Did you try a simple "eject" command, and/or to read CDs from it? SCSI
emulation wouldn't just "stop" working. Probably it is a hardware error.

On Sun, 22 Sep 2002 [EMAIL PROTECTED] wrote:

> Hi,
>
> I've been having a problem with my CDRW recently. Today is the second time it
> happened - last time was a few days ago, and the only way I could solve it was
> to reboot (after an uptime of over 4 months), after which everything worked
> fine. My guess is that there's something going wrong with the SCSI emulation,
> but I'm not sure since I can't figure out the error messages. And in any
> case, I couldn't find any way to reset the SCSI bus if I am right. I'm enclosing
> below error messages I get when I try to write, blank or eject a CDRW. The
> lights on the drive don't go on - nothing seems to happen. And after a few
> seconds I get these. As I wrote, rebooting solves the problem, but that's
> obviously not the way :-(
>
> TIA
>
>
> ====>>  trying to write a CDRW
>
> [root@shlomo1 root]# cdrecord -v dev=0,0,0 speed=8  /data2/mynewbackup.iso
> Cdrecord 1.10 (i586-mandrake-linux-gnu) Copyright (C) 1995-2001 J�rg Schilling
> TOC Type: 1 = CD-ROM
> scsidev: '0,0,0'
> scsibus: 0 target: 0 lun: 0
> Linux sg driver version: 3.1.20
> Using libscg version 'schily-0.5'
> atapi: 1
> Device type    : Removable CD-ROM
> Version        : 0
> Response Format: 1
> Vendor_info    : 'RICOH   '
> Identifikation : 'CD-R/RW MP7083A '
> Revision       : '1.20'
> Device seems to be: Generic mmc CD-RW.
> Using generic SCSI-3/mmc CD-R driver (mmc_cdr).
> Driver flags   : SWABAUDIO
> Drive buf size : 1343488 = 1312 KB
> FIFO size      : 4194304 = 4096 KB
> Track 01: data  636 MB
> Total size:     731 MB (72:25.41) = 325906 sectors
> Lout start:     731 MB (72:27/31) = 325906 sectors
> Current Secsize: 2048
> ATIP info from disk:
>   Indicated writing power: 5
>   Reference speed: 2
>   Is unrestricted
>   Is erasable
>   ATIP start of lead in:  -11635 (97:26/65)
>   ATIP start of lead out: 337350 (75:00/00)
>   speed low: 0 speed high: 4
>   power mult factor: 4 6
>   recommended erase/write power: 3
>   A2 values: 00 00 00
> Disk type:    Phase change
> Manuf. index: 3
> Manufacturer: CMC Magnetics Corporation
> Blocks total: 337350 Blocks current: 337350 Blocks remaining: 11444
> Starting to write CD/DVD at speed 4 in write 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...
> cdrecord: Input/output error. send opc: scsi sendcmd: no error
> CDB:  54 01 00 00 00 00 00 00 00 00
> status: 0x2 (CHECK CONDITION)
> Sense Bytes: 70 00 04 00 00 00 00 0C 00 00 00 00 91 AE 00 00
> Sense Key: 0x4 Hardware Error, Segment 0
> Sense Code: 0x91 Qual 0xAE (vendor unique sense code 0x91) [No matching
> qualifier] Fru 0x0
> Sense flags: Blk 0 (not valid)
> cmd finished after 18.329s timeout 60s
> cdrecord: Resource temporarily unavailable. OPC failed.
> cdrecord: fifo had 64 puts and 0 gets.
> cdrecord: fifo was 0 times empty and 0 times full, min fill was 100%.
> [root@shlomo1 root]#
>
>
>
> ===>>>  trying to blank
>
> [root@shlomo1 root]# cdrecord dev=0,0,0 blank=fast
> Cdrecord 1.10 (i586-mandrake-linux-gnu) Copyright (C) 1995-2001 J�rg Schilling
> scsidev: '0,0,0'
> scsibus: 0 target: 0 lun: 0
> Linux sg driver version: 3.1.20
> Using libscg version 'schily-0.5'
> Device type    : Removable CD-ROM
> Version        : 0
> Response Format: 1
> Vendor_info    : 'RICOH   '
> Identifikation : 'CD-R/RW MP7083A '
> Revision       : '1.20'
> Device seems to be: Generic CD-ROM.
> Using generic SCSI-3/mmc CD-R driver (mmc_cdr).
> Driver flags   : SWABAUDIO
> Starting to write CD/DVD at speed 2 in write mode for single session.
> Last chance to quit, starting real write in 0 seconds. Operation starts.
> cdrecord: Input/output error. blank unit: scsi sendcmd: no error
> CDB:  A1 01 00 00 00 00 00 00 00 00 00 00
> status: 0x2 (CHECK CONDITION)
> Sense Bytes: 70 00 04 00 00 00 00 0C 00 00 00 00 91 AE 00 00
> Sense Key: 0x4 Hardware Error, Segment 0
> Sense Code: 0x91 Qual 0xAE (vendor unique sense code 0x91) [No matching
> qualifier] Fru 0x0
> Sense flags: Blk 0 (not valid)
> cmd finished after 27.034s timeout 9600s
> cdrecord: Cannot blank disk, aborting.
> [root@shlomo1 root]#
>
>
> ===>>>  trying to eject
>
> [root@shlomo1 root]# cdrecord -eject dev=0,0,0
> Cdrecord 1.10 (i586-mandrake-linux-gnu) Copyright (C) 1995-2001 J�rg Schilling
> scsidev: '0,0,0'
> scsibus: 0 target: 0 lun: 0
> Linux sg driver version: 3.1.20
> Using libscg version 'schily-0.5'
> Device type    : Removable CD-ROM
> Version        : 0
> Response Format: 1
> Vendor_info    : 'RICOH   '
> Identifikation : 'CD-R/RW MP7083A '
> Revision       : '1.20'
> Device seems to be: Generic mmc CD-RW.
> Using generic SCSI-3/mmc CD-R driver (mmc_cdr).
> Driver flags   : SWABAUDIO
> cdrecord: Input/output error. prevent/allow medium removal: scsi sendcmd: no
> error
> CDB:  1E 00 00 00 00 00
> status: 0x2 (CHECK CONDITION)
> Sense Bytes: 70 00 05 00 00 00 00 0C 00 00 00 00 2C 00 00 00
> Sense Key: 0x5 Illegal Request, Segment 0
> Sense Code: 0x2C Qual 0x00 (command sequence error) Fru 0x0
> Sense flags: Blk 0 (not valid)
> cmd finished after 0.000s timeout 40s
> cdrecord: Input/output error. start/stop unit: scsi sendcmd: no error
> CDB:  1B 00 00 00 02 00
> status: 0x2 (CHECK CONDITION)
> Sense Bytes: 70 00 05 00 00 00 00 0C 00 00 00 00 2C 00 00 00
> Sense Key: 0x5 Illegal Request, Segment 0
> Sense Code: 0x2C Qual 0x00 (command sequence error) Fru 0x0
> Sense flags: Blk 0 (not valid)
> cmd finished after 0.000s timeout 40s
> [root@shlomo1 root]#
>
>
> //-------------------------
> Shlomo Solomon
> E-Mail: [EMAIL PROTECTED]
> http://come.to/shlomo.solomon
> Date: 22-Sep-2002   Time: 14:00:30
>
> Message sent by XFMail on a LINUX Mandrake 8.1 machine
> //-------------------------
>
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