Lock screen only becomes visible after moving the pointer

[Pete Woods]

This means you can see the screen contents until you move the pointer.

Presumably nothing is triggering a screen redraw when the lock screen becomes active (at least in a qemu VM).

This has the potential to leave personal information if an attacker knows not to touch the pointer.

[Michał Sawicz (saviq)]

@Pete, can you please give exact steps to repro? It might be different depending on whether you hit the greeter or the lock screen (which today look identical).

[Pete Woods (pete-woods)]

Definitely the lock screen, not greeter. For me, it's leaving the virt-manager window up, and doing nothing until the lock timeout happens. Then once you're sure it's happened move the pointer over the virt-manager window. Only at this point does the screen redraw and show the lock screen.