I have one user. We’ve pretty much all got two monitors, but he insists on rotating both of them vertically – that is, they’re taller than they are wide, and he’s got a Radeon card. I always have X grief on his system when I update it….
I just did a full update. X comes up in both screens… but the left one is *not* rotated, while the right one is. And they’re mirrored. I’ve logged in as root, looked at all the configuration I know of, and nothing tells it to mirror, or one rotate and the other not. But when I use the menu, and go to system->preferences-display, it shows mirror screens
*always* checked. I uncheck that, and hit apply, and nothing happens. I
move the one off from over the other, and rotate the other, and still, nothing at all happens, and I don’t see anything written, anywhere.