Sorry in advance for the long post, but I'm trying to provide any
information that might be ful for diagnosing the problem.

The following is on an existing installation that has worked fine for some
time now. I recently discovered that my DVD+-R/W drive will not even
mount data discs, shortly after updating my Debian testing installation,
though I am not yet convinced this has anything to dow with the update
Specifically I get:

david@gosroth:~$ mount /media/dvdrw/
mount: I could not determine the filesystem type, and none was specified

However, if I specify all the options manually as root:

gosroth:~# mount /dev/hdb -t iso9660 /media/dvdrw/
mount: No medium found

And yes, there is a disc in the drive.

I think the reason for the difference in the error messages is simply the
fact that the type in fstab is 'auto'. Here is my fstab for reference:

# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
/dev/md0 / xfs defaults 0 1
/dev/sdb5 /backup ext3 defaults 0 2
/dev/sda5 /boot ext3 defaults 0 2
/dev/sda6 none swap sw 0 0
/dev/sdb6 none swap sw 0 0
/dev/hda /media/dvdrom iso9660 ro,user,noauto 0 0
/dev/hdb /media/dvdrw auto ro,user,noauto 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto 0 0
/dev/sdc1 /media/usbdev auto rw,user,noauto 0 0
/home /var/chroot/testing-ia32/home none bind 0 0
/tmp /var/chroot/testing-ia32/tmp none bind 0 0
proc /var/chroot/testing-ia32/proc proc defaults 0 0

The disc I am testing with works perfectly fine in my other drive. Just
to be sure I tried a couple different discs and it's always the same
thing. Yet near as I can tell the drive appears to be working perfectly
fine:

gosroth:/proc/ide/ide0/hdb# cdrecord -scanbus
scsibus1000:
1000,0,0 100000) 'TOSHIBA ' 'DVD-ROM SD-M1402' '1008' Removable
CD-ROM
1000,1,0 100001) 'SONY ' 'DVD RW DW-U10A ' '1.1d' Removable
CD-ROM
1000,2,0 100002) *
1000,3,0 100003) *
1000,4,0 100004) *
1000,5,0 100005) *
1000,6,0 100006) *
1000,7,0 100007) *
gosroth:/proc/ide/ide0/hdb# lspci
00:00.0 Memory controller: nVidia Corporation CK804 Memory Controller (rev
a3)
00:01.0 ISA bridge: nVidia Corporation CK804 ISA Bridge (rev a3)
00:01.1 SMBus: nVidia Corporation CK804 SMBus (rev a2)
00:02.0 USB Controller: nVidia Corporation CK804 USB Controller (rev a2)
00:02.1 USB Controller: nVidia Corporation CK804 USB Controller (rev a3)
00:04.0 Multimedia audio controller: nVidia Corporation CK804 AC'97 Audio
Controller (rev a2)
00:06.0 IDE interface: nVidia Corporation CK804 IDE (rev f2)
00:07.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev
f3)
00:08.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev
f3)
00:09.0 PCI bridge: nVidia Corporation CK804 PCI Bridge (rev a2)
00:0a.0 Bridge: nVidia Corporation CK804 Ethernet Controller (rev a3)
00:0b.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3)
00:0c.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3)
00:0d.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3)
00:0e.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
Miscellaneous Control
01:00.0 VGA compatible controller: nVidia Corporation NV43 [GeForce 6600
GT] (rev a2)
05:06.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado]
(rev 74)
gosroth:/proc/ide/ide0/hdb# lsmod
Module Size Used by
nvidia 8122424 34
nls_iso8859_1 9856 0
isofs 40036 0
binfmt_misc 17292 1
ipv6 285664 18
ext3 138512 2
jbd 65392 1 ext3
mbcache 14216 1 ext3
dm_snapshot 20664 0
dm_mirror 25216 0
dm_mod 62800 2 dm_snapshot,dm_mirror
ide_disk 20608 0
snd_intel8x0 39592 1
snd_ac97_codec 106456 1 snd_intel8x0
snd_ac97_bus 7296 1 snd_ac97_codec
snd_pcm_oss 48672 0
snd_mixer_oss 21888 1 snd_pcm_oss
snd_pcm 89096 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_timer 29192 1 snd_pcm
snd 65256 8
snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_ oss,snd_pcm,snd_timer
soundcore 15392 1 snd
i2c_nforce2 12544 0
psmouse 44432 0
serio_raw 12036 0
tsdev 13056 0
i2c_core 27776 2 nvidia,i2c_nforce2
snd_page_alloc 14864 2 snd_intel8x0,snd_pcm
pcspkr 7808 0
evdev 15360 1
xfs 485192 1
raid1 27008 1
md_mod 82844 2 raid1
ide_generic 5760 0 [permanent]
usbhid 45088 0
ide_cd 45088 0
sd_mod 25856 8
cdrom 40488 1 ide_cd
floppy 67112 0
3c59x 51380 0
mii 10368 1 3c59x
forcedeth 46340 0
ehci_hcd 36104 0
ohci_hcd 24836 0
amd74xx 19504 0 [permanent]
sata_nv 17412 6
libata 106784 1 sata_nv
scsi_mod 153008 2 sd_mod,libata
generic 11396 0 [permanent]
ide_core 147584 5
ide_disk,ide_generic,ide_cd,amd74xx,generic
thermal 20240 0
processor 38248 1 thermal
fan 9864 0
gosroth:/proc/ide/ide0/hdb# uname -a
Linux gosroth 2.6.18-4-amd64 #1 SMP Mon Mar 26 11:36:53 CEST 2007 x86_64
GNU/Linux


I am at a loss so any would be appreciated.

--
David Kettler
dkettler@u.washington.edu


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On Sat, Jul 28, 2007 at 01:01:48PM -0700, D. Kettler wrote:
> Sorry in advance for the long post, but I'm trying to provide any
> information that might be ful for diagnosing the problem.
>
> The following is on an existing installation that has worked fine for some
> time now. I recently discovered that my DVD+-R/W drive will not even
> mount data discs, shortly after updating my Debian testing installation,
> though I am not yet convinced this has anything to dow with the update

What all got updated? Did you change kernels? Do you still have the
old one?

You've only tested with the mount command. What about a command that
reads disks without trying to mount them, such as cdck?

Doug.


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On Sat, 28 Jul 2007, Douglas Allan Tutty wrote:

> On Sat, Jul 28, 2007 at 01:01:48PM -0700, D. Kettler wrote:
>> Sorry in advance for the long post, but I'm trying to provide any
>> information that might be ful for diagnosing the problem.
>>
>> The following is on an existing installation that has worked fine for some
>> time now. I recently discovered that my DVD+-R/W drive will not even
>> mount data discs, shortly after updating my Debian testing installation,
>> though I am not yet convinced this has anything to dow with the update
>
> What all got updated? Did you change kernels? Do you still have the
> old one?
>

It was just a normal apt-get update; apt-get upgrade. I didn't keep track
of everything, but I didn't change kernels. Honestly, I'm not entirely
sure the update was the problem but it's all that I could think of.

> You've only tested with the mount command. What about a command that
> reads disks without trying to mount them, such as cdck?
>

david@gosroth:~$ cdck -d /dev/hdb
Unable to read TOC because unable to open cdrom '/dev/hdb', reason: No
medium found

One thing that actually does work is 'eject /dev/hdb', which of course
doesn't have anything to do with reading but it does at least show that it
is the right device.

> Doug.
>

Thanks.

--
David Kettler
dkettler@u.washington.edu


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I checked dmesg and noticed several:

Buffer I/O error on device hdb, logical block <number>

errors. Again, hdb is the drive in question. Does anyone know what
these errors mean?

Also, the output of hdparm:

gosroth:~# hdparm /dev/hdb

/dev/hdb:
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
HDIO_GETGEO failed: Inappropriate ioctl for device


--
David Kettler
dkettler@u.washington.edu


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"D. Kettler" <dkettler@u.washington.edu> writes:

> I checked dmesg and noticed several:
>
> Buffer I/O error on device hdb, logical block <number>
>
> errors. Again, hdb is the drive in question. Does anyone know what
> these errors mean?

I had similar problems recently, but I don't know if it is the same
as what you have. I finally tracked it down to udftools causing the
problem, so I just do a '/etc/init.d/udftools stop'. That works for
default CD/DVD work, but I have to re-enable it for DVD+RW/CD-RW. If
you don't have udftools then this obviously won't .

--
Carl Johnson carlj@peak.org


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>
> I had similar problems recently, but I don't know if it is the same
> as what you have. I finally tracked it down to udftools causing the
> problem, so I just do a '/etc/init.d/udftools stop'. That works for
> default CD/DVD work, but I have to re-enable it for DVD+RW/CD-RW. If
> you don't have udftools then this obviously won't .
>
> --
> Carl Johnson carlj@peak.org
>

I'm afraid I don't have udftools installed, but thanks for trying.

--
David Kettler
dkettler@u.washington.edu


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So I have had time to look into this problem some more and I have
concluded that it really is a hardware issue. It seems my drive is on its
last legs and this was just a symptom of that fact. Thanks to everyone
who tried to out, though.

--
David Kettler
dkettler@u.washington.edu


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