My device is not set up with forced vertical rotation (verified in other apps). And I forgot to mention, that I can see ScummVM startup screen (horizontally aligned), and then it goes black. And then... after some time I see ScummVM screen :) It seems that there is some 'init' phase with black screen.

Here is my log: I/SurfaceFlinger( 1913): id=2009(389) createSurface 0x870cf4 (720x1280),2 flag=400, scummvm D/OpenGLRenderer( 2234): Flushing caches (mode 0) D/STATUSBAR-PhoneStatusBar( 2234): onConfigurationChanged - Configuration:{0 1.0 260mcc3mnc pl_PL layoutdir=0 sw360dp w640dp h335dp nrml long ...

I have similar problem on my Galaxy SIII. Enabling/disabling screen rotation did not help/