4 ms·
FWIW this is a known security bug at Apple. I filed a bug about similar behavior where you can see the desktop briefly without logging in. Apple marked it as a
by y3sh 9y ago
FWIW this is a known security bug at Apple. I filed a bug about similar behavior where you can see the desktop briefly without logging in. Apple marked it as a duplicate. https://imgur.com/YxXtU2y https://imgur.com/YxXtU2y
Here are the steps to reproduce:
- Start Mac
- Login
- Turn on Screen Lock: System Preferences > Security > General > Check "Require Password" and Select 5 Seconds.
- Turn on Hot Corner Sleep Display: System Preferences > Mission Control > Hot Corners > Select upper left > Put Display to Sleep > Ok
- Attach external monitor
- Activate hot corner by dragging mouse to upper left corner of screen
- Wait 6 seconds
- Click the mouse to trigger waking the screen
- See brief flash of the desktop without logging in!
- deleted 9y ago[deleted]
- Lxr 9y agoThe desktop flash happens regularly to me when simply attaching an external monitor to my closed locked machine.
- Anselmo321 9y agoI used to get the desktop flash reliably by simplistische disconnecting or reconnecting an external monitor. High Sierra fixed it.
- drunken-serval 9y agoJust FYI, this works on 10.10 (Mavericks).
- fny 9y agoI actually think I've experienced something similar across every OS I've ever used. With Linux distros I was always able to trigger it by opening and closing the lid a few times. With Windows, I don't remember the exact sequence or what version. Overall, there appears to be something funky with this overlay technique and how things are asynchronously rendered.