Symptom:
On some Linux systems, including 12.04, the exacqVision Server does not start. The exacqVision Client cannot connect.
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Problem:
Server 9.1.10 introduced issue causing ALSA audio mixer to fail. ‘gdb’ shows:
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
core: pcm_params.c:2249: snd1_pcm_hw_params_slave: Assertion `err >= 0' failed. Aborted (core dumped)
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Solution:
Update exacqVision Server to version 9.2 or higher.