Re: /dev/cdrom question

From: Jonathan Berry (berryja_at_gmail.com)
Date: 03/19/05

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    Date: Sat, 19 Mar 2005 16:05:31 -0600
To: For users of Fedora Core releases <fedora-list@redhat.com>

    On Sat, 19 Mar 2005 20:35:38 +0000, C Toews <toewsc@hotmail.com> wrote:
    >
    > Jonathan,
    >
    > Thanks very much for the help. Your description of the device files was
    > very helpful. I followed the directions on the links you gave me and
    > succeeded in generating a symbolic link between /dev/cdrom and /dev/hdc.
    > When I crank up the cd player (I'm using gnome-cd), it now at least looks
    > like its playing the disc (i.e. it shows the tracks, and when I push play,
    > the seconds tick by, etc.)

    Cool, that is progress.

    > Still no sound, unfortunately. I've tried messing with the volume settings,
    > all to no avail. I know its not a matter of a missing cable, since audio
    > plays fine on the Windows side (I'm running this on a laptop, by the way,
    > for whatever its worth.) I'm a little confused about which volume settings

    Well, there are two ways of playing audio CDs. On a desktop system,
    there is the cable that goes from the CD drive to the soundcard and
    then there is the IDE cable. I do not know if there is an equivalent
    cable to the former in a laptop, but either way, you certainly cannot
    add it then : ). Playing through one is analog (the soundcard cable)
    and through the other is digital (the IDE cable).

    > to adjust: there seem to be three volume settings of relevance, one being
    > the volume bar on the player itself, one being the volume icon in the tray
    > (I'm running gnome) and the third being the large sound panel with lots of
    > different option I can access from the sound and video menu. I've tried

    Right click on the volume icon in the tray and click Open Volume
    Control. This will bring up the gnome-volume-control program that
    can contol all of the volumes in the system. The other simply modify
    one of the different levels available there. The CD sliders should
    control the analog CD audio output.

    > unmuting everything via the latter and putting all other volume settings on
    > all other volume bars up to max. Of course, with so many volume bars, it is
    > hard to know if there might not be some particular combination of ups,
    > downs, mutings, etc. that leads to sounds, but this seems to me improbable.
    > I do get sound when I do the sound check, so the system knows about the
    > sound card. The difficulty seems to be connecting the sound card to the
    > player. I've tried other players (in particular, Grip) with the same silent
    > results.... ;-(

    Can you play sound files on the hard disk? Like MP3s? You'll need to
    grab an MP3 plugin from Livna or Dag or some other repo since RedHat
    cannot ship them with Fedora because of legal issues.

    > Argh. I'll keep plugging away and see what happens. Thanks again for your
    > help--if you have any more ideas, I'd be very pleased to hear them.
    >
    > Best,
    > Carl

    Try using xmms to play the CD. If you do not have it run "yum install
    xmms" as root. It will show up as Menu->Sound & Video->Audio Player
    in the gnome menu. Right click on the player and select
    Options->Preferences. In input plugins, select the CD Audio Player
    and click the Configure button. Under Drive 1 tab you should put
    Device: /dev/cdrom (assuming you have the symlink) and under
    Directory: you should put the mount point. Run "ls /media/" and "cat
    /etc/fstab" to figure out what to put (it is /media/cdrecorder in my
    system). Click Check drive... button and if you get OK on both, the
    it is setup correctly. Click Ok to dismiss the dialog. Make sure
    your Output pligin is set to where you can play and hear sound files.
    There are wav files in /usr/share/sounds/ if you need some to try.
    Click Ok to close the Prefs dialog. Right click on xmms again and
    select Play Directory. Navigate to the mount point you found before
    (/media/something) and click Ok. If you cannot hear sound (make sure
    both PCM and CD in your volume control are unmuted and turned up), go
    back to the CD Audio Player Configuration dialog and change the Play
    mode: from Analog to Digital audio extraction. I would think the
    digital should work. Let us know how it goes.

    Jonathan 

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