[Bug 12104] K3b starts writing CD but exits with error
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Sat Jul 23 11:42:39 UTC 2005
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Ubuntu | cdrecord
------- Additional Comments From chandra at ee.uwa.edu.au 2005-07-23 12:42 UTC -------
(In reply to comment #4)
> I'm just interested if you can recreate this bug.
Yes, I can. I just made another CD coaster :-(
>
> What it looks like from the output is that it's a buffer underrun, which means
> that your hardware isnt recieveing information as fast as it can write it. If
> you had lots of programs open while writing the CD, or if you had a processor
> intensive task running. Or you have hardware which isnt capable of running that
> speed CD writer, then I'd close the bug, but if that's not the case and you can
> regularly recreate this error, then It'd need more investigation
1. I had no processor-intensive tasks running. No specific user
applications; not even Firefox and Thunderbird. I only had KDE, the
KDE panel, and two consoles running. I can send a PNG of what I got with
"top" just before I invoked CD. [BTW, how do I attach PNGs to this bug
site?]
2. The CD writer had its maximum write speed of 48X enabled.
3. The CD was a 48X Verbatim super azo DataLifePlus CD-R.
4. AFAIK, both writer and Cd were capable of 48X writing; K3b mode for
write speed was "auto".
5. I was copying 488 MBytes of data when the process slowed down after
51 MBytes.
6. The speed shown during the write process was about 20X to 21X.
7. After a while, the CD was ejected with a failure.
8. The bug report is copied below:
Devices
-----------------------
LITEON DVD-ROM LTD-165H CH0J (/dev/hdd, ) at /media/cdrom1 [CD-ROM;
DVD-ROM] [DVD-ROM; CD-ROM] [None]
LITE-ON LTR-48125W VS06 (/dev/hdc, ) at /media/cdrom0 [CD-R; CD-RW;
CD-ROM] [CD-ROM; CD-R; CD-RW] [SAO; TAO; RAW; SAO/R16; RAW/R96P;
RAW/R96R]
System
-----------------------
K3b Version: 0.11.23
KDE Version: 3.4.1
QT Version: 3.3.3
Kernel: 2.6.10-5-686
cdrecord
-----------------------
/usr/bin/cdrecord: Warning: Running on Linux-2.6.10-5-686
/usr/bin/cdrecord: There are unsettled issues with Linux-2.5 and newer.
/usr/bin/cdrecord: If you have unexpected problems, please try Linux-2.4
or Solaris.
/usr/bin/cdrecord: Operation not permitted. WARNING: Cannot set
RR-scheduler
/usr/bin/cdrecord: Permission denied. WARNING: Cannot set priority using
setpriority().
/usr/bin/cdrecord: WARNING: This causes a high risk for buffer
underruns.
scsidev: '/dev/hdc'
devname: '/dev/hdc'
scsibus: -2 target: -2 lun: -2
Warning: Open by 'devname' is unintentional and not supported.
Linux sg driver version: 3.5.27
/usr/bin/cdrecord: Warning: using unofficial version of libscg
(ubuntu-0.8ubuntu1 '@(#)scsitransp.c 1.91 04/06/17 Copyright
1988,1995,2000-2004 J. Schilling').
SCSI buffer size: 64512
Cdrecord-Clone 2.01a38 (i686-pc-linux-gnu) Copyright (C) 1995-2004 Joerg
Schilling
NOTE: this version of cdrecord is an unofficial (modified) release of
cdrecord
and thus may have bugs that are not present in the original
version.
Please send bug reports and support requests to
<cdrtools at packages.debian.org>.
The original author should not be bothered with problems of this
version.
TOC Type: 1 = CD-ROM
Using libscg version 'ubuntu-0.8ubuntu1'.
Driveropts: 'burnfree'
atapi: 1
Device type : Removable CD-ROM
Version : 0
Response Format: 2
Capabilities :
Vendor_info : 'LITE-ON '
Identifikation : 'LTR-48125W '
Revision : 'VS06'
Device seems to be: Generic mmc CD-RW.
Current: 0x0009
Profile: 0x000A
Profile: 0x0009 (current)
Profile: 0x0008
Profile: 0x0002 (current)
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 : 1422080 = 1388 KB
FIFO size : 4194304 = 4096 KB
/usr/bin/cdrecord: Operation not permitted. WARNING: Cannot set
RR-scheduler
/usr/bin/cdrecord: Permission denied. WARNING: Cannot set priority using
setpriority().
/usr/bin/cdrecord: WARNING: This causes a high risk for buffer
underruns.
Track 01: data 488 MB
Total size: 561 MB (55:35.61) = 250171 sectors
Lout start: 561 MB (55:37/46) = 250171 sectors
Current Secsize: 2048
ATIP info from disk:
Indicated writing power: 4
Is not unrestricted
Is not erasable
Disk sub type: Medium Type A, high Beta category (A+) (3)
ATIP start of lead in: -11077 (97:34/23)
ATIP start of lead out: 359848 (79:59/73)
Disk type: Long strategy type (Cyanine, AZO or similar)
Manuf. index: 11
Manufacturer: Mitsubishi Chemical Corporation
Blocks total: 359848 Blocks current: 359848 Blocks remaining: 109677
Forcespeed is OFF.
Starting to write CD/DVD at speed 48 in real TAO 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.
BURN-Free is OFF.
Turning BURN-Free on
Performing OPC...
Starting new track at sector: 0
Track 01: 0 of 488 MB written.
Track 01: 1 of 488 MB written (fifo 100%) [buf 93%] 2.1x.
Track 01: 2 of 488 MB written (fifo 100%) [buf 89%] 20.7x.
Track 01: 3 of 488 MB written (fifo 98%) [buf 88%] 22.1x.
Track 01: 4 of 488 MB written (fifo 100%) [buf 84%] 21.1x.
Track 01: 5 of 488 MB written (fifo 100%) [buf 82%] 22.1x.
Track 01: 6 of 488 MB written (fifo 98%) [buf 79%] 21.2x.
Track 01: 7 of 488 MB written (fifo 100%) [buf 75%] 21.7x.
Track 01: 8 of 488 MB written (fifo 98%) [buf 71%] 21.3x.
Track 01: 9 of 488 MB written (fifo 100%) [buf 66%] 21.4x.
Track 01: 10 of 488 MB written (fifo 100%) [buf 62%] 21.2x.
Track 01: 11 of 488 MB written (fifo 100%) [buf 57%] 21.8x.
Track 01: 12 of 488 MB written (fifo 100%) [buf 53%] 21.2x.
Track 01: 13 of 488 MB written (fifo 100%) [buf 49%] 22.0x.
Track 01: 14 of 488 MB written (fifo 100%) [buf 43%] 21.1x.
Track 01: 15 of 488 MB written (fifo 98%) [buf 38%] 21.8x.
Track 01: 16 of 488 MB written (fifo 100%) [buf 29%] 20.4x.
Track 01: 17 of 488 MB written (fifo 98%) [buf 23%] 21.7x.
Track 01: 18 of 488 MB written (fifo 100%) [buf 15%] 20.9x.
Track 01: 19 of 488 MB written (fifo 100%) [buf 66%] 21.6x.
Track 01: 20 of 488 MB written (fifo 98%) [buf 90%] 9.6x.
Track 01: 21 of 488 MB written (fifo 98%) [buf 82%] 21.4x.
Track 01: 22 of 488 MB written (fifo 100%) [buf 74%] 20.8x.
Track 01: 23 of 488 MB written (fifo 98%) [buf 66%] 21.6x.
Track 01: 24 of 488 MB written (fifo 98%) [buf 57%] 20.7x.
Track 01: 25 of 488 MB written (fifo 100%) [buf 48%] 21.2x.
Track 01: 26 of 488 MB written (fifo 98%) [buf 37%] 20.5x.
Track 01: 27 of 488 MB written (fifo 100%) [buf 27%] 21.2x.
Track 01: 28 of 488 MB written (fifo 100%) [buf 18%] 20.9x.
Track 01: 29 of 488 MB written (fifo 100%) [buf 61%] 21.5x.
Track 01: 30 of 488 MB written (fifo 98%) [buf 89%] 9.3x.
Track 01: 31 of 488 MB written (fifo 100%) [buf 77%] 21.0x.
Track 01: 32 of 488 MB written (fifo 100%) [buf 68%] 20.9x.
Track 01: 33 of 488 MB written (fifo 98%) [buf 57%] 21.4x.
Track 01: 34 of 488 MB written (fifo 98%) [buf 46%] 21.7x.
Track 01: 35 of 488 MB written (fifo 100%) [buf 35%] 21.3x.
Track 01: 36 of 488 MB written (fifo 100%) [buf 21%] 21.3x.
Track 01: 37 of 488 MB written (fifo 100%) [buf 44%] 21.3x.
Track 01: 38 of 488 MB written (fifo 98%) [buf 89%] 9.6x.
Track 01: 39 of 488 MB written (fifo 100%) [buf 76%] 21.0x.
Track 01: 40 of 488 MB written (fifo 100%) [buf 65%] 22.0x.
Track 01: 41 of 488 MB written (fifo 98%) [buf 52%] 21.1x.
Track 01: 42 of 488 MB written (fifo 100%) [buf 37%] 21.4x.
Track 01: 43 of 488 MB written (fifo 98%) [buf 25%] 21.3x.
Track 01: 44 of 488 MB written (fifo 100%) [buf 23%] 21.5x.
Track 01: 45 of 488 MB written (fifo 98%) [buf 92%] 1.1x.
Track 01: 46 of 488 MB written (fifo 100%) [buf 77%] 21.4x.
Track 01: 47 of 488 MB written (fifo 100%) [buf 62%] 21.0x.
Track 01: 48 of 488 MB written (fifo 100%) [buf 49%] 21.9x.
Track 01: 49 of 488 MB written (fifo 98%) [buf 35%] 21.2x.
Track 01: 50 of 488 MB written (fifo 100%) [buf 19%] 21.4x.
Track 01: 51 of 488 MB written (fifo 98%) [buf 66%] 21.1x.
/usr/bin/cdrecord: Success. write_g1: scsi sendcmd: no error
CDB: 2A 00 00 00 66 CF 00 00 1F 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: 70 00 03 00 00 00 00 0A 00 00 00 00 0C 00 00 00
Sense Key: 0x3 Medium Error, Segment 0
Sense Code: 0x0C Qual 0x00 (write error) Fru 0x0
Sense flags: Blk 0 (not valid)
resid: 63488
cmd finished after 41.317s timeout 40s
/usr/bin/cdrecord: A write error occured.
/usr/bin/cdrecord: Please properly read the error message above.
write track data: error after 53901312 bytes
Writing time: 85.836s
Average write speed 43.2x.
Min drive buffer fill was 15%
Fixating...
Fixating time: 37.885s
/usr/bin/cdrecord: fifo had 913 puts and 850 gets.
/usr/bin/cdrecord: fifo was 0 times empty and 513 times full, min fill
was 96%.
BURN-Free was never needed.
cdrecord comand:
-----------------------
/usr/bin/cdrecord.mmap -v gracetime=2 dev=/dev/hdc speed=48 -tao
driveropts=burnfree -eject -data /tmp/kde-chandra/k3b_0.iso
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