Alsa causes lockup/freeze (link)

[golinux]

Thought I'd post this link here in case some Linux user has found a fix for this.  I will be seriously disgusted if I have to install pulseaudio:

http://avidemux.org/smif/index.php/topic,16510.msg73115.html#msg73115

golinux

[mean]

It seems to be a bug in debian only
The call to drain will lock, commenting it out might help you
Line 325 in ADM_deviceALSA.cpp

[golinux]

It seems to be a bug in debian only
The call to drain will lock, commenting it out might help you
Line 325 in ADM_deviceALSA.cpp

Thanks for the suggestion.

I searched for that file and it is not to be found on devuan jessie or debian wheezy.  In fact, there is not one *.cpp file on either system.  What am I missing?

[Jan Gruuthuse]

When you build from source:

Code Select Expand

~/avidemux2/avidemux_plugins/ADM_audioDevices/Alsa/ADM_deviceALSA.cpp

[golinux]

When you build from source:

Code Select Expand

~/avidemux2/avidemux_plugins/ADM_audioDevices/Alsa/ADM_deviceALSA.cpp

Thanks for the info.  I thought that was probably the case.  Unfortunately, that's beyond my skillset.    Maybe I could try running avidemux in wine to get around pulseaudio.  But since the new version of avidemux isn't backwards compatible with my previous projects, I don't know how useful it will be to me anyway..  Regardless, I'll be keeping squeeze and wheezy around for any future media work for some time to come.  I've had a great ride with avidemux for years so thank you for that.

*edit* Then there's apulse which hopefully will be replacing pulseaudio in devuan.

[golinux]

Made some progress.  I downloaded the source and was able to find the file - I guess that whole section dealing with the drain lock needs to be commented out?  It also looks like I need to install dpkg-dev for it to download properly:

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root@devuan:/home/xxxxxx/Desktop# apt-get source avidemux
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Need to get 17.4 MB of source archives.
Get:1 http://us.mirror.devuan.org/merged/ jessie/main avidemux 1:2.6.8-dmo8 (dsc) [2,563 B]
Get:2 http://us.mirror.devuan.org/merged/ jessie/main avidemux 1:2.6.8-dmo8 (tar) [17.4 MB]
Get:3 http://us.mirror.devuan.org/merged/ jessie/main avidemux 1:2.6.8-dmo8 (diff) [12.8 kB]
Fetched 17.4 MB in 32s (534 kB/s)                                             
sh: 1: dpkg-source: not found
Unpack command 'dpkg-source -x avidemux_2.6.8-dmo8.dsc' failed.
Check if the 'dpkg-dev' package is installed.
E: Child process failed


Am I on the right track?

[Jan Gruuthuse]

perhaps you can find some more info here:
http://www.avidemux.org/admWiki/doku.php?id=build:install_2.6 see section Requirement list (debian/ubuntu)

[golinux]

perhaps you can find some more info here:
http://www.avidemux.org/admWiki/doku.php?id=build:install_2.6 see section Requirement list (debian/ubuntu)

That looks like it will be helpful.  Thanks.

[mean]

Just comment one line

[golinux]

Just comment one line

Is this correct?  If so, I'll start figuring out how to repackage it.

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{
       /* Stop PCM device and drop pending frames */
    snd_pcm_drop(pcm_handle);

    /* Stop PCM device after pending frames have been played */
   /* snd_pcm_drain(pcm_handle);
      if (snd_pcm_close(pcm_handle) < 0)
      {
printf("[Alsa] Troubles closing alsa\n");

      } */
     }
     _init=0;
     return true;
}

Thank you for your patience.

[Jan Gruuthuse]

If deb package use 1st line, if rpm use 2nd line.

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cd ~/avidemux2 && bash bootStrap.bash --deb --with-qt4 --without-gtk --with-cli
cd ~/avidemux2 && bash bootStrap.bash --rpm --with-qt4 --without-gtk --with-cli

[mean]

just that one
snd_pcm_drain(pcm_handle);

[golinux]

TYVM.  Can't be clearer than that.  Will report when the deed is done.

[golinux]

Tried it.  No change.  Still locking up if pa isn't installed. 

[mean]

Are you sure something else is not taking over the audio device ?