[meta-freescale] pulseaudio makes system unstable

Daiane Angolini daiane.list at gmail.com
Tue Nov 25 08:21:46 PST 2014

On Tue, Nov 25, 2014 at 2:05 PM, Alexander Shashkevych <alex at stunpix.com> wrote:
>>> Maybe this is known issue, but I have not found any answers by
>>> googling. I have two boards and two systems. One board is wandboard
>>> quad with imx6 and second is custom board based on wandboard quad.
>>> Also I have Ubuntu 13.10 (baked with my own recipes) and I have Yocto
>>> 1.6.2.
>>> On both systems and both devices (in any combination) all graphic
>>> stuff is working fine: gles2.0 demos, gstreamer with imx plugins.
>>> Everything is running with h/w acceleration. But once I start to play
>>> audio with pulseaudio (for example using gstreamer) system becomes
>>> pretty unstable: gstreamer could crash with 'illegal instruction'
>> Which audio device are you using? The HDMI port (imx-hdmi-soc-audio) or the
>> analog port (sgtl5000) on the Wandboard? If you are indeed using the HDMI
>> audio, could you try using the analog audio and see if the problem persists?
>> I reproduced the 'Illegal instruction' crashes you mention when using HDMI
>> audio -- not only with `pulsesink' but also with `alsasink' depending on
>> other unrelated particularities of the test-- but the problem disappeared as
>> soon as I switched to the sgtl5000 audio.
> I've tried to use different pulse sinks and I see that it behaves a
> bit differently, but still unstable. Sometimes pavucontrol closes
> unexpectedly, sometimes desktop closes, sometimes pulse server stops
> and once pulse server stops, gstreamer can't connect again to newly
> started instance of server and so on. Very strange and unpredictable.
> But once I'm starting to use alsa device from gstreamer - everything
> plays. Looks like pulseaudio is incompatible with hardware. Not sure
> where to move further.

May [1] be related with your problems?

[1] http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/sound/soc/fsl/imx-hdmi-dma.c?h=imx_3.10.31_1.1.0_beta2#n289

> Regards,
> Alexander
> --
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