[Bug 92889] Sound output starts several seconds late using DisplayPort with [AMD/ATI] Tahiti XT HDMI Audio [Radeon HD 7970 Series] [1002:aaa0]

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Apr 10 23:26:35 UTC 2017


--- Comment #20 from Paul <Paul.Hancock.17041993 at live.com> ---
>From my experience with GCN audio it's slower to initialise than other audio
devices, so what's likely happening here is that the test audio playback is
waiting for the device to be fully ready before actually playing the audio

This is not generally a bad thing, but can be handled better, window's for
example plays everything in its software buffer in its own time, when the
device is eventually ready it plays where the soft buffer is up to, resulting
in the first second (or less) being cut out but no timing issues occur.

@jdedraeck that seems to be a different issue entirely, by the sounds of it
it's not being initialised correctly and the wrong format is being used, or the
application is sending the wrong format (probably sending 96KHz when the device
only allows 44.1 or 48).

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