[pulseaudio-discuss] Fwd: it's a mess here...resource busy!!!

[Beinan Li]

Further update:

A X restart didn't bring me back the builtin soundcard either.
I'll have to restart the machine to see.

Beinan

On Wed, Dec 10, 2008 at 4:15 AM, Colin Guthrie <gmane at colin.guthr.ie> wrote:

> 'Twas brillig, and Beinan Li at 10/12/08 07:00 did gyre and gimble:
> > Running Ubuntu 8.04 on my HP Pavilion dv6000 laptop.
> > I have a USB SB Live! soundcard and a builtin AC97.
> > Everytime when I unplugged my USB soundcard, pulseaudio connection is
> > broken,
> > and I had to restart X to bring it back (pulseaudio -k && pulseaudio -D
> > doesn't do the trick).
>
> Sounds like pulse has deadlocked somehow. After pulseaudio -k, can you
> check to see if pulse is still running (ps aux| grep pulseaudio). If it
> is then you can try a killall -9 pulseaudio to really nuke it, but it
> would be good to get some debug out of it.
>
> What really needs to happen tho' is to get a backtrace out of this.
>
> Do the following in your shell (each block is one line):
>
> export LD_BIND_NOW=1
>
> gdb pulseaudio
>
> handle SIGXCPU SIGPWR SIG33 SIG34 SIG42 SIG43 SIG44 SIG45 SIG46 SIG47
> SIG48 SIG49 SIG50 SIG51 SIG52 SIG53 SIG63 SIG62 SIG61 SIG60 SIG59 SIG58
> nostop noprint
>
> run
>
>
> This will run pulse under GDB (please note that you need to install
> debugging symbols - don't know how that is done in Ubuntu).
>
> Leave this terminal open and then make pulse crash. When it does go back
> to this terminal and you should be at a prompt again. Type:
> thread apply all bt full
>
> Then copy the output to a file and attach it to a bug report on
> http://www.pulseaudio.org/
>
> It would also help to say what version of PA you are using. As it's an
> older Ubuntu, I'd guess it's the stock 0.9.10 version?
>
> > And sometimes flash for Firefox doesn't give sound, whether I install
> > libflashsupport or flashplugin-nonfree.
>
> What version of the flash plugin are you using. With version 9 there are
> deadlocks in the audio API that adobe expose. There is nothing we can do
> about that as it's not open software. They have fixed a lot of the
> issues with their version 10 so you should try that if you are not
> already (in theory libflashsupport is not needed there but it may still
> be nicer to use it - there is a nicer name for the audio stream but
> that's trivial!).
>
> > And I constantly get message saying resource busy when I restart
> > pulseaudio by -k -D.
>
> Chances are the first pulseaudio is not dying properly with -k as I
> noted above. If that's the case it will still be hogging the sound
> device and the second version cannot access it (although the second
> version should not run really - but perhaps at this point some other app
> - e.g. flash has started using ALSA directly and that's why it's busy).
>
> > HELP!!!!!!
> >
> >
> > I pasted my `pulseaudio -vv` command output below.
> >
> >
> > E: alsa-util.c: Error opening PCM device hw:0: Device or resource busy
> > E: module.c: Failed to load  module "module-alsa-sink" (argument:
> > "device_id=0
> > sink_name=alsa_output.pci_8086_284b_sound_card_0_alsa_playback_0"):
> > initialization failed.
>
>
> Yeah this basically means that something is using the device.
>
> The output from the following command should tell you what application
> is using the alsa device:
>
> Here is the output on my machine when pulse is playing a track.
>
> [colin at jimmy ~]$ sudo lsof | grep /dev/snd
> kmix      7080      colin   10u      CHR              116,0        0t0
>      3836 /dev/snd/controlC0
> pulseaudi 7730      colin  mem       CHR             116,16
>      3735 /dev/snd/pcmC0D0p
> pulseaudi 7730      colin   17u      CHR              116,0        0t0
>      3836 /dev/snd/controlC0
> pulseaudi 7730      colin   18u      CHR             116,16        0t0
>      3735 /dev/snd/pcmC0D0p
> pulseaudi 7730      colin   19u      CHR              116,0        0t0
>      3836 /dev/snd/controlC0
> pulseaudi 7730      colin   26u      CHR              116,0        0t0
>      3836 /dev/snd/controlC0
>
> HTHs you debug some more.
>
> Col
>
> --
>
> Colin Guthrie
> gmane(at)colin.guthr.ie
> http://colin.guthr.ie/
>
> Day Job:
>   Tribalogic Limited [http://www.tribalogic.net/]
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>   PulseAudio Hacker [http://www.pulseaudio.org/]
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>
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