Demo segfault at start

[dadar]

There is no further info. Both penumbra overture and penumbra black plague demo were working fine.
No dmesg output or anything in /var/log related to the segmentation fault.
From the backtrace, it seems it may be a problem with openal or alsa. So I reinstalled those. It doesn't fix anything. This is :
alsa-lib-1.0.21a
openal-1.11.753

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Here is an strace of Launcher.bin at the end (truncated because it is 600k, above upload cap limit)