Re: "logical unit communication failure" c2scan NEC ND-4550A 1.07
Matthias Andree <matthias.andree@gmx.de> wrote:
> Greeting,
>
> running a C2 scan on an audio CD in a NEC ND-4550A (FW rev. 1.07) causes
> errors like these, where a C2 scan of the same CD in a Plextor
> PX-W4824TA (FW rev. 1.06) on the same ATA cable succeeds.
>
> Read speed: 7056 kB/s (CD 40x, DVD 5x).
> Write speed: 2822 kB/s (CD 16x, DVD 2x).
> Capacity: 202390 Blocks = 404780 kBytes = 395 MBytes = 414 prMB
> Sectorsize: 2048 Bytes
> Copy from SCSI (1,0,0) disk to file '/dev/null'
> end: 202390
> readcd: Success. read_cd: scsi sendcmd: no error
> CDB: BE 00 00 00 00 31 00 00 31 FA 00 00
> status: 0x2 (CHECK CONDITION)
> Sense Bytes: 70 00 04 00 00 00 00 0A 00 00 00 00 08 00 00 00
> Sense Key: 0x4 Hardware Error, Segment 0
> Sense Code: 0x08 Qual 0x00 (logical unit communication failure) Fru 0x0
> Sense flags: Blk 0 (not valid)
> resid: 123748
> cmd finished after 6.422s timeout 40s
> readcd: Success. Cannot read source disk
> readcd: Retrying from sector 49.
Did you try this on a platform that is known to work?
If not, first try SchilliX ftp://ftp.berlios.de/pub/schillix/
This looks like a bug caused by a DMA implementation bug in your OS
in case it is not caused by an internal malfunction of the drive.
Jörg
--
EMail:joerg@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin
js@cs.tu-berlin.de (uni)
schilling@fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/
URL: http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily
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