Is there an open bug for this? On Wed, Dec 26, 2018, 6:41 PM Alexander E. Patrakov <[email protected]> wrote:
> David Davidović <[email protected]>: > > > > Hi, > > > > I'm running a system-wide PulseAudio instance on a headless box > connected to my speaker system. The sink is broadcast via Zeroconf and I > use it to play music and movies via WiFi from my laptop. The headless box > is connected to the WiFi router via a wired connection. > > > > Unfortunately, every couple of minutes or so, the sound stutters for a > short time, then returns to normal. > > > > Does anyone have any suggestions as to how to debug the source of these > issues? My best bet is WiFi latency. I tried increasing the buffer size > (via default-fragments and default-fragment-size-msec) on both the client > and server machine but I haven't seen any considerable improvement. The > actual network packets seem to always be around 1.5K in size, which would > be around 4ms of uncompressed sound with 32-bit stereo samples at 44.1kHz, > and that's without any overhead. If my calculation is true, this would > explain the stuttering, as the network latency towards the machine is at a > baseline of ~2ms but can spike sometimes due to nature of WiFi. > > > > Packets are sent in advance, and WiFi cannot allow for bigger packets > anyway. > > > I'd be happy if there was a way to e.g. tell the native-protocol-tcp > module to buffer more of the audio and play it, as I don't mind the > increased latency; I just want to get rid of the stuttering and all > applications I use manage PulseAudio latency compensation quite well. > > You can't. It's the media player application who requests buffering > and specifies the latency. However, if pavucontrol is running, the > latency is capped to something like 20 ms, due to the misguided design > decision that monitor sinks should monitor what is written right now > (not what is playing right now). > > What would help is a "pactl list sinks" on both ends while music is > playing and pavucontrol is not running. > > > Has anyone else had this issue and resolved it? > > Yes, by closing pavucontrol. > > -- > Alexander E. Patrakov > _______________________________________________ > pulseaudio-discuss mailing list > [email protected] > https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss >
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