id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc	mlocked
8408	24-bit audio support	anonymous	JYA	"Here's a patch for 32-bit audio support on NVIDIA Geforce 8300 mGPU and GT2XX cards. The patch needs more work to play nicely with other  audio configurations. In particular, encoding to Dolby Digital is desirable when 32-bit audio isn't available.

ALSA 1.0.23 must be installed for the GT2XX to work. On the NVIDIA GeForce 8300 mGPU, the channel order is in SMPTE not ALSA so a remap is needed. On Mythbuntu 9.10, the PCM buffer defaults to 64KB which isn't enough for reliable audio playback. To get a buffer of 400 ms, I suggest:

echo 512 > /proc/asound/card1/pcm7p/sub0/prealloc

"	enhancement	closed	minor	unknown	MythTV - Audio Output	Unspecified	medium	wontfix			0