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    SubjectRe: ALSA sound/pci/hda/hda_intel.c:2624: no codecs found
    At Wed, 27 Oct 2010 17:53:52 +0530,
    Jaswinder Singh wrote:
    >
    > On Wed, Oct 27, 2010 at 1:14 PM, Takashi Iwai <tiwai@suse.de> wrote:
    > > At Wed, 27 Oct 2010 12:57:35 +0530,
    > > Jaswinder Singh wrote:
    > >>
    > >>
    > >> [    7.854510] IOAPIC[0]: Set routing entry (8-22 -> 0xa9 -> IRQ 22
    > >> Mode:1 Active:1)
    > >> [    7.854515] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 22 (level,
    > >> low) -> IRQ 22
    > >> [    7.854569] HDA Intel 0000:00:1b.0: irq 47 for MSI/MSI-X
    > >> [    7.854589] HDA Intel 0000:00:1b.0: setting latency timer to 64
    > >> [    7.854593] ALSA sound/pci/hda/hda_intel.c:2529: chipset global
    > >> capabilities = 0x4401
    > >> [    7.859681] ALSA sound/pci/hda/hda_intel.c:913: codec_mask = 0x0
    > >> [    7.859687] ALSA sound/pci/hda/hda_intel.c:2624: no codecs found!
    > >
    > > So, the hardware (BIOS) tells no codec is connected to this bus.
    > >
    >
    > Hmm, very strange, but In BIOS sound is enable. How is this possible.

    No idea. Any jumpers?


    > > As a last resort, you can try to load with probe_mask=0x10f.  This
    > > will probe the codec chips forcibly no matter whether it's present or
    > > not.
    > >
    >
    > # /sbin/insmod sound/pci/hda/snd-hda-intel.ko probe_mask=0x10f
    >
    > [ 536.851846] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 22 (level,
    > low) -> IRQ 22
    > [ 536.851849] hda_intel: codec_mask forced to 0xf
    > [ 536.851908] HDA Intel 0000:00:1b.0: irq 47 for MSI/MSI-X
    > [ 536.851927] HDA Intel 0000:00:1b.0: setting latency timer to 64
    > [ 536.851932] ALSA sound/pci/hda/hda_intel.c:2529: chipset global
    > capabilities = 0x4401
    > [ 537.857929] ALSA sound/pci/hda/hda_intel.c:706: azx_get_response
    > timeout, polling the codec once: last cmd=0x000f0000
    > [ 538.856516] ALSA sound/pci/hda/hda_intel.c:706: azx_get_response
    > timeout, polling the codec once: last cmd=0x000f0000
    > [ 539.855096] ALSA sound/pci/hda/hda_intel.c:716: azx_get_response
    > timeout, switching to polling mode: last cmd=0x000f0000
    > [ 540.853681] ALSA sound/pci/hda/hda_intel.c:724: No response from
    > codec, disabling MSI: last cmd=0x000f0000
    > [ 541.852269] ALSA sound/pci/hda/hda_intel.c:1429: Codec #0 probe
    > error; disabling it...
    > [ 542.858837] ALSA sound/pci/hda/hda_intel.c:1429: Codec #1 probe
    > error; disabling it...
    > [ 543.865396] ALSA sound/pci/hda/hda_intel.c:1429: Codec #2 probe
    > error; disabling it...
    > [ 544.871963] ALSA sound/pci/hda/hda_intel.c:1429: Codec #3 probe
    > error; disabling it...

    So, the driver tries to probe all slots, but in vain.


    Takashi
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