3. Using the .asoundrc above prevents Mumble and YouTube in Chrome working
Mumble is a phoning program right? That asoundrc does not setup any
input device, in my examply I combine dmix for the output and the
hardware for input.
I did that because I don't need multiple input streams at the same
time, but I need multiple outputs.
On Wed, Oct 7, 2015 at 4:12 PM, Paolo Bolzoni
<paolo.bolzoni.brown@xxxxxxxxx> wrote:
> 6. I found this: "NOTE: For ALSA 1.0.9rc2 and higher you don't need to
> setup dmix for analogue output. Dmix is enabled by default for
> soundcards which don't support hardware mixing. You still need to set
> it up for digital outputs."
>
> In my experience, this is a lie.
>
> On Wed, Oct 7, 2015 at 2:13 PM, Philip Rhoades <phil@xxxxxxxxxxxxx> wrote:
>> Paolo, Anders,
>>
>>
>> On 2015-10-07 02:44, Paolo Bolzoni wrote:
>>>
>>> I use this default. It allows to select any pcm via environment variable
>>> pcm.!default {
>>> type plug
>>> slave.pcm {
>>> @func getenv
>>> vars [ ALSAPCM ]
>>> default "pcm.PCH"
>>> }
>>> }
>>>
>>> As you can see the default is pcm.PCH I told you before. But it is
>>> useful to be able to change the sound pcm with ease because some
>>> programs do not like speak with dmix and want to speak with the
>>> hardware directly. (e.g., wine)
>>>
>>> So, for that programs I use ALSAPCM=hw:PCH.
>>>
>>> But, once again, names are probably different on your system.
>>
>>
>>
>> OK, once I saw your comments about dmix I started to try and get that to
>> work - what I have found so far:
>>
>> 1. With NO .asoundrc file - only ONE mplayer instance works
>>
>> 2. Using this .asoundrc:
>>
>> pcm.!default {
>> type plug
>> slave.pcm "dmixer"
>> }
>>
>> pcm.dmixer {
>> type dmix
>> ipc_key 1024
>> slave {
>> pcm "hw:1,0"
>> period_time 0
>> period_size 1024
>> buffer_size 4096
>> rate 44100
>> }
>> bindings {
>> 0 0
>> 1 1
>> }
>> }
>>
>> ctl.dmixer {
>> type hw
>> # card 0
>> card 1
>> device 0
>> }
>>
>> I can get TWO mplayers going at the same time.
>>
>> 3. Using the .asoundrc above prevents Mumble and YouTube in Chrome working
>>
>> 4. With NO .asoundrc file and xfce4-mixer and alsamixer settings for Front
>> Mike, Front Mike Boost, Rear Mike and Rear Mike Boost ALL muted, Mumble
>> still works fine! - it looks like it is bypassing ALSA and talking directly
>> to the port or something?
>>
>> 5. It looks like dmix setups can get quite complex - more reading is
>> required I think . .
>>
>> 6. I found this: "NOTE: For ALSA 1.0.9rc2 and higher you don't need to setup
>> dmix for analogue output. Dmix is enabled by default for soundcards which
>> don't support hardware mixing. You still need to set it up for digital
>> outputs." here:
>>
>> http://alsa.opensrc.org/Dmix
>>
>> - so I'm not sure what that means for me - I am only using analogue output .
>> .
>>
>> 7. It looks like with some correct dmix parameters for custom pcms for
>> Mumble and Chrome/YouTube, I should be able to get those to work?
>>
>> 8. There is stuff about snd-aloop and asym that also might be relevant but I
>> am a bit lost now . .
>>
>> 9. It looks like these problems go back a while:
>>
>> https://bugzilla.redhat.com/show_bug.cgi?id=130593
>>
>> but my problems seems like they should be soluble by now at least - even if
>> I have to set up a custom pcm for each input source . .
>>
>> Thanks,
>>
>> Phil.
>> --
>> Philip Rhoades
>>
>> PO Box 896
>> Cowra NSW 2794
>> Australia
>> E-mail: phil@xxxxxxxxxxxxx
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