HOWTO: Solve sound missing or out-of-sync in Flash Player

[remusus]

OK, I found this solution while I was trying to get my sound card to use dmix to mix sounds, since alsa thought it was able to do hardware mixing but it never could.

First, edit/create ~/.asoundrc to include the following (nano ~/.asoundrc)

pcm.!default {
        type plug
        slave.pcm "dmix"
}

NOTE: This will cause alsa to use software mixing on cards with hardware mixing support... I don't know if this step is necessary to fix sync on cards with hardware mixing support.

Install alsa-oss (sudo apt-get install alsa-oss). Then, run your browser prefixed with aoss (ie "aoss firefox") and your flash sync and/or lack-of-sound will be fixed.

For Firefox, you can have it automatically run it with aoss by editing /etc/environment (sudo nano /etc/environment) and adding

FIREFOX_DSP=aoss

to the end of the file. Other browsers probably have similar methods, but I am not personally familiar with them.

[bigzak]

I'm going to give this a shot later on; it's a problem that's been bugging me for ages! There's nothing worse that watching Strong Bad and the paper not being in sync

[remusus]

Well I was very much surprised when doing this this made the sync in Flash Player perfect, since the main goal was just getting the sound in Flash Player to work at the same time as a music player... but if it works I won't complain

[raggamuffin]

thanks for this, remusus...

this problem had been bugging me for a while; this quick fix works perfectly for me...

[grsing]

You didn't happen to find out what package aoss is in, did you? I've got alsa-utils installed, but aoss comes across as not found.

[space42]

You didn't happen to find out what package aoss is in, did you? I've got alsa-utils installed, but aoss comes across as not found.

The package is alsa-oss.

This solution does not fix the sync issue for me. It seems to be the worst with video like youtoube. It goes out of sync right away.

My solution is running windows firefox or IE in wine with flash 8.

[remusus]

@space42, what sound card, sound kernel module and browser are you using? I'd like to know which cards this works and doesn't work for...

[Pionner]

Tried on 3 fresh Dapper install with onboard soundcards (two Intel and a Sis963).

It works like a charm. Thanks.

[Dr. Feelgood]

It works when I run firefox from terminal using "aoss firefox" but I can't get it to work automatically. I edited the same file as directed. Is there another file I'm missing? I tried it with and without quotation marks with the same results.

[bionnaki]

worked perfectly for me.
thanks.