The kernel ALSA driver needs a patch applied to make audio-over-HDMI operate correctly on most supported GPUs.
The exact patch is available at http://git.alsa-project.org/?p=alsa-kernel.git;a=commitdiff;h=4289bc9c818ece46f8034616b232caaef4622984
It'd be great if this patch could be included in the standard Fedora kernel(s) for any/all recent or supported distro versions.
Note 1: I believe only the nvidia driver (not nv nor nouveau) support setting up audio-over-HDMI.
Note 2: Very recent GPUs (Fermi class) are not yet supported by the driver. A second patch will be forthcoming for this at some point in time, but we have to validate operation under Linux before releasing this.
Note: I also filed this against RHEL as bug 619877. I assume filing against
both Red Hat and Fedora separately makes sense? If not, please do let me know.
This is also in 22.214.171.124-rc1
*** Bug 610873 has been marked as a duplicate of this bug. ***
A second patch is required to support various new GPUs in the ALSA driver:
kernel-126.96.36.199-37.fc13 has been submitted as an update for Fedora 13.
One note: 188.8.131.52 only includes the first of those two patches; I imagine the 2nd isn't in that new package?
kernel-184.108.40.206-37.fc13 has been pushed to the Fedora 13 testing repository. If problems still persist, please make note of it in this bug report.
If you want to test the update, you can install it with
su -c 'yum --enablerepo=updates-testing update kernel'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/kernel-220.127.116.11-37.fc13
kernel-18.104.22.168-47.fc13 has been submitted as an update for Fedora 13.
kernel-22.214.171.124-47.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.