Arch Linux

whoops

Member

Registered: 2009-03-19

Posts: 891

[solved] Sound in flash stopped working (alsa, x86_64, rate)

Why?

Sound in flash stopped working (alsa, firefox, x86_64). Tried flashplugin-prerelease from archlinuxfr: nothing different.

Everything worked before I rebooted. I changed nothing else since last reboot.  Can't figure out what happened.

Updates among other things:
firefox, xulrunner (firefox I did restart - the new one had sound in flash before I rebooted)
openal, lib32openal (don't think that has anything to do with it?)
libsndfile (that's something entirely different, too, right?)

And a lot of others that don't look related... no Idea how many really, I haven't rebooted in quite a while. Maybe there even was a kernel update since last reboot. Or two.

edit: Also some interactive flash stuff that did work before has stopped working now.
edit2: Chromium doesn't have sound in flash either. Tried recompiling firefox / switching to AUR/firefox-pgo: no change. Everywhere else, sound is working fine. Also, several flash games I tried get stuck / freeze after intro.

Thx!

Last edited by whoops (2011-03-25 07:31:43)

MKIV

Member

Registered: 2011-03-24

Posts: 1

Re: [solved] Sound in flash stopped working (alsa, x86_64, rate)

I just opened kmix and noticed that the PCM volume level was set to zero. I just raised it and that solved the problem for me.

RiceKills

Member

Registered: 2010-05-31

Posts: 72

Re: [solved] Sound in flash stopped working (alsa, x86_64, rate)

What is the output of aplay -l ?
do you have more than one sound card?

Do you use multilib or a 32bit chroot?

Last edited by RiceKills (2011-03-24 21:25:54)

whoops

Member

Registered: 2009-03-19

Posts: 891

Re: [solved] Sound in flash stopped working (alsa, x86_64, rate)

Couldn't find any changes there:

I LC_ALL=C aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: AD198x Digital [AD198x Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

I tried the multilib version and the x86_64 prerelease. Both did work perfectly fine before I rebooted (I tried which one works better recently and couldn't see any real difference). Didn't have trouble with flash for months before this reboot.

I found a few modules I was unfamilliar with were loaded:
snd_seq_os snd_seq_dummy snd_seq_midi_event  snd_seq snd_seq_device   
... and removed them with rmmod. No change. (I should have restarted alsa at that point I guess just to make sure, those weren't the problem?)

Then I changed the rate in asound.conf to 41000 and restarted alsa - now everything works again! Strangely, no more freezes too (those were reliable).

I remember having had problems with flash not having sound unless I set the rate to 41000 about a year ago. After some updates, I tried again and all rates supported by my sound-card seemed to work. My guess would be regression in whatever fixed that problem... but I don't know.

I'll leave that "unsolved" until I manage to figure out what it really was about.

Last edited by whoops (2011-03-24 22:17:11)

whoops

Member

Registered: 2009-03-19

Posts: 891

Re: [solved] Sound in flash stopped working (alsa, x86_64, rate)

OK:

Seems it was the rate setting.
I looked into my backups: Had 48KhZ for a long time, now it doesn't work any more. 41Khz does.

Don't know what else to do about that, so.... "solved"

Last edited by whoops (2011-03-25 07:32:01)