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Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


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Old 11-15-2006, 01:13 AM   #1
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DVD/CD-RW problem. DVD works, CD dosen't.

It looks like it is tough to find a solution to this problem. I've been searching all day. The problem is that my DVD/CD-RW drive used to work, now only DVDs are recognized. I've tried numerous CDs, I cleaned the lense, same problem. I'm currently using a NEC LaVie L LL800R/7 laptop running Kubuntu 2.6.12-10-386.

First of all, here is what lspci said...

0000:00:00.0 Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 03)
0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP]
0000:00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 42)
0000:00:07.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
0000:00:07.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 1a)
0000:00:07.4 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 40)
0000:00:07.5 Multimedia audio controller: VIA Technologies, Inc. VT82C686 AC97 Audio Controller (rev 50)
0000:00:07.6 Communication controller: VIA Technologies, Inc. Intel 537 [AC97 Modem] (rev 30)
0000:00:09.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
0000:00:0a.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev 80)
0000:00:0a.1 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev 80)
0000:00:0b.0 FireWire (IEEE 1394): NEC Corporation IEEE 1394 Host Controller (rev 01)
0000:01:00.0 VGA compatible controller: ATI Technologies Inc Rage Mobility P/M AGP 2x (rev 64)
I found this odd little bit in dmesg:

[4294671.758000] Probing IDE interface ide1...
[4294672.550000] hdc: UJDA710, ATAPI CD/DVD-ROM drive
.  **Probing other IDE interfaces and finding nothing here**
[4294675.629000] hdc: ATAPI 24X DVD-ROM CD-R/RW drive, 2048kB Cache
[4294675.629000] Uniform CD-ROM driver Revision: 3.20
Seems it is probably the driver, but I remembered with windows it seemed to be some kind of generic driver, although now I'm not sure.

When a DVD is inserted, demsg gives me something like this:
[4298023.345000] ISO 9660 Extensions: Microsoft Joliet Level 3
[4298023.608000] ISOFS: changing to secondary root
Any CD I insert does not even log anything.

Oh, and of course, here is my fstab. As you can see, I have played around with it a little and nothing worked.
# /etc/fstab: static file system information.
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc /proc proc defaults 0 0
/dev/hda1 / ext3 defaults,errors=remount-ro,atime,auto,rw,dev,exec,suid,nouser 0 1
/dev/hda5 none swap sw 0 0
#/dev/hdc        /media/cdrom0   udf,iso9660 user,noauto     0       0
/dev/fd0 /media/floppy0 auto ,atime,noauto,rw,dev,exec,suid,user 0 0
# /dev/hdc /cdrom iso9660  0 0
# /dev/hdc /media/cdrom0 auto ,atime,auto,rw,nodev,noexec,nosuid,users 0 0
/dev/hdc                /media/cdrom0            auto    auto,user,ro 0 0
I've tried mount -t iso9660 /dev/hdc /media/cdrom0, I've tried some more plain variations. Tried disks burnt in windows and linux. I get nothing. Googled and could find nothing usefull about this drive, but that may be I just don't know what I'm looking for exactly.

Hopefully this is an interesting problem. I'll post any other info I can get if more is needed. Any advice would be appreciated.
Old 11-15-2006, 06:39 AM   #2
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Distribution: RHEL/CentOS/SL 5 i386 and x86_64 pata for IDE in use
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Use a factory CD to test and not one you burned then try as root; mount -t auto /dev/hdc

It is quite possible that your cleaning efforts may have misaligned the laser's focal lens for reading CD media or that it just died(it does happen). Different lasers are used to read CD and DVD media BTW.
Old 11-15-2006, 07:27 PM   #3
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Distribution: Kubuntu
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I had already tried that, but you are unfortunately right on the second point. It must have just burnt out. I tried my old windows 98 bootable cd and it just passed right by. Even double checked the bios settings and everything is fine. Well, at least it still reads DVDs.

Please ignore me, I was stupid enough to not try a bootable disc first. Bleh.


cd, dvd, nec

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