https://bugs.freedesktop.org/show_bug.cgi?id=104501
Bug ID: 104501
Summary: Pulseaudio delays sound compared to activity on screen
when using sound via HDMI
Product: PulseAudio
Version: unspecified
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: alsa
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
CC: [email protected]
I use a HDMI connection to my monitor with speakers. When playing a score in
Musescore the sound is delayed by about 1 second compared to the the activity
on the screen. The note in the score which is played is highlighted.
When changing the sound device in the tab "I/O" in Musescore from PulseAudio to
ALSA audio, sound and picture are in sync. This suggests that pulseaudio is
delaying the sound. "I/O" is reached by selecting Edit->Preferences...
I noticed earlier also this type of delay when playing a video in Firefox,
however currently this is no longer the case. It was most apparent when a
person is speaking in the video.
Previously I did not use HDMI to produce sound, but an old fashioned sound
device, which AFAIR also went through PulseAudio, but I did not see/hear this
delay.
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