A incorrect resolution in GameCube?

[bobok1]

Hello, guys. I warning that i have bad english, so if you're can't understand my post, i'm sorry.

I try to play "Sonic Adventure 2: Battle" on GC with Dolphin. It's was fine, but... i have incorrect resolution - there is black screen under game-screen. I tried to change "aspect ratio" to 16:9, 4:3, auto, but they didn't help this problem.
I didn't tried to play other games (on Wii or GC) - only SA2:B.

I have 1366x768 monitor, my computer's hardware written in my profile.

There are screenshot's about this problem in-game and setting on "graphics".

Help me, please. Thank you.

[Shonumi]

The answer was discussed in the official game thread over in Game Discussion a bit ago. This post should contain the solution you're looking for, though by the "Z key" the author of that post means whatever you have configured as the B button for your GCPad.

[bobok1]

Shonumi, thank you very much. It solved my problem.