878846  16   6
>  44977134 272 372
>  46400510 104   4
>  82830069 343 345
>  91491320 112 102
> 101862382 142 140
> 101862398 141 143
> 178394096 130 110
> 201771640  73  71
> 233347704 260 270
> 241828848 361 161
> 241828864 363 367
> 249025144  41  51
> 293772272 121 321
> 293772280 310 350
> 300210808 171 371
> 313215608 170 150
> 313215736 130 134
> 329863928 353 351
> 331080312 342 343
> 372746872 173  73
> 495936248 167 163
> 546145272 306 317
> 570237941 220  20
> 593537656 151 351
> 703062776 216 236
> 724154998 121  21
> 724155126  14 214
> 
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