Fullscreen broken in OS X 10.6.8 / Snow Leopard

[temhawk]

Amnesia works fine if I run it in windowed mode, but if I tick the "Fullscreen" option the game starts and becomes "invisible", so that I am able to see my desktop and hear the audio but there is just no picture, so I have to force quit.

This is at native resolution (1920x1200) by the way, and if I choose a lower resolution I can see the game, but it's not up-scaled and in the bottom-left corner of the screen, and it's still broken because if I move the cursor and click around parts of my desktop become visible and flicker.

In Lion fullscreen works, but I'd like to play the game in Snow Leopard (10.6.8).

My mac is:
17-inch MacBook Pro Late 2011
2.4 GHz Intel Core i7
8 GB 1333 MHz DDR3
1GB AMD Radeon HD 6770M

I am running Amnesia 1.2.1 of course.

[jens]

I tried 1.2.1 on 10.6.8, with radeon 4670 and it worked fine, my native is 1920x1080 however. Did you try running in 1680×1050 (the next 16:10 resolution from 1920x1200)? Any programs running on the computer that could possibly interfere? Perhaps some settings with the display/user interface (increased the font size or similar) that is not standard? Did you try to reboot the computer to make sure it was "fresh" before running the game?

[temhawk]

Thank you. I tried all of those things. There are no programs running whatsoever and no weird settings since this is a fresh install.

It must be my specific graphics card then because I get a weird bug sometimes that no one has ever seen that I've talked to about it: http://i.imgur.com/Q7Ez6.jpg + http://i.imgur.com/Q7Ez6.jpg (this is in Lion which I have installed on another partition)

That, or it may be because running Snow Leopard is not officially supported on my model of MacBook Pro, or the combination of that and my graphics card. I haven't had any other problems running Snow Leopard on this machine though. (For your information, the hardware of Late 2011 MBPs that don't officially support running Snow Leopard is nearly identical to the Early 2011 models that originally shipped with Snow Leopard, which is why I, like a few other people, decided to try it because I'm not that interested in Lion.)

[jens]

The game works if you run it on Lion?

[temhawk]

Yes, it does work in Lion without issues. It wont be a problem for me to play it in Lion, I just would have preferred it to work in Snow Leo because that's what I usually boot into. Thanks for trying to help.

[jens]

I think it probably is a driver issue then, unfortunately Apple only (or almost only) updates drivers with their OS updates, so you have no choice most of the time but to upgrade the whole OS only to get the better drivers.