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2005 Jan 13 10:48

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Re: [vox-tech] Plextor PX-712A not working...
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Re: [vox-tech] Plextor PX-712A not working...



On Thu 13 Jan 05, 10:35 AM, Dylan Beaudette <debeaudette@ucdavis.edu> said:
> On Thursday 13 January 2005 10:16 am, Peter Jay Salzman wrote:
> > On Thu 13 Jan 05, 10:18 AM, Dylan Beaudette <dylan@iici.no-ip.org> said:
> > > Hi everyone,
> > >
> > > I haven't bothered to try out the CDROM drive on this machine since linux
> > > was installed, and now with a 2.6 series kernel my CDROM drive has
> > > vanished! (or at least from the perspective of commands like mount)
> > >
> > > The drive is connected to the primary IDE channel, and my hard drive is
> > > connected to a serial IDE channel. As of kernel 2.6 my hard drive is
> > > accessed as a SCSI device. However, my cdrom drive does not answer to
> > > requests sent to hda,hdb,hdc,hdd ... nor to any SCSI devices...
> > >
> > > I googled for a possible kernel module that I need in order to use this
> > > drive, but didn't seem to find any pages suggesting that.
> > >
> > > also -- my kern.log and dmesg output don't even mention the drive...
> > >
> > > Any ideas would be quite helpful!
> >
> > Hi Dylan,
> >
> > If this is 2.6 we're talking about, do:
> >
> >    modprobe -a ide_cd
> >
> > If it says "module not found", look in your .config file to see if the
> > module was built into the kernel.
> >
> > Also, ide_cd and ide-scsi are mutually orthogonal.  Make sure that ide-scsi
> > is NOT enabled (or that the module is NOT loaded).
> >
> > Also, remove any arguments like:
> >
> >    hdX=ide-scsi
> >
> > that you may be passing to the kernel via lilo or grub.
> >
> > HTH,
> > Pete
> >
> > PS- Ignore cdrecord -scanbus.  It's useless now.  You access the drive
> > using the IDE name, as in:
> >
> >    cdrecord dev=/dev/hdX etc etc etc...
> 
> thanks for the ideas Pete!
> 
> here is the breakdown: 
> ide_cd module was loaded
> ide-scsi module was not loaded
> 
> kernel arguments are limited to:
> root=/dev/sda3 ro
> 
> ... i just checked in the internal connections, and the drive seems to be 
> connected properly. The drive mechanics (tray eject) seem to work fine, and 
> the machine is only about 6 months old...
> 
> I'm stumped!
 
Hy Dylan,

I'm sure there's a perfectly logical explanation.  There almost always is.
:)

You said that the cd drive doesn't show up in dmesg.  Fine.

But does your *scsi card* show up in dmesg?

Do you have the proper low level scsi card driver installed?

Pete

-- 
The mathematics of physics has become ever more abstract, rather than more
complicated.  The mind of God appears to be abstract but not complicated.
He also appears to like group theory.  --  Tony Zee's "Fearful Symmetry"

GPG Fingerprint: B9F1 6CF3 47C4 7CD8 D33E  70A9 A3B9 1945 67EA 951D
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