It makes you wait for slow-to-start programs to show their stupid window to avoid them popping up when you do other stuff in the meantime.
The default display settings for gdm are fucked up. If they have a default for primary monitor, why showing greeter where the mouse is, which is in the middle, which depending on the widths of your monitor might end up on the wrong monitor (like in my case)?Hell, GDM is even so ****ing stupid as to place the greeter window and panel on whichever monitor the cursor is currently on, including a "race condition" that allows the greeter to show up on one display and the panel to show up on another.
Then comes the fucked up resolution, that is totally not the sane value you chose in DisplayPreferences for your desktop.
Now this becomes really FUBAR when you decide to rotate one of your screens. GDM is of course not rotated, so you might end up with the greeter window on the rotated screen.
Why is it so hard to change settings for the gdm screen? Why not "apply for gdm screen" checkbox in Display Preferences aka gnome-display-properties (another fuck up, the naming).
There is no much small things to fix in gnome2 and they waste time on that (probably useless) gnome3 thing.
Sorry, but that's just retarded. I mean you. Not only can you place the screens using xrandr, you can do that in Display Preferences.Oh, and just to top it off, the Linux r600 driver lists my displays in reverse order of Windows, so whenever I change OSes I need to swap cables to get the monitor that's actually in front of my face to be the primary display. Lovely.
I run E16 (sometimes play with E17) - that's rather well suited to dual monitors (or more I suppose). No xinerama though - I prefer running two instances of X. Still, it works like a charm, don't have any issues at all.
It's not for everybody - I have no particular use for dragging windows across monitors (no reason - just tend to keep things where they are), and I doubt such a setup would play as nice with GNOME, KDE, etc, but for me it's so useful now that I wouldn't want it any other way. It also has no issue with different monitor resolutions.
While they're there I hope they have a look at how they do a multi-card, multi-monitor desktop. I'd be nice to be able to have a unified desktop across two or more video cards.
It does sound like there'd be a basis for the compositor to deal with this in a sane way.
Can you go as far as using multiple X instances on different users, each with his/her keyboard and mouse?
On Windows XP you can right-click the desktop -> properties -> screen resolution (or something)
You now see multiple screens numbered. So if you have dual head you'll see a blue square with number 1 and a blue square with number 2 on it. Simply drag the squares left/right/up/down, relative from each other, and you've set your display order.