bug/request: multi-processing for CD devices

From: Max O'Shea (maxo_at_myrealbox.com)
Date: 09/06/03

  • Next message: Frederic Trudeau: "kernel oops with kernel-smp-2.4.20-20.9 (Unable to handle kernel NULL pointer dereference at virtual address 00000000)" 
    To: linux-kernel@vger.kernel.org
Date:	Sat, 6 Sep 2003 19:45:26 +0000

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    Hello,

    I don't know if this would be considered a 'bug', maybe more of a feature
    request?

    Summary: request for multi-processing for CD devices (I think the word is
    'multi-processing' - ie. so that you can play an audio CD and browse the
    audio CD using a program such as konqueror at the same time)

    Full description: At the moment, if you are playing an audio CD with one
    program and you start accessing the audio CD with another program, the music
    will stop playing.

    Keywords: audio, sound, /dev/hdc , /dev/ide0, alsa, oss

    Here's a little bit of system information if it helps:

    Kernel Version: Linux version 2.4.21-0.13mdkcustom (root@tuxmachine) (gcc
    version 3.2.2 (Mandrake Linux 9.1 3.2.2-3mdk)) #1 Sat Jul 5 12:27:17 BST 2003

    - --------------------------------------
    Processor information: processor
    : 0
    vendor_id : GenuineIntel
    cpu family : 6
    model : 6
    model name : Celeron (Mendocino)
    stepping : 5
    cpu MHz : 498.495
    cache size : 128 KB
    fdiv_bug : no
    hlt_bug : no
    f00f_bug : no
    coma_bug : no
    fpu : yes
    fpu_exception : yes
    cpuid level : 2
    wp : yes
    flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
    cmov pat pse36 mmx fxsr
    bogomips : 992.87

    - --------------------------------------
    Module information:

    ppp_deflate 4536 0 (autoclean)
    zlib_inflate 21348 0 (autoclean) [ppp_deflate]
    zlib_deflate 21624 0 (autoclean) [ppp_deflate]
    bsd_comp 5336 0 (autoclean)
    binfmt_misc 7404 1
    ide-cd 35776 1 (autoclean)
    parport_pc 27208 1 (autoclean)
    lp 8480 0 (autoclean)
    parport 36960 1 (autoclean) [parport_pc lp]
    i810 65440 23
    agpgart 43680 7 (autoclean)
    es1371 30472 0
    soundcore 6628 0 [es1371]
    ac97_codec 13576 0 [es1371]
    gameport 3412 0 [es1371]
    ppp_async 9408 1
    ppp_generic 24636 3 [ppp_deflate bsd_comp ppp_async]
    slhc 6628 0 [ppp_generic]
    af_packet 15528 0 (autoclean)
    floppy 57148 0
    eepro100 22836 1 (autoclean)
    mii 3992 0 (autoclean) [eepro100]
    nls_iso8859-15 4092 1 (autoclean)
    nls_cp850 4316 1 (autoclean)
    vfat 12780 1 (autoclean)
    fat 39224 0 (autoclean) [vfat]
    supermount 16480 3 (autoclean)
    sr_mod 17976 0
    cdrom 33920 0 [ide-cd sr_mod]
    scsimon 9824 0 (unused)
    usb-storage 78648 0
    scsi_mod 106548 3 [sr_mod scsimon usb-storage]
    usb-uhci 26220 0 (unused)
    usbcore 77760 1 [usb-storage usb-uhci]
    rtc 8412 0 (autoclean)
    ext3 59916 2
    jbd 38972 2 [ext3]

    - --------------------------------------
    Output of /proc/devices :

    Character devices:
      1 mem
      2 pty/m%d
      3 pty/s%d
      4 tts/%d
      5 cua/%d
      6 lp
      7 vcs
     10 misc
     14 sound
     29 fb
    108 ppp
    128 ptm
    136 pts/%d
    162 raw
    180 usb
    226 drm

    Block devices:
      1 ramdisk
      2 fd
      3 ide0
      9 md
     11 sr
     22 ide1

    - --------------------------------------

    Output of /proc/mounts :

    rootfs / rootfs rw 0 0
    /dev/root / ext3 rw 0 0
    none /dev devfs rw 0 0
    none /proc proc rw 0 0
    none /proc/bus/usb usbdevfs rw 0 0
    none /dev/pts devpts rw 0 0
    /dev/hda7 /home ext3 rw 0 0
    none /mnt/cdrom supermount ro 0 0
    none /mnt/cdrw supermount ro 0 0
    none /mnt/floppy supermount rw,sync 0 0
    /dev/hda1 /mnt/windows vfat rw 0 0
    none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0

    I am not subscribed to the linux-kernel list (well, I was, but after I had to
    delete 100000 messages and my email account was ready to be closed, I had to
    unsubscribe) so if you could possibly cc: me if you can be bothered to or if
    you really need to.

    Many thanks :-)

    - --Max.
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  • Next message: Frederic Trudeau: "kernel oops with kernel-smp-2.4.20-20.9 (Unable to handle kernel NULL pointer dereference at virtual address 00000000)"

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