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Hardware involved: Intel iMac 24 running Zorin OS 5 booted from the live CD Dell desktop (11 years old) Aiwa portable radio circa 1980 When I am booted into my ...
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  1. #1
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    Recording audio on an iMac


    Hardware involved:

    Intel iMac 24 running Zorin OS 5 booted from the live CD
    Dell desktop (11 years old)
    Aiwa portable radio circa 1980

    When I am booted into my Mac OS (currently Lion), recording from the radio works well. Also works well on the Dell desktop. I have a cable running from the radio into my iMac and into the Dell desktop via a Y connector.

    When I boot into Zorin from the live CD or even when I was dual booting from Linux and my Mac OS, The Dell desktop was still able to record from the radio. No such luck from the iMac. Is there something in the iMac that is not compatible with Linux (audio drivers etc...)? Do I have to reset the Sound settings?

    What information should I post to this thread that will help me out?

  2. #2
    Linux Guru Rubberman's Avatar
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    Quote Originally Posted by rmcellig View Post
    Hardware involved:

    Intel iMac 24 running Zorin OS 5 booted from the live CD
    Dell desktop (11 years old)
    Aiwa portable radio circa 1980

    When I am booted into my Mac OS (currently Lion), recording from the radio works well. Also works well on the Dell desktop. I have a cable running from the radio into my iMac and into the Dell desktop via a Y connector.

    When I boot into Zorin from the live CD or even when I was dual booting from Linux and my Mac OS, The Dell desktop was still able to record from the radio. No such luck from the iMac. Is there something in the iMac that is not compatible with Linux (audio drivers etc...)? Do I have to reset the Sound settings?

    What information should I post to this thread that will help me out?
    The drivers would be a good guess. What do the commands "lspci" and "lsusb" show when you are running Linux on the iMac?
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

  3. #3
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    Code:
    live@live:~$ lspci
    00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
    00:01.0 PCI bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express PCI Express Root Port (rev 03)
    00:07.0 Performance counters: Intel Corporation Device 27a3 (rev 03)
    00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
    00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02)
    00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 02)
    00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 02)
    00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 02)
    00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 02)
    00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 02)
    00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 02)
    00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
    00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
    00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02)
    00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA IDE Controller (rev 02)
    00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 02)
    01:00.0 VGA compatible controller: nVidia Corporation G73 [GeForce 7300 GT] (rev a1)
    02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8053 PCI-E Gigabit Ethernet Controller (rev 22)
    03:00.0 Network controller: Broadcom Corporation BCM4321 802.11a/b/g/n (rev 01)
    04:03.0 FireWire (IEEE 1394): Texas Instruments TSB82AA2 IEEE-1394b Link Layer Controller (rev 01)
    live@live:~$

    Code:
    live@live:~$ lsusb
    Bus 005 Device 004: ID 05ac:8206 Apple, Inc. Bluetooth HCI
    Bus 005 Device 003: ID 05ac:8240 Apple, Inc. IR Receiver [built-in]
    Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 003 Device 004: ID 05ac:020b Apple, Inc. Pro Keyboard [Mitsumi, A1048/US layout]
    Bus 003 Device 003: ID 05ac:0304 Apple, Inc. Optical USB Mouse [Mitsumi]
    Bus 003 Device 002: ID 05ac:1003 Apple, Inc. Hub in Pro Keyboard [Mitsumi, A1048]
    Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 001 Device 010: ID 0bc2:2120 Seagate RSS LLC 
    Bus 001 Device 009: ID 05e3:0606 Genesys Logic, Inc. USB 2.0 Hub / D-Link DUB-H4 USB 2.0 Hub
    Bus 001 Device 008: ID 0bc2:5021 Seagate RSS LLC 
    Bus 001 Device 007: ID 0bc2:2120 Seagate RSS LLC 
    Bus 001 Device 004: ID 05ac:8501 Apple, Inc. Built-in iSight [Micron]
    Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    live@live:~$

  4. #4
    Linux Guru Rubberman's Avatar
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    Well, this is an Intel audio controller. I'm not familiar with the Zorin distribution. What kernel is it running (command "uname -a"), and what is the output of the command "lsmod"?
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

  5. #5
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    I am booting in from the Zorin 5.1 Live CD.

    Code:
    live@live:~$ uname -a
    Linux live 2.6.38-11-generic #48-Ubuntu SMP Fri Jul 29 19:05:14 UTC 2011 i686 i686 i386 GNU/Linux
    live@live:~$ lsmod
    Module                  Size  Used by
    hfsplus                79383  3 
    binfmt_misc            13213  1 
    parport_pc             32111  0 
    ppdev                  12849  0 
    dm_crypt               22463  0 
    snd_hda_codec_realtek   255882  1 
    snd_hda_intel          24113  2 
    snd_hda_codec          90901  2 snd_hda_codec_realtek,snd_hda_intel
    snd_hwdep              13274  1 snd_hda_codec
    snd_pcm                80042  2 snd_hda_intel,snd_hda_codec
    snd_seq_midi           13132  0 
    rfcomm                 38125  8 
    snd_rawmidi            25269  1 snd_seq_midi
    sco                    17827  2 
    bnep                   17785  2 
    snd_seq_midi_event     14475  1 snd_seq_midi
    l2cap                  48656  16 rfcomm,bnep
    snd_seq                51291  2 snd_seq_midi,snd_seq_midi_event
    snd_timer              28659  2 snd_pcm,snd_seq
    snd_seq_device         14110  3 snd_seq_midi,snd_rawmidi,snd_seq
    arc4                   12473  2 
    snd                    55295  13 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
    b43                   296610  0 
    applesmc               19020  0 
    btusb                  18160  2 
    soundcore              12600  1 snd
    mac80211              257001  1 b43
    bluetooth              65493  9 rfcomm,sco,bnep,l2cap,btusb
    input_polldev          13735  1 applesmc
    cfg80211              156212  2 b43,mac80211
    snd_page_alloc         14073  2 snd_hda_intel,snd_pcm
    lp                     13349  0 
    parport                36746  3 parport_pc,ppdev,lp
    squashfs               35973  1 
    aufs                  159344  4852 
    nls_utf8               12493  4 
    isofs                  39571  1 
    nls_iso8859_1          12617  0 
    nls_cp437              12751  0 
    vfat                   17335  0 
    fat                    55505  1 vfat
    dm_raid45              88410  0 
    xor                    21860  1 dm_raid45
    btrfs                 527388  0 
    zlib_deflate           26594  1 btrfs
    libcrc32c              12543  1 btrfs
    hid_apple              13124  0 
    usb_storage            43946  3 
    uas                    17676  0 
    usbhid                 41704  0 
    hid                    77084  2 hid_apple,usbhid
    nouveau               621970  2 
    ttm                    65184  1 nouveau
    drm_kms_helper         40745  1 nouveau
    drm                   184164  4 nouveau,ttm,drm_kms_helper
    firewire_ohci          31504  0 
    i2c_algo_bit           13184  1 nouveau
    firewire_core          56138  1 firewire_ohci
    sky2                   49172  0 
    crc_itu_t              12627  1 firewire_core
    video                  18951  1 nouveau
    ssb                    45942  1 b43
    live@live:~$

  6. #6
    Linux Guru Rubberman's Avatar
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    Ok. Pretty standard stuff. Seems that Zorin is based on Ubuntu. Open the sound manager on the menu dock (right click on the sound icon and select "Preferences"). You should see some tabs including "Hardware", "Input", and "Output". Look at the hardware and the input tabs to see what hardware and input device is selected.
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

  7. #7
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    When I select Microphone in the input tab option, that works fine. I did this just to make sure the input was working. When i select Analog input or Analog Line-In, it still doesn't work. I even tried when booted in Puppy Linux 5.2.8 with the same results.

    For some reason I can't attach the screenshots I took even though I am logged into the Zorin forum and I select Manage Attachments.

  8. #8
    Linux Guru Rubberman's Avatar
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    Most of the time, the built-in mic is digital. If you are having trouble with the analog input, that may be a problem with the Linux audio driver not having the correct A/D conversion code for this hardware. Since I haven't tried running Linux on iMac hardware, I can't say for sure.
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

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