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Thread: Disappearing DVD Drive

  1. #1
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    Disappearing DVD Drive

    Problem was present in 9.10 & remains in new (not update) install of 10.04.

    Boot computer, DVD drive identified, can read data & audio disks, can also write to media using brasero & K3b.

    Some hours later DVD drive disappears - no apparent reason, the only way (so far) I've found to get it back (for a while) is to reboot. K3b/brasero report no optical drive, cannot mount with mount from command line (dev/sr0 /media/cdrom0 -t etc)

    Replaced DVD drive (& cables) & problem persists. Added
    Code:
    /dev/sr0       /media/cdrom0   udf,iso9660 user,noauto     0       0
    to fstab in an attempt to resolve, but no change

    Here are the results of lshw -C disk for the two states:

    Drive not recognised

    Code:
    *-cdrom
           description: DVD-RAM writer
           physical id: 0.0.0
           bus info: scsi@1:0.0.0
           logical name: /dev/cdrom
           logical name: /dev/cdrw
           logical name: /dev/dvd
           logical name: /dev/dvdrw
           logical name: /dev/scd0
           logical name: /dev/sr0
           capabilities: audio cd-r cd-rw dvd dvd-r dvd-ram
           configuration: status=open
    Drive recognised

    Code:
    *-cdrom
           description: DVD-RAM writer
           product: CD/DVDW SH-S182D
           vendor: TSSTcorp
           physical id: 0.0.0
           bus info: scsi@3:0.0.0
           logical name: /dev/cdrom
           logical name: /dev/cdrw
           logical name: /dev/dvd
           logical name: /dev/dvdrw
           logical name: /dev/scd0
           logical name: /dev/sr0
           version: SB06
           capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
           configuration: ansiversion=5 status=open


    Any ideas what's happening here?
    Last edited by kwacka; May 2nd, 2010 at 10:28 AM.
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  2. #2
    Join Date
    May 2010
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    Switzerland
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    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Disappearing DVD Drive

    Same problem here.
    DVD-Drive disappears after some hours with Ubuntu 10.04LTS.
    With WindowsXP no problem.

    Attached my DMesg output.

    Can anyone solve the problem ?
    Attached Files Attached Files

  3. #3
    Join Date
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    Ubuntu 11.10 Oneiric Ocelot

    Re: Disappearing DVD Drive

    I noticed this too. Didn't happen on Karmic.
    ...

  4. #4
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    Ubuntu 10.04 Lucid Lynx

    Re: Disappearing DVD Drive

    @kwacka
    I noticed that you have a TSSTcorp-Device too. I've got a SH-S202N.
    What kind of Mainboard do you have ?
    I've got a ASROCK 4CoreDual-VSTA with VIA PT-880 Chipset.
    Maybe there is a problem with the IDE-Controller driver.

    @meho_r
    What kind of Hardware do you have ?

    Any ideas for the problem welcome.

  5. #5
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    Ubuntu 11.10 Oneiric Ocelot

    Re: Disappearing DVD Drive

    Hl-dt-st dvdram gsa-4167b

    No idea why. And, it doesn't happen regularly on my machine. I noticed this morning that DVD was just unmounted, not gone
    ...

  6. #6
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    Re: Disappearing DVD Drive

    Quote Originally Posted by Hippman View Post
    @kwacka
    I noticed that you have a TSSTcorp-Device too. I've got a SH-S202N.
    What kind of Mainboard do you have ?
    I've got a ASROCK 4CoreDual-VSTA with VIA PT-880 Chipset.
    Maybe there is a problem with the IDE-Controller driver.

    @meho_r
    What kind of Hardware do you have ?

    Any ideas for the problem welcome.
    MSI motherboard with VIA VT82C586 controllers.

    My dmesg regarding this is identical to yours, but the entry immediately before it is regarding insertion of a memory stick - is it possible that this 'bumped' the entry for /dev/sr0? I don't see how (or why) but I'll be checking it out over the next day or so.
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  7. #7
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    Re: Disappearing DVD Drive

    Also showing up in dmesg is:

    VFS: busy inodes on changed media or resized disk sr0

    Searching I found that there have been entries in launchpad about this (looked before but didn't find it) with suggestions

    1. comment out the Cd line in /etc/fstab (I only made an entry there because this was happening without a CD entry in fstab,

    2. a. sudo eject, (no entries in dmesg, tray did not open)
    b. use button to return tray,
    c. followed by cd eject -t (which gave the error: eject: CD-ROM tray close command failed: Input/output error)

    Unfortunately not convenient to reboot computer, I'll try again tomorrow.
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  8. #8
    Join Date
    Apr 2010
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    Distro
    Lubuntu 12.04 Precise Pangolin

    Re: Disappearing DVD Drive

    Quote Originally Posted by meho_r View Post
    I noticed this too. Didn't happen on Karmic.
    I couldnt actually see that problem. If so many people see this problem then it might be a problem with Lucid Lynx, but if it is not then it is just probably that your DVD reader is not running very well.
    Feel free to contact me at cuberts@gmail.com if you have any questions. Also, Irssi is RAD!~

  9. #9
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    Re: Disappearing DVD Drive

    Appears to be this bug - (not a previous one I found in Launchpad):

    LIBATA with PATA_VIA causes ATAPI PATA devices to hang with HPET enabled



    Seems to be a problem with VIA boards.
    Last edited by kwacka; May 5th, 2010 at 02:29 PM.
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  10. #10
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    Re: Disappearing DVD Drive

    One of the respondents to the lauchpad bug mentioned in my last post suggested that using (test) kernel 2.6.31 resolved the problem.

    Today update manager upgraded to kernel 2.6.32, and my drive hasn't disappeared since the upgrade.

    If its still there in 24 hours I'll mark this 'solved'.
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