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SCSI errors in xmcd



I am running xmcd with a Yamaha CD writer connected to an Adaptec 2940UW
SCSI card.

About twice a second throughout playing a CD I get these errors in the
xterm from which I started xmcd:

CD audio: SCSI command error on /dev/cdrom:
Opcode=0x42 Status=0x1 Msg=0x0 Host=0x0 Driver=0x28
Key=0x5 Code=0x24 Qual=0x0

Can anyone say what the problem is?

These are details from /proc/scsi/scsi:

Host: scsi0 Channel: 00 Id: 01 Lun: 00
  Vendor: YAMAHA   Model: CRW4416S         Rev: 1.0e
  Type:   CD-ROM                           ANSI SCSI revision: 02

and from /proc/scsi/aic7xxx/0:

Adaptec AIC7xxx driver version: 5.1.10/3.2.4
Compile Options:
  AIC7XXX_RESET_DELAY    : 5
  AIC7XXX_TAGGED_QUEUEING: Adapter Support Enabled
                             Check below to see which
                             devices use tagged queueing
  AIC7XXX_PAGE_ENABLE    : Enabled (This is no longer an option)
  AIC7XXX_PROC_STATS     : Enabled

Adapter Configuration:
           SCSI Adapter: Adaptec AHA-294X Ultra SCSI host adapter
                           Ultra Wide Controller
    PCI MMAPed I/O Base: 0xffafb000
 Adapter SEEPROM Config: SEEPROM found and used.
      Adaptec SCSI BIOS: Enabled
                    IRQ: 10
                   SCBs: Active 0, Max Active 3,
                         Allocated 15, HW 16, Page 255
             Interrupts: 547004
      BIOS Control Word: 0x1896
   Adapter Control Word: 0x005b
   Extended Translation: Enabled
Disconnect Enable Flags: 0xffff
     Ultra Enable Flags: 0x0040
 Tag Queue Enable Flags: 0x0000
Ordered Queue Tag Flags: 0x0000
Default Tag Queue Depth: 24
    Tagged Queue By Device array for aic7xxx host instance 0:
      {255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255}
    Actual queue depth per device for aic7xxx host instance 0:
      {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}

Statistics:
...
(scsi0:0:1:0)
  Device using Narrow/Sync transfers at 4.4 MByte/sec, offset 15
  Transinfo settings: current(52/15/0), goal(50/15/0), user(50/8/1)
  Total transfers 7 (7 reads and 0 writes)
             < 2K      2K+     4K+     8K+    16K+    32K+    64K+   128K+
   Reads:       2       0       5       0       0       0       0       0
  Writes:       0       0       0       0       0       0       0       0

...
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Oliver Elphick                                Oliver.Elphick@lfix.co.uk
Isle of Wight                              http://www.lfix.co.uk/oliver
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      accounted worthy to escape all these things that shall
      come to pass, and to stand before the Son of man."    
                               Luke 21:36 



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