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Thread: Cannot mount a CD-ROM

  1. #1
    Join Date
    Sep 2008
    Location
    St Louis, MO USA
    Posts
    398

    Default Cannot mount a CD-ROM

    I just installed openSUSE 11.1. I was trying to burn a CD on the new system, but neither K3b or Brasero would recognize that I had a disc inserted. I tried dmesg and came up with the following output:

    cdrom: This disc doesn't have any tracks I recognize!
    end_request: I/O error, dev sr0, sector 0
    Buffer I/O error on device sr0, logical block 0
    end_request: I/O error, dev sr0, sector 0
    Buffer I/O error on device sr0, logical block 0

    This is with a blank DVD+R in the drive. Inserting a blank CD gives the same message.
    Dell Inspiron 530 - C2Q@2.4Ghz; 6GB RAM; openSUSE 11.2 x86_64; KDE 4.4.1
    Dell Inspiron 1440 - C2D@2.2Ghz; 4GB RAM; openSUSE 11.2 x86; KDE 4.4.1
    Dell Latitude D531 - AMD Turion X2 64@2.0Ghz; 2GB RAM; Linux Mint 8

  2. #2
    Join Date
    Sep 2008
    Location
    St Louis, MO USA
    Posts
    398

    Default Re: Cannot mount a CD-ROM

    Anyone have a few hints? I really need my CD drive...
    Dell Inspiron 530 - C2Q@2.4Ghz; 6GB RAM; openSUSE 11.2 x86_64; KDE 4.4.1
    Dell Inspiron 1440 - C2D@2.2Ghz; 4GB RAM; openSUSE 11.2 x86; KDE 4.4.1
    Dell Latitude D531 - AMD Turion X2 64@2.0Ghz; 2GB RAM; Linux Mint 8

  3. #3
    GatesBuster NNTP User

    Default Re: Cannot mount a CD-ROM

    Hi,

    same problem here: can't write a CD because I can't get access to the drive(s).

    Not a clean trick, but it works: login as root and k3b does the job!

    Still searching for a clean configuration...

  4. #4

    Default Re: Cannot mount a CD-ROM

    I had exactly the same problem - neither K3b nor Brasero could see my cd/dvd drive, which obviously is working because that's how I did the installation. After looking over the openSUSE Wiki, openSUSE News and openSUSE forums last night and not finding any information, I've gone back to Fedora 10. Too bad.

  5. #5
    Join Date
    Sep 2008
    Location
    St Louis, MO USA
    Posts
    398

    Default Re: Cannot mount a CD-ROM

    Hmm. This sounds like a bug. I never had this problem with 11.0.

    Any of you linux wizards out there care to drop a line?
    Dell Inspiron 530 - C2Q@2.4Ghz; 6GB RAM; openSUSE 11.2 x86_64; KDE 4.4.1
    Dell Inspiron 1440 - C2D@2.2Ghz; 4GB RAM; openSUSE 11.2 x86; KDE 4.4.1
    Dell Latitude D531 - AMD Turion X2 64@2.0Ghz; 2GB RAM; Linux Mint 8

  6. #6
    Join Date
    Sep 2008
    Location
    St Louis, MO USA
    Posts
    398

    Default Re: Cannot mount a CD-ROM

    Just tried running K3b as root, and it works fine. So this defintely sounds like a permission problem.
    Dell Inspiron 530 - C2Q@2.4Ghz; 6GB RAM; openSUSE 11.2 x86_64; KDE 4.4.1
    Dell Inspiron 1440 - C2D@2.2Ghz; 4GB RAM; openSUSE 11.2 x86; KDE 4.4.1
    Dell Latitude D531 - AMD Turion X2 64@2.0Ghz; 2GB RAM; Linux Mint 8

  7. #7
    Join Date
    Sep 2008
    Location
    St Louis, MO USA
    Posts
    398

    Default Re: Cannot mount a CD-ROM

    Well, I just tried it in GNOME, and it works fine. So apparently it's a KDE problem. In which case, I deserve it, as I am running KDE 4.2 beta (and lovin it). What desktop are you guys using?

    I am going to post on the KDE forums and see what comes up.
    Dell Inspiron 530 - C2Q@2.4Ghz; 6GB RAM; openSUSE 11.2 x86_64; KDE 4.4.1
    Dell Inspiron 1440 - C2D@2.2Ghz; 4GB RAM; openSUSE 11.2 x86; KDE 4.4.1
    Dell Latitude D531 - AMD Turion X2 64@2.0Ghz; 2GB RAM; Linux Mint 8

  8. #8
    Join Date
    Sep 2008
    Location
    St Louis, MO USA
    Posts
    398

    Default Re: Cannot mount a CD-ROM

    Well, one of the folks at the KDE forum asked me if I my user account was in the cdrom group. It wasn't, and adding it seemed to solve the issue. So I'm one happy penguin!
    Dell Inspiron 530 - C2Q@2.4Ghz; 6GB RAM; openSUSE 11.2 x86_64; KDE 4.4.1
    Dell Inspiron 1440 - C2D@2.2Ghz; 4GB RAM; openSUSE 11.2 x86; KDE 4.4.1
    Dell Latitude D531 - AMD Turion X2 64@2.0Ghz; 2GB RAM; Linux Mint 8

  9. #9
    GatesBuster NNTP User

    Default Re: Cannot mount a CD-ROM

    Hi,

    I'm using OpenSUSE 11.1, KDE 4.1.3, user account in users, cdrom. I restarted my PC after every change: starting k3b both of my burning-drives are o.k., putting in a clean cd to write, there flashes the start-button, then the drive disappears!

    Today, after a cold-boot, k3b works! But there is still a little bug: putting in a clean cd to write keeps k3b in the status that it doesn't find a medium to write on. Taking out an old recorded DVD of my second burning-device, putting in the same (!) clean cd and k3b works...

    besides: graveman, a very simple burning-program, works out of the box :-)

    anyway: tux keeps burning!

  10. #10
    glassmonkey NNTP User

    Default Re: Cannot mount a CD-ROM

    I have this issue under SuSE 11.1 and KDE 4.1.3
    the block device sr0 (which is what the dvd and cd links point to) has the permissions set to allow root and the disk group to have access. everyone else is denied access (others group).
    logged on as root and changed the permission. logged out of root and back in as user. had correct permissions.
    rebooted and the permissions reverted to disallow access to others.
    Rebooted and logged on as user under Gnome. Had correct rights.

    However, I cannot locate the script that controls the rights to /dev/sr0

    Also cannot get a script to work that changes the rights on log on.

    Any further information is most welcome

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