Hi :)
for Natty it's the same as it is for Maverick. My Envy24 sound card
doesn't work, even after editing the ICE1712.conf, that btw. now differs
by default a little bit to older versions of this file. I only added
everything that is marked by ######################.
I won't try to fix it by pseudo-disabling PA as I did for Maverick,
because today my dealer sent the RME HDSPe AIO card, hence I should get
it tomorrow morning and using my two Envy24 cards for MIDI should work
without any tweaks.
Anyway, this needs improvement.
spinymouse@natty:~$
diff /mnt/maverick/usr/share/alsa/cards/ICE1712.conf
/usr/share/alsa/cards/ICE1712.conf
35,40c35,57
< type route
< ttable.0.0 1
< ttable.1.1 1
< slave.pcm {
< type hw
< card $CARD
---
> type asym
> playback.pcm {
> type route
> ttable.0.0 1
> ttable.1.1 1
> slave.pcm {
> type hw
> card $CARD
> }
> #### fix PA issue ####
> slave.format S32_LE
> ######################
> slave.channels 10
> }
> capture.pcm {
> type route
> ttable.0.0 1
> ttable.1.1 1
> slave.pcm {
> type hw
> card $CARD
> }
> slave.channels 12
42,45d58
< #### fix PA issue ####
< slave.format S32_LE
< slave.channels 10
< ######################
63a77
> slave.channels 10
85a100
> slave.channels 10
OT:
I'll build a kernel-rt. I guess test scenarios like this are
meaningless: https://wiki.ubuntu.com/RealTime
On-board HDA Intel at 44.1KHz, 64 frames/period, 2 periods/buffer = 2.9
ms latency? This is what a really good card is able to do when using a
kernel-rt. Never ever an integrated HDA surround sound device has the
capability to do this duplex for a real audio session, with or without a
kernel-rt. I often read about 3 periods/buffer and many issues.
The fix latency anyway is completely irrelevant for most usages. Jitter
and sync for the channels are important.
Cheers!
Ralf
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