[pulseaudio-tickets] [Bug 78205] game trine2/steam voice chat/steam big picture mode produce scratchy sound with 5.1 usb audio card

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78205

Sylvain BERTRAND <sylvain.bertrand at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|game trine2/steam voice     |game trine2/steam voice
                   |chat/big picture mode       |chat/steam big picture mode
                   |produce scratchy sound      |produce scratchy sound with
                   |                            |5.1 usb audio card

--- Comment #4 from Sylvain BERTRAND <sylvain.bertrand at gmail.com> ---
2 things:
  * in dmesg, when the 5.1 usb-audio card is enabled, I get those non stopping
messages:
 retire_playback_urb: 993 callbacks suppressed
    they stop when I switch off the card in pavuctl

  * I compared with a linux kernel 3.10.4 and a previous version of pulseaudio
(debian wheezy with alchemist_beta repos):
while playing trine2, no retire_playback_urb messages in dmesg, the sink input
(pactl command output) misses the rate parameter in format field.

It seems pulseaudio misses the rate parameter of the sink input and then tries
to play a 44100Hz 5.1 stream on a 48000Hz device which creates the
retire_playback_urb messages.

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