Multi-display configuration lost in linux when going fullscreen and then turning back

[brawaga]

I have two displays, one of them rotated 90°. Any SDL application works good in fullscreen, but, after closing or returning to windowed mode, system shows same picture on both displays, and I have to restore settings manually. That's really annoying, especially because fullscreen key could be pressed not intentially.

[icculus]

This isn't going to make it for 2.0.16, tracking it down is going to take longer than we have.