[paranoia] SOLVED: Problems with cdparanoia

Sims, Ted ted at tedsims.com
Fri Dec 6 04:50:47 PST 2002 


You do not have to pass "hdc=ide-scsi" with the config I explained below.

I'm afraid I don't know about your libparanoia problem, but I'm sure someone on this list should know.

Kindest regards

On Fri, 6 Dec 2002 11:26:47 +0100 
"Peron, Stéphane" <stephane.peron at dcmc.creditlyonnais.fr> wrote:

> Hi .... 
> 
> Thanks Sims .. from now I can read and burn without any problem .... 
> 
> But I can't ripp with libparanoia .... that lib doesn't seem to find my
> drive.
> For example, when I run grip, my cdrom is read, I can select files to
> extract and when I try to dot it, I have the following message :
> "Can't open the cdrom drive" or something like this.
> 
> thanks for your help !
> 
> Stéphane PERON
> 
> PS : So... do I have to pass "hdc=ide-scsi "with the config explained below
> ?
> 
> -----Message d'origine-----
> De : Sims, Ted [mailto:ted at tedsims.com] 
> Envoyé : mardi 3 décembre 2002 00:58
> À : paranoia at xiph.org
> Objet : Re: [paranoia] SOLVED: Problems with cdparanoia
> 
> 
> Here is the setup I always use which works well...
> 
> (1) At compile time-
> 	(a) ide atapi cdrom _off_
> 	(b) scsi cdrom support _on_
> 	(c) scsi generic support _on_
> 
> (2) So we can read the cdrom with the expected device	
> 	ln -s /dev/sr0 /dev/cdrom
> 
> (3) For writing to the cdrom, use device /dev/sg0  (or, on some systems,
> /dev/scd0)
> 
> If set up this way, it is not necessary to pass 'hdx=ide-scsi' to the kernel
> at boot. The messages at boot will include something like this:
> 
>  hdc: LITE-ON LTR-12101B, ATAPI CD/DVD-ROM drive
>   <snip>
>  SCSI subsystem driver Revision: 1.00
>  scsi0 : SCSI host adapter emulation for IDE ATAPI devices
>     Vendor: LITE-ON   Model: LTR-12101B        Rev: LS3B
>     Type:   CD-ROM                             ANSI SCSI revision: 02
>  Attached scsi CD-ROM sr0 at scsi0, channel 0, id 0, lun 0
>  Uniform CD-ROM driver Revision: 3.12
>  sr0: scsi3-mmc drive: 32x/32x writer cd/rw xa/f
> 
> indicating that scsi driver "got it". You won't be able to use (or need) the
> /dev/hdc device.
> 
> -Ted
> 
> 
> 
> 
> On 02 Dec 2002 01:43:29 -0700
> Kim Lux <lux at diesel-research.com> wrote:
> 
> > Hi people
> > 
> > Disclaimer: I'm a linux newbie.  Some of this may be incorrect. 
> > 
> > I spent a good day troubleshooting cdparanoia crashing my RH8 linux
> > install.  I traced the problem to a conflict between two kernel options
> > involving SCSI operation of an IDE/ATAPI CDROM drive. 
> > 
> > Related posts: "What is the difference between /dev/sg0, /dev/scd0..."
> > and
> > "cdparanoia crashes linx, hdd loses interrupt, can't kill process" 
> > These
> > posts were made to linux.redhat, etc. over the weekend. 
> > 
> > Background Info
> > 
> > Frequently, certain CDROM applications ie cdparanoia and cd burning
> > require
> > SCSI access to an IDE/ATAPI CDROM device because it offers a richer set
> > of features
> > to control it.
> > 
> > The default manner of CDROM control in a stock Linux kernel is via the
> > ATAPI interface.  In fact, it appears to me that unless the ATAPI
> > interface is turned off as a kernel option, the CDROM drive will be
> > accessed
> > this way no matter what options might be selected elsewhere. (Ie: grub
> > and
> > lilo)
> > 
> > Symptoms Of a IDE/ATAPI SCSI CDROM Problem
> > 
> > - linux crashes or becomes unresponsive when accessing the CDROM
> > - the message "hdx lost interrupt" appears (x = CDROM drive)
> > - CDROM applications hang
> > - improper operation of the CDROM in general
> > - your operation require SCSI CDROM access
> > - a dirty dmesg printout after CDROM operation
> > - the process using the CDROM won't kill after crashing
> > 
> > Root Problem
> > 
> > IDE-ATAPI CDROM operation becomes unstable under SCSI emulation if both
> > of the following options are
> > selected:
> > 
> > a) SCSI CDROM Support
> > b) IDE-SCSI Emulation
> > 
> > SCSI CDROM support is enabled to allow the use of a true SCSI CDROM
> > IDE-SCSI Emulation is enabled to allow Linux to emulate a SCSI CDROM
> > when
> > accessing an IDE CDROM.
> > 
> > WARNING: There may be more to this issue than resolving these two
> > options.
> > My CDROM works OK with these two options resolved.  Others are saying
> > that
> > they need to disable all the low level SCSI drivers in the kernel.    
> > 
> > 
> > So... to set a CDROM up for SCSI access, one should perform the
> > following:
> > 
> > a) check that the line hdx=ide-scsi appears in your boot loader (ie lilo
> > or
> > grup.) x = the position of the cdrom drive ie hda for primary master,
> > hdb
> > for primary slave, hdc for secondary master, etc.  This line will
> > request
> > that linux operate the CDROM in SCSI emulation mode 
> > 
> > b) in the kernel options, the ATAPI CDROM support MUST be turned OFF. 
> > This option is selected under ATA/IDE/MFM/RLL Support-> ATA/IDE.. Block
> > Devices-> Include IDE/ATAPI CDROM Support.  Turning this option off will
> > force Linux to access the CDROM by another method. 
> > 
> > c) in the kernel options, in the same area, SCSI Emulation Support must
> > be
> > turned ON.  This allows Linux to access the EDI/ATAPI CDROM via the SCSI
> > emulation interface.  
> > 
> > d) in the kernel options, Under SCSI Support, turn off SCSI CDROM
> > Support.
> >  SCSI CDROM Support is used to access a real SCSI CDROM.       
> > 
> > e) in /dev/, set the /cdrom link to point to /hdd.  Actually I am not
> > sure
> > about this.
> > 
> > f) It might or might not help to disable autorun or at least disable the
> > CDROM player application from attempting to control the CDROM device. 
> > 
> > I hope this helps someone. 
> > 
> > Nobody
> > 
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