Dominique Dumont wrote:
Bart de Boer <bart@xxxxxxxxxxxx> writes:
It seems I may have cheered too soon. Yes, I am able to get
bitperfect 44.1 kHz sound and bitperfect 48 kHz sound (with and
without AC3). Mplayer is somehow able to trigger the system into 48
kHz after listening to 44.1 kHz material. However, after the system
is switched to 48 kHz, MythMusic is *not* able to switch the system
back to 44.1 kHz resulting in MythMusic not producing any audio
anymore. :(
I found a way to trigger the system back into 44.1 kHz mode by going
into Ubuntu (8.04) Sound Preferences and play the test sound through
"Intel ICH5 - IEC958". I'll hear something click in my
receiver. After this MythMusic works fine again producing bitperfect
44.1 kHz audio. :) I don't understand why this happens.
This reminds me of a bug I found within the more recent version of
your chip (on ALC883).
To switch frequency (or switch to raw dolby digital), the
iec958/spidif output must be switched off before changing the
stream. On snd_hda_intel driver, this could only be controlled within
the driver. I know that this fix was included by Takashi Iwai on
snd_hda_intel. It may need to be ported to the driver you use.
HTH
That sounds plausible. :) I use the via82xx driver. Should I post my
case in the alsa-devel list?
If anyone knows any workarounds I'd like to know about them too. :)
Thanx,
Bart
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