Error on terminal

[amilapsn]

I've got ubuntu 12.04. I installed lmms and ran it using terminal.
Although lmms opened and worked as usual, following errors were shown in the terminal:
amilapsn@ubuntu:~$ lmms
Notice: could not set realtime priority.
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
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 audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib pcm_dmix.c:957:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
Cannot connect to server socket err = No such file or directory
Cannot connect to server socket
jack server is not running or cannot be started
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
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 audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib pcm_dmix.c:957:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
Cannot connect to server socket err = No such file or directory
Cannot connect to server socket
jack server is not running or cannot be started
What this really means?
Am I in trouble or can this be ignored?
Please help me to figure it out.

Thank you.

[amilapsn]

Hey, I started it again. Now it's showing only the Error: Could not set real time priority only. I think this is not a problem to bother about.

[Eino]

Hey, I started it again. Now it's showing only the Error: Could not set real time priority only. I think this is not a problem to bother about.

You got the errors because your sound card dose not support real-time priority.
If you did not run the program from the terminal, you would have never noticed it. Unless you went fishing around the error logs, in your system.
Another thought:
Are you running jack for the patchbay to connect midi devices?, if so try running lmms without jack running. ALSA also has a midi connection called aconnect that runs in the background, you may not need to run jack at all. Jack could be also the cause of the error conflicting with aconnect.
I have found with Linux you can run one, or the other, but not both at the same time. Otherwise you get errors, and degradation of performance.
The graphical interface for aconnect is "aconnectgui". If you may want to install it to see the connection between ALSA and LMMS.