Nouveau - Mar 2013 - [Bug 62305] New: No HDMI Audio out (pass-thru) on Geforce 7600 Go

https://bugs.freedesktop.org/show_bug.cgi?id=62305

          Priority: medium
            Bug ID: 62305
          Assignee: nouveau at lists.freedesktop.org
           Summary: No HDMI Audio out (pass-thru) on Geforce 7600 Go
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: doug at nostar.net
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

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--- Comment #1 from Doug McLain <doug at nostar.net> ---
I have an hp dv9347cl laptop with a Geforce Go 7600.  HDMI audio out works in
windows using an older nvidia driver.  It does not work in linux using the
nouveau driver.  I also have a Geforce 9400GT card in my desktop with the SPDIF
jumpers, connected to my MB, that works great in Linux using the Nouveau.  This
tells me that there is at least the potential for HDMI Audio pass-thru to work
correctly on my laptop.

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Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|No HDMI Audio out           |[NV4B] No HDMI Audio out
                   |(pass-thru) on Geforce 7600 |(pass-thru) on Geforce 7600
                   |Go                          |Go

--- Comment #2 from Ilia Mirkin <imirkin at alum.mit.edu> ---
There is only HDMI audio support starting with NV84. If you're interested in
helping to get this to work, please collect a mmiotrace of the nvidia
proprietary driver that captures a plug and unplug HDMI event. (i.e. start it
without hdmi, then plug hdmi in, then unplug it.) Please be sure to add trace
markers (echo stuff > /sys/kernel/debug/tracing/trace_marker) before/after
you
perform each of those things. I guess it wouldn't hurt to also try playing
something over HDMI, but I doubt that anything actually happens when you do
that. [Please make sure it's an audio-only thing, as video would rather
complicate the trace.]

There are some instructions on how to do an mmiotrace at
https://wiki.ubuntu.com/X/MMIOTracing

The resulting trace file should be 50-100MB, so please compress it before
uploading. (And if it's just a few KB, you did something wrong.)

Also upload a copy of your vbios (/sys/kernel/debug/dri/0/vbios.rom if
you're
running nouveau).

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Pierre Moreau <pierre.morrow at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #3 from Pierre Moreau <pierre.morrow at free.fr> ---
I'm not sure if HDMI audio support was added for NV4B, but it might be worth
trying a recent kernel (3.18, 3.19-rc4).
If it still doesn't work, please provide the traces Ilia asked for.

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Martin Peres <martin.peres at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |MOVED
             Status|NEEDINFO                    |RESOLVED

--- Comment #4 from Martin Peres <martin.peres at free.fr> ---
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