black graphics bug caused by steam events

[Maui Mallard]

Hello guys, I'm having an annoying bug which transforms the game into a much more dark metro... I'm using Debian Jessie + Catalyst 13.35.5 from the fglrx catalyst package (Debian Repositories). I know that the Linux port officially supports mainly the Nvidia gpu's though any help would be welcome. I would appreciate a lack of "get nvidia. problem solved" replies :3.

Example Screenshot:
http://i.imgur.com/z2oNefW.jpg

Problem Overlay:
The problem only arises while the Steam Overlay is enabled in-game.
When I use Shift+Tab to open it up or when there's a steam event notification (such as "Achievement Unlocked", "Card Drop", "Friend Online", "Message" etc...) the game's graphics turn dark/black.
Everything is instantly turned into black. The models are too dark and there are black "boxes" in front of my view (which move when I face a different direction. Ex Images:b1, b2, b3, b, b5). The subs are black as well. The problem doesn't occur before the first "Hit any bottom" (or whatever) after the first part of the intro and before the Main Menu (which is the point after which you can actually use the Steam Overlay!)

I can't seem to find any log files of MetroLL anywhere in my system and there's not anything interesting coming out of steam's output (or at least I didn't notice it).

Where are the Metro's log files located? Has anyone experienced a similar bug?

Screenshots:
http://i.imgur.com/91HF5eQ.jpg
http://i.imgur.com/GT6YKAp.jpg
http://i.imgur.com/hexhtuS.jpg
http://i.imgur.com/1pccLTc.jpg
http://i.imgur.com/urCxhrf.jpg

(The next one must be after the occurance of the bug, though in a rare normal camera angle(?) Might just as well be before testing the bug...)
http://i.imgur.com/dUqELtK.jpg
http://i.imgur.com/zL3fdlr.jpg

Changing Camera Angle (b1, b2, b3, b4, b5):
http://i.imgur.com/MIYk7jW.jpg
http://i.imgur.com/BI1yJoY.jpg
http://i.imgur.com/NiHuuox.jpg
http://i.imgur.com/xyFOKL2.jpg
http://i.imgur.com/XKsuva3.jpg

More Screenshots:
http://i.imgur.com/fXE6M6T.jpg
http://i.imgur.com/KsYokFy.jpg
http://i.imgur.com/Z0J07hL.jpg

Screenshots from Testing the Main Menu (+before campaign's launch):
(Intro)
http://i.imgur.com/Y9470SK.jpg
http://i.imgur.com/8idDfxc.jpg
(Main Menu)
http://i.imgur.com/3MDO8PT.jpg

That was a hell lot of screenshots :P Not sure if I forgot to mention anything. Thanks for any help/info. Going to post in lastlightforum.com as well...

[Maui Mallard]

Finally got a reply :{ http://www.gameru.net/forum/index.php?s=5e0384f98d63fef29a528f792bc82c6b&showtopic=50749&pid=1445431&st=520&#entry1445431