Crash when Flashlight? auto-activate

[Tutur68]

Hi, I'm having a really annoying crash when you enter the shuttle station :

So i'm at upsilon B (I think) the little guy open the door, I'm out of the water ect... but in the really dark corridor that follow the enter, a random flashlight activate. One second later, SOMA crash, and I come back to my desktop.
So I have tried many times, (even backwards) and it still crash.
I reinstalled SOMA, and same problem.
then I look at the recommended config and it fits.
I have tried all of the drivers, but no success.
here is my configuration :

7.7 GB Ram
Intel® Core™ i5-4460 CPU @ 3.20GHz × 4
GeForce GTX 750/PCIe/SSE2
Ubuntu 14.04 LTS 64 bits.

So I hope somebody will help me (or even better: a developper)
And have a Good day, or night.
EDIT:
hpl.log in attachement