安装的是源里的，lubuntu11.04。以下是提示，求个解决方案。

[email protected]:~$ fgfs
FGMultiplayMgr - No receiver port, Multiplayermode disabled
Nasal runtime error: bad/missing argument to subvec()
at /usr/share/games/FlightGear/Nasal/string.nas, line 225
called from: /usr/share/games/FlightGear/Nasal/string.nas, line 235
called from: /usr/share/games/FlightGear/Nasal/string.nas, line 202
called from: /usr/share/games/FlightGear/Nasal/multiplayer.nas, line 378
called from: /usr/share/games/FlightGear/Nasal/multiplayer.nas, line 446
Nasal runtime error: bad/missing argument to subvec()
at /usr/share/games/FlightGear/Nasal/string.nas, line 225
called from: /usr/share/games/FlightGear/Nasal/string.nas, line 235
called from: /usr/share/games/FlightGear/Nasal/string.nas, line 202
called from: /usr/share/games/FlightGear/Nasal/io.nas, line 210
Nasal runtime error: props.setAttribute() with invalid attribute
at /usr/share/games/FlightGear/Nasal/props.nas, line 25
called from: /usr/share/games/FlightGear/Nasal/gui.nas, line 137
Nasal runtime error: bad/missing argument to subvec()
at /usr/share/games/FlightGear/Nasal/string.nas, line 225
called from: /usr/share/games/FlightGear/Nasal/string.nas, line 235
called from: /usr/share/games/FlightGear/Nasal/string.nas, line 202
called from: /usr/share/games/FlightGear/Nasal/gui.nas, line 376
called from: /usr/share/games/FlightGear/Nasal/aircraft.nas, line 519
called from: /usr/share/games/FlightGear/Aircraft/c172p/Nasal/liveries.nas, line 3
KI266 dme indicator #0 initialized
loading scenario 'nimitz_demo'
creating 3D noise texture... DONE
ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround71
ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib audio/pcm_bluetooth.c:1613:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib audio/pcm_bluetooth.c:1613:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib audio/pcm_bluetooth.c:1613:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)
ALSA lib audio/pcm_bluetooth.c:1613:(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
段错误

声音的问题，看fg的官方wiki，有解答