At Mon, 15 Oct 2012 21:10:44 +0800, Raymond Yau wrote: > > > > > > > > > > > > > > > how about those hdmi jack and iec958 on ad1989b? > > > > > > > > > > > > On AD codecs, all digital outputs are exposed as a single cloned > > > > > > device with HDA_PCM_TYPE_SPDIF. > > > > > > > > > > how about ad1988b with nvidia codec ? > > > > > > > > Nvidia codec provides devices only with HDA_PCM_TYPE_HDMI, of course. > > > > > > > > > from user point of view , how can they differenitate hdmi jack is > > > digital > > > > > ouput and hdmi output ? > > > > > > > > The device 1 is from AD and the device 3 is from Nvidia codec, as you > > > > can see below. And this is exactly the case the conflict happens as I > > > > mentioned in the original mail. > > > > > > will your fix change the spdif of those motherboard with ad1988b which > > > have iec958 but no hdmi jack ? > > > > It won't change anything unless both SPDIF and HDMI *devices* are > > actually created. > > > > > > > > > > Which is connected to what output, you can't know exactly unless you > > > > compare the obtained ELD. The HD-audio spec isn't good enough to > > > > identify the actual output. > > > > > > it seem that there is no presence detect on this codec > > > > ELD has nothing to do with the presence detect bit. > > > > ftp://download.nvidia.com/XFree86/gpu-hdmi-audio-document/gpu-hdmi-audio.html#_examples > > 6.1.2. Chipset with 8-channel support, single stream > > This configuration is used in MCP77, MCP78, MCP79, MCP7A, and ION. > > In the case where multiple HDMI display connectors are present, the audio > stream is broadcast to all HDMI connectors at once. A single ALSA device is > exposed. > > ELD and PD information is not available on these chipsets. > > In these chipsets, the multiple 2-channel converters are aggregated by the > ALSA driver and exposed as a single 8-channel device. Some chipsets support > 2, or 8 channels (MCP77). Other chipsets support 2, 6, or 8 channels > (MCP79). > > id = 0x10de0002, .name = "MCP77/78 HDMI", .patch = patch_nvhdmi_8ch_7x }, > > does it mean that this hdmi codec support 8 channels but no ELD info ?
Right. Takashi -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/881826 Title: [Analog Devices AD1988B, Green Headphone Out, Front] Pulseaudio fails to detect card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/881826/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
