I tried duplicating #3 but all I got was a notification
"Automatic Suspend
Computer will suspend very soon because of inactivity."
But it doesn't actually auto-suspend. So maybe it's a bit annoying to have that notification but not a critical bug. If you think that's a worthwhile bug, please file that bug separately.
For #1, to resume from suspend, click in the VirtualBox menu: Machine > ACPI Shutdown.
While not very intuitive, it vaguely makes sense that pressing the virtual power button would be a way to resume a computer from suspend if mouse or keyboard input doesn't work and there is no lid to open.
I tried duplicating #3 but all I got was a notification
"Automatic Suspend
Computer will suspend very soon because of inactivity."
But it doesn't actually auto-suspend. So maybe it's a bit annoying to have that notification but not a critical bug. If you think that's a worthwhile bug, please file that bug separately.
For #1, to resume from suspend, click in the VirtualBox menu: Machine > ACPI Shutdown.
While not very intuitive, it vaguely makes sense that pressing the virtual power button would be a way to resume a computer from suspend if mouse or keyboard input doesn't work and there is no lid to open.
So I'm going to reassign this bug to VirtualBox.