On 29 April 2008, "John" <jses2 ATgmail.com> wrote:
Message: 42 Date: Tue, 29 Apr 2008 17:43:43 -0400 Message-ID: <006901c8aa42$1a387450$0700a8c0 at ethan27>
Also please post you fstab and mtab files. It may be helpful in pointing out the problem. Also have you run yum update on the machine?
(fstab and mtab files posted previously)
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.
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.
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.
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
-
Lanny Marcus -
William L. Maltby