At Sat, 16 Feb 2013 18:22:25 -0600, Shawn Bohrer wrote:

On Mon, Jan 28, 2013 at 08:52:05PM -0600, Shawn Bohrer wrote:

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On Mon, Jan 28, 2013 at 09:56:33AM +0100, Takashi Iwai wrote:

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At Sun, 27 Jan 2013 19:18:27 -0600, Shawn Bohrer wrote:

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Hi Takashi,

I recently updated my HTPC from 3.6.11 to 3.7.2 and this caused my RL and FC channels to swap, and my RR and LFE channels to swap for PCM audio. Doing a git bisect identified d45e6889ee69456a4d5b1bbb32252f460cd48fa9 "ALSA: hda - Provide the proper channel mapping for generic HDMI driver" as the commit that caused my channels to swap. The commit doesn't revert cleanly on 3.7.4, and I haven't really looked to see what the correct fix might be.

Some info that may be relevant, the sound card is a:

00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)

The machine is running Fedora 18 and audio goes over HDMI to a 5.1 receiver. I'm not really sure what other info you might need, but let me know if you need something else or have any patches you would like me to test.

OK, it's the first time to get a bug report about this. Could you tell me how did you test it (i.e. which application, which sound backend)? Can you confirm that it's reproduced via speaker-test program in alsa-utils package?

I originally noticed the problem when all of the dialog started coming out of my rear left speaker in MythTV after the kernel update. Then I started using the Gnome 3 sound configuration gui in the system settings which has a speaker test and I assume is using pulseaudio. Running 'speaker-test -c6 -l1 -twav' also reproduces the problem.

For reference here are the versions of the various packages that I'm running:

alsa-utils-1.0.26-1.fc18.x86_64 alsa-firmware-1.0.25-2.fc18.noarch alsa-plugins-pulseaudio-1.0.26-2.fc18.x86_64 alsa-lib-devel-1.0.26-2.fc18.x86_64 alsa-lib-1.0.26-2.fc18.x86_64 alsa-tools-firmware-1.0.26.1-1.fc18.x86_64 pulseaudio-gdm-hooks-2.1-5.fc18.x86_64 pulseaudio-libs-2.1-5.fc18.x86_64 pulseaudio-libs-glib2-2.1-5.fc18.x86_64 pulseaudio-module-x11-2.1-5.fc18.x86_64 pulseaudio-module-bluetooth-2.1-5.fc18.x86_64 pulseaudio-2.1-5.fc18.x86_64 pulseaudio-utils-2.1-5.fc18.x86_64

Hi Takashi,

Any updates on this issue? I'd really like to see this issue fixed and am happy to help in any way I can. Until this gets fixed I'm stuck on a 3.6.* kernel.

There is one fix in sound git tree regarding the HDMI channel map, but it's queued for 3.9 kernel (then backported to stable tree). Try sound.git tree or wait for a while until the upstream merge process above is done.

Takashi