what are your settings? buffer etc.? try increasing the buffer and see if that helps. does PD actually output any sound in those first 10-15 seconds?

On 11 Dec 2019, at 13:21, Csaba Láng <langcsaba@gmail.com> wrote:

and an other error which slows down the PC significantly appears in terminal:

alsa xrun recovery apparently failed
restart alsa output

On Wed, Dec 11, 2019 at 1:18 PM Csaba Láng <langcsaba@gmail.com> wrote:
Dear list,

I am trying to play video with synced audio on HDMI output, but after 10-15 seconds Pd dies with an error:

pd: pcm.c:1168: snd_pcm_prepare: Assertion `pcm' failed.
Pd: signal 6
Can you help me to fix this issue?

Ubuntu 18.04 with ALSA

Best,
Popesz

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