Open Sound System

Posted: **Mon Mar 04, 2013 9:29 pm**

This chip is sort-of recognized.

It understands it being an sb600 but doesn't understand the codec.

Will it be supported in the near future.

This is from lspci

Code: Select all

00:14.2 Audio device [0403]: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) [1002:4383] (rev 40)
    Subsystem: ASUSTeK Computer Inc. Device [1043:84fb]

This is from ossinfo after soundon

Code: Select all

Version info: OSS 4.2 (b 2007/201303041921) (0x00040100) GPL
Platform: Linux/x86_64 3.8.1-zen #2 ZEN SMP PREEMPT Sun Mar 3 07:26:48 CST 2013 ((none))

Number of audio devices:   0
Number of audio engines:   0
Number of mixer devices:   0


Device objects
 0: osscore0 OSS core services
 1: oss_hdaudio0 ATI HD Audio interrupts=14 (14)
    HD Audio controller ATI HD Audio
    Vendor ID    0x10024383
    Subvendor ID 0x104384fb
     Codec  0: Unknown (0x00000000)
 2: oss_usb0 USB audio core services


Mixer devices

Audio devices

Nodes
  /dev/dsp -> /dev/oss/oss_hdaudio0/pcm0
  /dev/dsp_in -> /dev/oss/oss_hdaudio0/pcm0
  /dev/dsp_out -> /dev/oss/oss_hdaudio0/pcm0
  /dev/dsp_ac3 -> /dev/oss/oss_hdaudio0/spdout0
  /dev/dsp_mmap -> /dev/oss/oss_hdaudio0/pcm0
  /dev/dsp_multich -> /dev/oss/oss_hdaudio0/pcm0

Thanks for any replies

Posted: **Mon Mar 04, 2013 11:44 pm**

Hmm.. I guess the driver isn't recognizing the id? Maybe the attached patch will help - you'll need to rebuild OSS with it though.

Posted: **Tue Mar 05, 2013 1:50 pm**

That didn't do anything and as it turns out it was something else causing a problem.

I have IOMMU enabled in the bios because I need it for virtualization.

When I turned it off the chipset was recognized immediately.

The thing is alsa works just fine with IOMMU enabled, so it's not the chip itself.

Thank you for looking into this matter and your resonse.

Posted: **Wed Mar 06, 2013 7:13 pm**

Just an FYI, I passed the kernel parameter "iommu=pt" on the grub line and sound is working again.

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