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I am getting an error using espeak. Audio comes out the head phone jack, but all of this stuff get written to the command line. I installed espeak and alsa-utils. Any idea how to fix these errors?

[kevin@raspberrypi ~]$ sudo espeak "hello"
[sudo] password for kevin: 
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.front
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround40
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround41
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround50
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround51
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround71
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib pcm_dmix.c:957:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
ALSA lib pcm_direct.c:877:(snd1_pcm_direct_initialize_slave) slave plugin does not support mmap interleaved or mmap noninterleaved access
ALSA lib pcm_dmix.c:1030:(snd_pcm_dmix_open) unable to initialize slave
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
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What's the problem? You say it's working? –  Jivings Oct 30 '12 at 22:17
    
Yes, I get audio, however it typically is not normal to have all of these warnings and errors printed to the command line. I would like to fix this. –  kevin Oct 30 '12 at 23:44
    
I am getting the same error messages but the audio is not normal. There is always a delay at the start of each sentence. Can anyone help, please? –  user3475 Nov 28 '12 at 12:18
    
What do you mean "not normal"? –  kevin Dec 17 '12 at 22:53
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4 Answers

up vote 3 down vote accepted

Here is the short solution:

sudo espeak "hello" 2>/dev/null

Here is my explanation:

The output you're seeing is normal.

Jack is an audio server and the errors report that Jack is not installed. There's nothing wrong with this, espeak will just use a different audio engine such as ALSA or Pulse. In your case it looks like it's using ALSA.

The above command will just hide the output from you.

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Doesn't that mean espeak is being a bit too verbose and printing it out to stderr poorly? If it's not really an error, anyway. –  Shurane Nov 6 '12 at 22:46
    
@Shurane Yes it is. –  Jivings Nov 7 '12 at 8:56
    
Is it possible to get audio output to HDMI and not to head phone jack? –  avra Dec 9 '12 at 21:29
1  
@avra That should happen by default if your HDMI device supports it. If not then there should be something in the espeak documentation. –  Jivings Dec 9 '12 at 21:36
    
Yes it does work after all. My mistake. –  avra Dec 17 '12 at 11:21
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You can get rid of the annoying messages about jack by running the jack server with the following command line:

jackd -r -m -p 8 -d dummy

I put this in my ~/.config/autostart/jackd.desktop

[Desktop Entry]

Type=Application

Name=jackd

Exec=jackd -p 8 -r -m -d dummy > /dev/null 2>&1

StartupNotify=false
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Found the answer for this here:

http://alexpb.com/notes/articles/2012/11/14/error-when-playing-audio-on-raspbian-on-a-raspberry-pi/

in

/usr/share/alsa/alsa.conf 

   change the line "pcm.front cards.pcm.front"
             to "pcm.front cards.pcm.default"

worked for me. Can't tell if there is other better solution.

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Turns out pulseaudio ruins ALSA. For me, espeak worked with 'sudo' only. After apt-get --purge remove pulseaudio, things got back to normal.

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