I'm getting in trouble with my new Plextor CD-RW drive. Maybe you can help
me. It's a PX-W1210A revision 1.07. I cannot get this hell working 100%. It
burn cd's perfectly, but, when I try to mount any cd, it just refuses. Very
strange, because the same cd mounts perfectly on my other cd-rom (Asus 34X).
Even the cds burned in plextor I cannot mount.
Well, starting to discover the problem, first I enabled DEBUG in
/proc/sys/dev/cdrom. Everything seems ok, no one error message. But, when I
saw syslog messages again, I've noted something very strange:
Jul 1 03:39:22 vampire kernel: ide-scsi: The scsi wants to send us more
data than expected - discarding data
Jul 1 03:39:22 vampire kernel: Unable to identify CD-ROM format.
I've already talked with J�rg Schilling (cdrecord creator), explained my
problem, and he said that error may be cabling or in newer linux kernels (He
says the drive works perfectly on linux 2.1.118). So, I used the IDE cable
that comes with Plextor. Nothing changes, the same errors happen.
As J�rg says that is better increasing SG_BIG_BUFF from 32k (default) to
128k in include/scsi/sg.h (On cdrecord documentation. I know this is part of
scsi generic module, but at this time, everything is a valid attempt), or to
64k, didn't make any difference too.
BTW: Tested on 2.2.18, 2.2.19 and 2.4.5
Rodrigo
(sorry my poor english)
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