Bug 1023907

(In reply to Tim Waugh from comment #0)
> Sometimes this works, and sometimes it doesn't.

When it doesn't work, can you still manually resize the window to half the screen width? If a window reports a miminum width that is bigger than that, tiling will be disabled.

Yes. In fact, I can drag the window to the left edge to get it to maximise to the left side. It's only the keyboard shortcut that doesn't work.

Another data point: after clicking on the title bar of the window, the shortcut works. Perhaps it's some kind of window focus issue?

Another data point (as I'm still seeing this): simply clicking the mouse on the title bar of the already-active window makes Super+arrow actions work again.

How can I debug this?

(In reply to Tim Waugh from comment #3)
> Another data point (as I'm still seeing this): simply clicking the mouse on
> the title bar of the already-active window makes Super+arrow actions work
> again.
> 
> How can I debug this?

For a start, you could use Looking Glass[0] to confirm that global.display.focus_window points to the expected window.

[0] https://wiki.gnome.org/Projects/GnomeShell/LookingGlass

Oh, here's a pretty stupid idea - while the window-switch keybinding is "active" (popup showing/fading out), all other shortcuts are disabled. Maybe you are hitting super-left quickly enough to hit that time window? Does it work if you try again a moment later?

No, once it's not working it stays not working until I use the mouse to focus the active window.

Next time I see it I'll see what global.display.focus_window is.

Just happened. The windows affected are:

Evolution
Evolution message window

Usually it's Firefox that's affected, but in this instance I have a Firefox window open that *is* responding to Super+arrow. It's currently maximised-to-right.

I can Alt-Tab to Evolution (main window). When I do that, Super+arrow simply passes the arrow key through to the application (Super+Down advances to the next message in the list).

Same if I Alt-` to the Evolution message window, except that it isn't clear whether the arrow key is passed through to the application as there is nothing it would affect.

I have a few other windows open. Using Alt-Tab to select any of those, I can subsequently use Super+arrow window action successfully.

As a final test, not expecting it would have any effect, I used Super+Down on this Firefox window to unmaximise it. After doing this, and using Alt-Tab to get to the Evolution message window, Super+arrow keys worked successfully. Somehow, unmaximising Firefox managed to "unstick" the Evolution windows so that Window action keys would work on them again.

Hope you can make some sense of what might be causing this. (I can't!)

Oh, I never reported what global.display.focus_window said: the answer is that it shows the window that I expect it to be (verified with .get_title()).

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