On Thu, 2008-05-01 at 05:49 -0500, Lanny Marcus wrote:
> On 29 April 2008, "John" <jses2 ATgmail.com> wrote:
> <snip>
> I ran "yum update". The box is now 100% up to date. The problem did not go away.
> On CentOS 5, the Teac DV-516D DVD/CD reader can mount a CD, without
> any problem. However, it sees a DVD as blank. On Windows XP, it works
> perfectly, with CD and DVD media. I sent an email to Teac Tech
> Support, asking for the URL where I could download their Diagnostics
> for the drive and got this reply:
>
> >Unfortunately, no diagnostics are available as checking the read
> capabilities within >Windows XP is most than acceptable. If the
> drive does not work properly within >Windows or any other PC, then
> the drive needs to be repaired or replaced.
It's been a long thread, so I don't recall what all you've tried.
1st, /var/log/dmesg (also in messages)? Mine has
--------------------------------------------
Probing IDE interface ide0...
hda: LITE-ON DVDRW SHM-165P6S, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
.
.
.
hda: ATAPI 48X DVD-ROM DVD-R-RAM CD-R/RW drive, 2048kB Cache,
UDMA(66) Uniform CD-ROM driver Revision: 3.20
--------------------------------------------
After inserting media (video in this case), I get
--------------------------------------------
May 1 13:13:17 centos501 kernel: UDF-fs INFO UDF 0.9.8.1
(2004/29/09) Mounting volume 'SHANGRILA', timestamp 2004/11/11
05:24 (1f10)
May 1 13:13:17 centos501 hald: mounted /dev/hda on behalf of uid 500
May 1 13:14:59 centos501 hald: unmounted /dev/hda from
'/media/SHANGRILA' on behalf of uid 500
May 1 13:15:22 centos501 kernel: UDF-fs INFO UDF 0.9.8.1
(2004/29/09) Mounting volume 'SHANGRILA', timestamp 2004/11/11
05:24 (1f10)
May 1 13:15:22 centos501 hald: mounted /dev/hda on behalf of uid 500
--------------------------------------------
Any product literature? Is the drive ATAPI (MMC) compatible?
Have you checked on the web to see if there is a prom upgrade available?
A long time ago I found a site that has the upgrades for many drives.
BTW, a google search might get specs if you've no literature.
When you mount a CD, note device (sda, hda, ...) and then stick the DVD
media in. See if you can dd from it like so
dd if=/dev/sdc of =/dev/null count=50
That might get you a clue as to if the CentOS at least handles the
device.
Module Size Used by
udf 76997 1
autofs4 24517 2
hidp 23105 2
dm_multipath 21577 0
sg 36061 0
ide_cd 40033 1
cdrom 36705 1 ide_cd
dm_snapshot 20709 0
dm_zero 6209 0
dm_mirror 28741 0
dm_mod 58201 9
dm_multipath,dm_snapshot,dm_zero,dm_mirror
sata_via 15557 3
libata 115833 1 sata_via
sd_mod 24897 5
scsi_mod 132685 3 sg,libata,sd_mod
Normally, the sg, scsi_mod, cdrom are used for MMC-complioant drives
(ATAPI) to utilize the SCSI command set across the ATA interface.
I think the ide_cd is just a left-over in my grub menu.lst that used to
be needed, but not sure.
>
> Disappointing and I will probably never purchase Teac components
> again. The box is dual boot (WinXP & CentOS 5). Years ago, I purchased
> SystemSuite 4. I installed that and ran their generic diagnostics on
> the Teac DVD/CD reader and it passed. I am not positive the Teac drive
> is working perfectly, but I have a high level of confidence in it.
I'm with you. Except for possibly having an old prom version in it
and/or needing some loadable modules for it in CentOS, it sounds like
the HW is good enough.
Have you done an lsmod when a CD is in? Then when a DVD media is in?
Here's mine with DVD in. Lot's of un-related stuff I'm sure - but I've
snipped out anything I'm sure is not related.
>
> My belief is that somewhere, there is either no support for the Teac
> DV-516D in CentOS 5, or, that something required to automount a DVD in
> it is not configured properly. It can mount a CD without any problem.
I vote for option two. Now, that *could* be due to the age of the drive
(i.e. the prom revision is missing something that has come to be
considered "universal" by the writers of the CD/DVD code portions).
However, it could also be that, like other manufacturers in the past,
there is some incompatibility in the drive. For more information, and a
serious test of your masochistic bias, install the cdr-tools package and
read the stuff under /usr/share/docs related to it.
> <snip sig stuff>
HTH
--
Bill