Hello.
I once used to use GNOME 3 as my desktop environment and I was experiencing a problem -- when I tried to change the screen resolution to 800x600 (normally I have it set to 1920x1080), I was getting some 'Out of Range 93. 7kHz / 75Hz' error message which was reported by my monitor itself, and otherwise the screen was black as if that mode wasn't supported (and it seemed like there was no way I could get back to a safe configuration without rebooting the machine). Now I've switched to MATE and I'm able to change the screen resolution for the desktop just all right, but when I say, launch the GOG version of Fallout (a PC game not supported by Linux natively) using Wine, I again am getting the same error. But if I change the resolution to 800x600 (which is the default resolution for the game) beforehand, it starts successfully and I can play it (in full screen mode). So what's the problem and how could I fix it? (I've also tried using just twm instead of MATE or GNOME 3 and it's all the same, so I don't think it has to do with the desktop environment I'm using.)

I'm using Arch 64-bit.

Hello, it's me again. Problem was solved by reinstalling the xorg server (xorg package group in Arch). God knows what exactly went wrong, but now it seems to be working all right (I mean, I can run Fallout in 800x600 and other resolution modes). Initially xorg was installed to my pc as a dependency of GNOME 3, and it may be simply that its configuration was broken or bugged, but it's hard to say for sure now... But I still would be curious to know more about the possible cause of this problem. Does anyone have any ideas?