Comment 96 for bug 149076

At least in some cases, I suspect the errors might reflect an actual hardware problem (e.g. comment 19 from cosmix had a similar error to the one I encountered). I had a "samsung SH-S223" SATA DVD writer (showed up as "TSSTcorp CDDVDW SH-S223F SB00" in wodim), and it could read all media fine, but it repeatably gave an error when burning CDs, such as the one below:
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Errno: 5 (Input/output error), write_g1 scsi sendcmd: no error
CDB: 2A 00 00 00 18 B4 00 00 1F 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: 70 00 04 00 00 00 00 0A 00 00 00 00 08 03 00 00
Sense Key: 0x4 Hardware Error, Segment 0
Sense Code: 0x08 Qual 0x03 (logical unit communication crc error (ultra-dma/32)) Fru 0x0
Sense flags: Blk 0 (not valid)
cmd finished after 0.085s timeout 200s
/usr/bin/wodim: A write error occured.
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I had initially assumed it was related to this bug, but decided to try buying a new DVD drive. Bought the Pioneer DVR-218L SATA DVD writer (as this one apparently did fairly well in a dust test). When replacing the drive, there was quite a lot of dust in the case (removed with compressed air). A CD burn worked straight away no problems with the replacement drive (and all the same Ubuntu 9.10 software). So it seems as is the old drive might have had some dust inside the drive, causing this error. Replacing the drive fixed it. For laptops, obviously it's harder & more expensive to replace the drive, but for a desktop system replacing the drive doesn't cost too much and may solve the problem for some of you. For the remaining software issues, this bug seems to contain a number of different errors, which may or may not be related. E.g. Perhaps there should be separate bugs for each "sense code" error?