Can't see DVD drive

WoodLark · 03-28-2005, 05:38 AM

I am using Slackware 10.1. On my second ide channel, I have a CD drive as the master and a DVD-ROM drive as the slave. The bios sees both drives and identifies them with no problem. On boot, the CD drive is detected as device /dev/hdc, and when I go into KDE I am able to listen to CD's. However the DVD does not appear to be detected (I have looked at the output of dmesg). I have tried adding it to LILO with no effect. Before I realized that it wasn't even detected, I also tried adding it to /etc/fstab and tried a symbolic link. Anybody know what obvious step I am missing?

Bruce Hill · 03-28-2005, 06:22 AM

Post the output of:

dmesg | grep -i dvd
cat /etc/fstab
cat /etc/lilo.conf
/sbin/lspci
mount

and please use the Code button above, or code it by hand
so that the output is easier to read...

WoodLark · 03-31-2005, 05:22 AM

Sorry I haven't responded with the requested info, but its been a hectic week. Will try to get it done tonight. Thanks for your patience.

WoodLark · 04-02-2005, 07:20 AM

Chinaman, I finally got he info you requested:

dmesg | grep -i dvd returns nothing.

cat /etc/fstab:

Code:

/dev/hdb2        swap             swap        defaults         0   0
/dev/hda1        /                reiserfs    defaults         1   1
/dev/hda5        /usr             reiserfs    defaults         1   2
/dev/hda6        /var             reiserfs    defaults         1   2
/dev/hda7        /tmp             reiserfs    defaults         1   2
/dev/hda8        /home            reiserfs    defaults         1   2
/dev/cdrom       /mnt/cdrom       iso9660     noauto,owner,ro  0   0
/dev/fd0         /mnt/floppy      auto        noauto,owner     0   0
devpts           /dev/pts         devpts      gid=5,mode=620   0   0
proc             /proc            proc        defaults         0   0
/dev/sda1       /mnt/flash      auto            noauto,user     0       0
/dev/dvd        /mnt/dvd        iso9660         noauto,user,ro  0       0
roo

cat /etc/lilo.conf

Code:

# LILO configuration file
# generated by 'liloconfig'
#
# Start LILO global section
boot = /dev/hda
message = /boot/boot_message.txt
prompt
timeout = 1200
# Override dangerous defaults that rewrite the partition table:
change-rules
  reset
# VESA framebuffer console @ 1024x768x256
vga = 773
append = "hdc = ide-scsi hdd = ide-scsi"
# Normal VGA console
# vga = normal
# VESA framebuffer console @ 1024x768x64k
# vga=791
# VESA framebuffer console @ 1024x768x32k
# vga=790
# VESA framebuffer console @ 1024x768x256
# vga=773
# VESA framebuffer console @ 800x600x64k
# vga=788
# VESA framebuffer console @ 800x600x32k
# vga=787
# VESA framebuffer console @ 800x600x256
# vga=771
# VESA framebuffer console @ 640x480x64k
# vga=785
# VESA framebuffer console @ 640x480x32k
# vga=784
# VESA framebuffer console @ 640x480x256
# vga=769
# End LILO global section
# Linux bootable partition config begins
image = /boot/vmlinuz
  root = /dev/hda1
  label = Linux
  read-only
# Linux bootable partition config ends

/sbin/lspci:

Code:

00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 02)
00:01.0 PCI bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 02)
00:07.0 ISA bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 02)
00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01)
00:07.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB (rev 01)
00:07.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 02)
00:13.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone] (rev 24)
01:00.0 VGA compatible controller: ATI Technologies Inc 3D Rage Pro AGP 1X/2X (rev 5c)

mount:

Code:

/dev/hda1 on / type reiserfs (rw)
proc on /proc type proc (rw)
/dev/hda5 on /usr type reiserfs (rw)
/dev/hda6 on /var type reiserfs (rw)
/dev/hda7 on /tmp type reiserfs (rw)
/dev/hda8 on /home type reiserfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
usbfs on /proc/bus/usb type usbfs (rw)

To me, it looks like the OS does not even see the DVD drive, even though the BIOS does.

urka58 · 04-02-2005, 03:30 PM

I would try
grep DVD | dmesg (DVD is upper case)
Anyway as you are using ide-scsi emulation your DVD drive will be recognized as /dev/sr1 (scd1 is also possible).
try creating a symlink like (as root)
ln -s /dev/sr1 /dev/dvd
Also check your /dev/cdrom as is should be a symlink to sr0 (scd0)
Hope this helps
Ciao

Bruce Hill · 04-03-2005, 07:54 AM

First, this command is not case sensitive:

Code:

mingdao@titus:~$ dmesg | grep -i dvd
hdc: UJDA760 DVD/CDRW, ATAPI CD/DVD-ROM drive
hdc: ATAPI 24X DVD-ROM CD-R/RW drive, 2048kB Cache, UDMA(33)
mingdao@titus:~$ dmesg | grep -i dVd
hdc: UJDA760 DVD/CDRW, ATAPI CD/DVD-ROM drive
hdc: ATAPI 24X DVD-ROM CD-R/RW drive, 2048kB Cache, UDMA(33)
mingdao@titus:~$ dmesg | grep -i DVD
hdc: UJDA760 DVD/CDRW, ATAPI CD/DVD-ROM drive
hdc: ATAPI 24X DVD-ROM CD-R/RW drive, 2048kB Cache, UDMA(33)
mingdao@titus:~$

So before we go any further, you need to determine if your
system actually sees the drive or not. Just because dmesg
did not find it does not mean it's not there. It could be that
you dmesg is too full and it can't retrieve that information,
which would have been from your last boot before you issued
that command. You can look in /var/log/syslog and if the drive
is not in there, we'll first have to get it recognized by Slack.

WoodLark · 04-03-2005, 09:38 AM

/var/log/syslog did show device /dev/hdd being assigned to the DVD drive.

I commented out the line in /etc/lilo.conf that reassigned it as a SCSI drive, and I changed /etc/fstab to mount /dev/hdd as /mnt/dvd.

I can now view movies on the DVD drive although there is no sound, even through the jack on the front of the DVD drive. My next project is to figure out where the sound is. Thanks guys!