Only one of two DVD drives is working

JAcky · 2009-08-27 21:38:27

Hello,

I have been trying to find a solution to this isse but I am unable to solve it.
The problem is that I have two DVD Drives, my main burner (Liteon) and an LG drive I want to use for playing DVDs because it has better error correction ... it will play disks without skipping the Liteon will not even open.
When I run eject /dev/sr1 the LG drive opens so I know Linux can work with the drive... I think it did work when I first installed ARCH but I am not 100% sure since I don't watch a lot of DVDs.

So as I said, DVD playback works fine with vlc on /dev/sr0 (Liteon) but not with /dev/sr1 (LG) ... any ideas?

Here is a bit of system info:

# dmesg
Driver 'sr' needs updating - please use bus_type methods                                                       
sr0: scsi3-mmc drive: 48x/48x writer cd/rw xa/form2 cdda tray                                                  
Uniform CD-ROM driver Revision: 3.20                                                                           
sr 0:0:0:0: Attached scsi CD-ROM sr0                                                                           
Driver 'sd' needs updating - please use bus_type methods                                                       
sr1: scsi3-mmc drive: 32x/32x writer dvd-ram cd/rw xa/form2 cdda tray                                          
sr 0:0:1:0: Attached scsi CD-ROM sr1

#ls -l /dev/sr*
brw-rw---- 1 root optical 11, 0 2009-08-27 21:24 /dev/sr0
brw-rw---- 1 root optical 11, 1 2009-08-27 21:24 /dev/sr1

And here the error reported by vlc

libdvdnav: Using dvdnav version 4.1.3
libdvdread: Using libdvdcss version 1.2.10 for DVD access
libdvdread: Could not open /dev/sr1 with libdvdcss.
libdvdread: Can't open /dev/sr1 for reading
libdvdnav: vm: failed to open/read the DVD
libdvdread: Using libdvdcss version 1.2.10 for DVD access
libdvdread: Could not open /dev/sr1 with libdvdcss.
libdvdread: Can't open /dev/sr1 for reading
[0x26c5548] dvdread demux error: DVDRead cannot open source: /dev/sr1
[0x269a6f8] main access error: no access module matched "dvd"
[0x25f92e8] main input error: open of `dvd:///dev/sr1' failed: no access module matched "dvd"

Also worth mentioning is that I am unable to mount CDs

#mount -t iso9660 /dev/sr1 /media/cd
mount: no medium found on /dev/sr1

The drive does work, I can reboot, pop the ARCH Linux DVD into the drive and it will start reading the CD ....
Any ideas?

hunterthomson · 2009-08-27 21:51:35

strange. I have two optical drives too. I have not had this problem. I have and /etc/fstab entree for it though? Maybe that will help you.

/dev/sr1 /mnt/edisk auto ro,user,unhide 0 0

JAcky · 2009-08-30 08:34:51

Unfortantely not since I am talking to the drive directly and attempting to manually mount the drive so fstab is not used.

This is my fstab

/dev/sr0               /media/dvd  auto    ro,user,noauto,unhide   0      0
/dev/sr1               /media/cd  auto    ro,user,noauto,unhide   0      0

This is so strange ... well I'll post the answer when I find it.

hunterthomson · 2009-09-01 00:24:21

JAcky wrote:

Unfortantely not since I am talking to the drive directly and attempting to manually mount the drive so fstab is not used.
This is my fstab
/dev/sr0               /media/dvd  auto    ro,user,noauto,unhide   0      0
/dev/sr1               /media/cd  auto    ro,user,noauto,unhide   0      0
This is so strange ... well I'll post the answer when I find it.

A couple other people have tried to tell me that fstab is "Only" used at boot time to mount file-systems. That it will do nothing when mounting from the shell aka mount /mnt/disk

Vary strange because that is completely wrong. Even when you fall to mount a drive with mount in the output it tells you it looks at /etc/fstab for mounting information.

[XXX@Linux-Box ~]$ mount /mnt/bob
mount: can't find /mnt/bob in /etc/fstab or /etc/mtab

Or did you meen something ells when you said " I am talking to the drive directly and attempting to manually mount the drive"
--------------------------------------------------------

If you still can't get it to work. Boot up Ubuntu Live CD and see if Ubuntu can find and mount the drive.
Maybe remove that "noauto" line form the fstab entire and replace the filesystem type "auto" with "iso9660"

Last edited by hunterthomson (2009-09-01 04:08:08)

Arch Linux

#1 2009-08-27 21:38:27

Only one of two DVD drives is working

#2 2009-08-27 21:51:35

Re: Only one of two DVD drives is working

#3 2009-08-30 08:34:51

Re: Only one of two DVD drives is working

#4 2009-09-01 00:24:21

Re: Only one of two DVD drives is working

Board footer