Fix missing wl_surface.enter events for outputs enabled at runtime.

[hbatagelo]

In my previous fix for #3414, I accidentally disabled sending wl_surface.enter events for surfaces on outputs enabled at runtime. This PR resolves that issue while still addressing #3414.

[AlanGriffiths]

[This may be spurious - I just noticed the amd64 snap build failed and I was testing edge]

Trying this (miriway --channel=edge/mir-pr3585) I find that disconnecting an external monitor gives:

[1204127.872] [email protected](nil)

When the display adapts (not sure "nil" is the best we can do but...)

When reconnecting again:

expect: an enter event when the display adapts
actual: there's no enter

Curiously, when disabling & enabling the same output I do see the enter event as expected.

[AlanGriffiths]

Yep

[tarek-y-ismail]

[This may be spurious - I just noticed the amd64 snap build failed and I was testing edge]

Trying this (miriway --channel=edge/mir-pr3585) I find that disconnecting an external monitor gives:

[1204127.872] [email protected](nil)

When the display adapts (not sure "nil" is the best we can do but...)

When reconnecting again:

expect: an enter event when the display adapts actual: there's no enter

Curiously, when disabling & enabling the same output I do see the enter event as expected.

So disconnecting and reconnecting the monitor physically doesn't call enter, but disabling/re-enabling it through software does?

[AlanGriffiths]

So disconnecting and reconnecting the monitor physically doesn't call enter, but disabling/re-enabling it through software does?

Weird huh? (But I was testing main, not this PR)

[tarek-y-ismail]

Well, when I use i3 and physically disconnect the HDMI on my external monitor, it doesn't call xrandr to update the output state, maybe this is a similar situation?

[hbatagelo]

Hmm, miriway --channel=edge/mir-pr3585 works fine for me:

$ WAYLAND_DEBUG=1 gnome-calculator 2>&1 | grep -E "wl_surface.*?(enter|leave)"
[ 244392.196] [email protected](wl_output@16)

Unplug HDMI:

[ 249616.380] [email protected](wl_output@16)

Plug it back:

[ 253946.082] [email protected](wl_output@29)

[AlanGriffiths]

Hmm, miriway --channel=edge/mir-pr3585 works fine for me:

See "This may be spurious - I just noticed the amd64 snap build failed and I was testing edge"