�ん�もん����・・

I googled and it seems to me the prob is something about devfs or about new 2.6.12.12 kernel but as I’m a such of almost dummy newbie I’m not able to fix it. Here some outputs:

Note.- devfs changes “dev/hdc” to “/dev/ide/host0/bus1/target0/lun0/cd”

[panoramix@panoramix ~]$ ls -la /dev/hdc
brw-rw—- 1 panoramix cdrom 22, 0 ene 12 00:57 /dev/hdc
[panoramix@panoramix ~]$ ls -la /dev/ide/host0/bus1/target0/lun0/cd
lrwxrwxrwx 1 root root 18 ene 12 00:57 /dev/ide/host0/bus1/target0/lun0/cd -> ../../../../../hdc

I tested changing perms as follows and rebooting…

root@panoramix /]# chown root.cdrom /dev/ide/host0/bus1/target0/lun0/cd
[root@panoramix /]# chmod 666 /dev/ide/host0/bus1/target0/lun0/cd

…but the prob still out there. I checked out:

[panoramix@panoramix ~]$ cdrecord dev=/dev/hdc -checkdrive
Cdrecord-Clone 2.01.01a03-dvd (i686-pc-linux-gnu) Copyright (C) 1995-2005 Jörg Schilling
Note: This version is an unofficial (modified) version with DVD support
Note: and therefore may have bugs that are not present in the original.
Note: Please send bug reports or support requests to warly at mandriva.com.
Note: The author of cdrecord should not be bothered with problems in this version.
scsidev: ‘/dev/hdc’
devname: ‘/dev/hdc’
scsibus: -2 target: -2 lun: -2
Warning: Open by ‘devname’ is unintentional and not supported.
Linux sg driver version: 3.5.27
Using libscg version ‘schily-0.8′.
Device type : Removable CD-ROM
Version : 0
Response Format: 1
Vendor_info : ‘RICOH ‘
Identifikation : ‘CD-R/RW MP7083A ‘
Revision : ’1.20′
Device seems to be: Generic mmc CD-RW.
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC SWABAUDIO
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R96R

…and in order to compare

[root@panoramix panoramix]# cdrecord dev=/dev/ide/host0/bus1/target0/lun0/cd -checkdrive
Cdrecord-Clone 2.01.01a03-dvd (i686-pc-linux-gnu) Copyright (C) 1995-2005 Jörg Schilling
Note: This version is an unofficial (modified) version with DVD support
Note: and therefore may have bugs that are not present in the original.
Note: Please send bug reports or support requests to warly at mandriva.com.
Note: The author of cdrecord should not be bothered with problems in this version.
scsidev: ‘/dev/ide/host0/bus1/target0/lun0/cd’
devname: ‘/dev/ide/host0/bus1/target0/lun0/cd’
scsibus: -2 target: -2 lun: -2
Warning: Open by ‘devname’ is unintentional and not supported.
Linux sg driver version: 3.5.27
Using libscg version ‘schily-0.8′.
Device type : Removable CD-ROM
Version : 0
Response Format: 1
Vendor_info : ‘RICOH ‘
Identifikation : ‘CD-R/RW MP7083A ‘
Revision : ’1.20′
Device seems to be: Generic mmc CD-RW.
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC SWABAUDIO
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R96R

IMHO nothing wrong.

I tested including into lilo.conf “hdc=ide-scsi and in fact the device is mounted but the system doesn’t recognize it.

panoramix@panoramix /]$ ls -la /dev/cdrom3
ls: /dev/cdrom3: No existe el fichero o el directorio

I also tested “playing” with /etc/modules.conf, /etc/devfs, /etc/default and others but nothing seems to work. This is my /etc/modules.devfs connfig

# /etc/modules.devfs
# Richard Gooch 24-MAR-2002
#
# THIS IS AN AUTOMATICALLY GENERATED FILE. DO NOT EDIT!!!
# THIS FILE WILL BE OVERWRITTEN EACH TIME YOU INSTALL DEVFSD!!!
# Modify /etc/modules.conf instead.
# This file comes with devfsd-vDEVFSD-VERSION which is available from:
# http://www.atnf.csiro.au/~rgooch/linux/
# or directly from:
# ftp://ftp.atnf.csiro.au/pub/people/rgooch/linux/daemons/devfsd-vDEVFSD-VERSION.tar.gz

###############################################################################
# Sample configurations that you may want to place in /etc/modules.conf
#
#alias sound-slot-0 sb
#alias /dev/v4l bttv
#alias /dev/misc/watchdog pcwd
#alias gen-md raid0
#alias /dev/joysticks joystick
#probeall scsi_hostadapter sym53c8xx

###############################################################################
# Generic section: do not change or copy
#
# All HDDs
probeall /dev/discs scsi_hostadapter sd_mod ide-probe-mod ide-disk ide-floppy DAC960
alias /dev/discs/* /dev/discs

# All CD-ROMs
probeall /dev/cdroms scsi_hostadapter sr_mod ide-probe-mod ide-cd cdrom
alias /dev/cdroms/* /dev/cdroms
alias /dev/cdrom /dev/cdroms

# All tapes
probeall /dev/tapes scsi_hostadapter st ide-probe-mod ide-tape
alias /dev/tapes/* /dev/tapes

# All SCSI devices
probeall /dev/scsi scsi_hostadapter sd_mod sr_mod st sg

# All IDE devices
probeall /dev/ide ide-probe-mod ide-disk ide-cd ide-tape ide-floppy
alias /dev/hd* /dev/ide

# IDE CD-ROMs
alias /dev/ide/*/cd ide-cd

# SCSI HDDs
probeall /dev/sd scsi_hostadapter sd_mod
alias /dev/sd* /dev/sd

# SCSI CD-ROMs
probeall /dev/sr scsi_hostadapter sr_mod
probeall /dev/scd scsi_hostadapter sr_mod
alias /dev/scd* /dev/scd
alias /dev/scsi/*/cd /dev/scd

# SCSI tapes
probeall /dev/st scsi_hostadapter st
alias /dev/st* /dev/st
alias /dev/nst* /dev/st

# SCSI generic
probeall /dev/sg scsi_hostadapter sg
alias /dev/sg* /dev/sg
alias /dev/scsi/*/generic /dev/sg
alias /dev/pg /dev/sg
alias /dev/pg* /dev/sg

# Floppies
alias /dev/floppy floppy
alias /dev/fd* floppy

# RAMDISCs
alias /dev/rd rd
alias /dev/ram* rd

# Loop devices
alias /dev/loop* loop

# Meta devices
alias /dev/md* gen-md

# Parallel port printers
alias /dev/printers* lp
alias /dev/lp* /dev/printers

# Soundcard
#alias /dev/sound sound-slot-0
#alias /dev/audio /dev/sound
#alias /dev/mixer /dev/sound
#alias /dev/dsp /dev/sound
#alias /dev/dspW /dev/sound
#alias /dev/midi /dev/sound

# Joysticks
alias /dev/js* /dev/joysticks

# Serial ports
alias /dev/tts* serial
alias /dev/ttyS* /dev/tts
alias /dev/cua* /dev/tts

# Input devices
alias /dev/input/mouse* mousedev

# Miscellaneous devices
alias /dev/misc/atibm atixlmouse
alias /dev/misc/inportbm msbusmouse
alias /dev/misc/logibm busmouse
alias /dev/misc/rtc rtc
alias /dev/misc/agpgart agpgart
alias /dev/rtc /dev/misc/rtc

# PPP devices
alias /dev/ppp* ppp_generic

# Video capture devices
alias /dev/video* /dev/v4l
alias /dev/vbi* /dev/v4l

# agpgart
alias /dev/agpgart agpgart
alias /dev/dri* agpgart

# Irda devices
alias /dev/ircomm ircomm-tty
alias /dev/ircomm* /dev/ircomm

# Raw I/O devices
alias /dev/rawctl /dev/raw

# Nvidia driver
alias /dev/nvidia* NVdriver

# Pull in the configuration file. Do this last because modprobe(8) processes in
# per^H^H^Hreverse order and the sysadmin may want to over-ride what is in the
# generic file
include /etc/modules.conf

If I load Knoppix everything is OK and the toaster works fine (I gess this is the only way I get to make backup!!)

This is my first big challenge with Linux and my one and only neuron really wants to win so it would be appreciated any kind of help

PD.- Sorry for my english

TIA

DMA is enabled in the bios for both drives, but disabled only for /dev/hdd (the burner) by the OS at boot, as reported by dmesg…
====================
mydebian:/home/nume# dmesg|grep hdd
ide1: BM-DMA at 0xb808-0xb80f, BIOS settings: hdc:DMA, hdd:DMA
hdd: SONY CD-RW CRX215E1, ATAPI CD/DVD-ROM drive
hdd: ATAPI 40X CD-ROM CD-R/RW drive, 2048kB Cache, UDMA(33)
hdd: irq timeout: status=0xd0 { Busy }
hdd: irq timeout: error=0×00
hdd: DMA disabled
hdd: ATAPI reset complete
hdd: irq timeout: status=0xd0 { Busy }
hdd: irq timeout: error=0×00
hdd: ATAPI reset complete
hdd: irq timeout: status=0xd0 { Busy }
hdd: irq timeout: error=0×00
hdd: ATAPI reset complete
hdd: irq timeout: status=0xd0 { Busy }
hdd: irq timeout: error=0×00
hdd: DMA disabled
hdd: ATAPI reset complete
====================

using hdparm -d 1 /dev/hdd doesn’t seem to make a difference either.

I’m running Debian Sarge with kernel 2.6.7 and otherwise fully upgraded as of yesterday. I’ll look for a newer kernel in Sid, Do you think that could be the problem?

Performance has improved relatively, older kernels couldn’t write faster than 22X now I can get 32X. But this is still not the performance expected from a 52X writer. Back in the days of windows ( I don’t have windows installed now ) I could burn at 40X and more.

I know it’s a silly difference, but I just want to know where to file a bug reprot. kernel ? cdrecord ? or maybe broken hardware.

I will try cdrdao and see if there is any difference.

Thanks.

Burning with cdrdao is useful because its completely separate from cdrecord. The issues you are seeing might well be problems with cdrecord as opposed to kernel stuff.

When you say performance has now improved, do you mean that everything is fine and dandy now with the latest kernels?