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bibi · 2019-07-13, 04:01

Hi,

My system :
- archlinux
- pulseaudio set on 5.1 HDMI (works with other players)
- latest kodi
- kodi set on PA device, 5.1 speakers, no passthrough
- a yamaha receiver

So the issue :
When i play AAC 5.1, i get 5.1 sounds ( 21:31:07.714 in the log)
When i play DTS/AC3, i get 3.0 sounds (21:32:18.879)

From what i see in the log, it switches from "Channel Layout: FL, FR, FC, LFE, SL, SR" to "Channel Layout: FL, FR" ?

Log : https://pastebin.com/uAYRdbLP

Bibi

Can someone help me ?

**fritsch** · 2019-07-13, 07:37

Why don't you read the wiki? https://kodi.wiki/view/PulseAudio#Passthrough_Mode

bibi · 2019-07-13, 13:23

Lol, why dont you read my post ^^.
I dont want passtrough, i want 5.1 pcm. And everything is configured according the wiki

**fritsch** · 2019-07-13, 14:37

I misread your "," in the above sentence, sorry for that.

Turn off adjust refreshrate and try again

Quote:2019-07-12 21:31:11.367 T:140602121381632 DEBUG: CRenderManager::Configure - change configuration. 800x600. display: 800x600. framerate: 8.00.

Is bogus.

From kodi's log all fine:

Quote:019-07-12 21:32:19.220 T:140605790590720 DEBUG: Output Device : Raven/Raven2/Fenghuang HDMI/DP Audio Controller Digital Surround 5.1 (HDMI 2)
2019-07-12 21:32:19.220 T:140605790590720 DEBUG: Sample Rate : 48000
2019-07-12 21:32:19.220 T:140605790590720 DEBUG: Sample Format : AE_FMT_FLOAT
2019-07-12 21:32:19.220 T:140605790590720 DEBUG: Channel Count : 6
2019-07-12 21:32:19.220 T:140605790590720 DEBUG: Channel Layout: FL, FR, FC, LFE, SL, SR
2019-07-12 21:32:19.220 T:140605790590720 DEBUG: Frames : 2400
2019-07-12 21:32:19.220 T:140605790590720 DEBUG: Frame Size : 24
2019-07-12 21:32:19.222 T:140605782198016 DEBUG: Sink changed

Sink does what it should. start pulseaudio with debugging -vvv and see what you get. Other player for sure don't refreshrate switching - I think that while switching PA reconfigures the device and routes your stuff somewhere else.

bibi · 2019-07-16, 02:40

It seems that enabling enable-remixing in pulseaudio settings made it works again (which is strange behavior)

Bibi

**fritsch** · 2019-07-16, 07:41

Could you please check your pulseaudio log? If you need remixing then it means that it finds a very odd layout or something, so that it does not cope with kodi's standard mapping. This can be fixed by changing your PA config to include the channel configuration.

bibi · 2019-07-17, 01:21

Ok, will try and report back.
Currently familly uses the system.

bibi · 2019-07-24, 01:51

Hi,

I didnt had time to test further, but i find out that if i set output to "Fixe", it works, where "best match" or "optimised" doesnt work (with enable-remixing=no)

Bibi

**fritsch** · 2019-07-24, 15:32

I cannot help you without a pulse log. If you don't allow PA to remix then make sure it has a proper speaker mapping.

bibi · 2019-07-24, 20:46

With fixe :
kodi log : https://pastebin.com/7dUVirQ2
pulse log : https://pastebin.com/8VKKm6Sg

With optimised :
kodi log : https://pastebin.com/ceJvKZf5
pulse log : https://pastebin.com/ESE234ye

**fritsch** · 2019-07-25, 18:53

Quote:juil. 24 13:57:56 bibi-server pulseaudio[1114]: I: [pulseaudio] sink-input.c: Created input 3 "kodi audio stream" on alsa_output.pci-0000_0b_00.1.hdmi-surround-extra1 with sample spec float32le 6ch 48000Hz and channel map front-left,front-right,front-center,lfe,side-left,side-right

vs

Quote:juil. 24 13:45:21 bibi-server pulseaudio[1165]: I: [pulseaudio] sink-input.c: Created input 3 "kodi audio stream" on alsa_output.pci-0000_0b_00.1.hdmi-surround-extra1 with sample spec float32le 6ch 48000Hz and channel map front-left,front-right,front-center,lfe,rear-left,rear-right

The problem is: The original mapping has SL SR but your sink in pulse has RL, RR only. This is why the remapping ight only output 4 channels.

Check this out:

Upmixing can now be disabled without bad side effects
By default, PulseAudio will play a stereo stream to all speakers (except subwoofer) of a surround system. Many people don't like this. It has been possible to disable all remixing by setting "enable-remixing = no" in daemon.conf, but that breaks other use cases where remixing is useful (perhaps the most silly breakage is that mono streams don't play at all, because the system doesn't have a dedicated "mono speaker").
Now it's possible to leave remixing enabled, and only disable (most) upmixing by setting "remixing-use-all-sink-channels = no" in daemon.conf. Mono streams will still be upmixed to front-left, front-right and center channels.

See also: https://github.com/xbmc/xbmc/blob/master...E.cpp#L634

In short, don't turn remix off, but turn off remixing-use-all-sink-channels

**fritsch** · 2019-07-25, 18:55

You could also look into channel-map in your pulseaudio config to fixate it to e.g. channel-map = front-left,front-right,rear-left,rear-right,front-center,lfe take care with the order.

bibi · (This post was last modified: 2019-07-26, 21:41 by bibi.)

Turning off remixing-use-all-sink-channels did the trick, even if i dont understand what it does ^^.

Thanks

Bibi