You have been subscribed to a public bug: To reproduce from the command-line (this is ubuntu 18.04):
% gsettings set org.gnome.desktop.screensaver ubuntu-lock-on-suspend true % gsettings get org.gnome.desktop.screensaver ubuntu-lock-on-suspend true % systemctl suspend Now the monitors go black and report "no signal" (good), and it will stay that way for hours (good) ... but if I tap "shift" key a few times, Ubuntu 18.04 comes back without asking my password. (I expected rather that the system would be locked, i.e. I should see a dialog box that would require a password before anything else!) Same thing if I suspend by using the upper-right-of-screen "power" icon (click-and-hold, then click on the suspend icon). Same thing if I let 20 minutes go by. (A msg comes up ~~ "system will suspend soon...", and it does suspend, but doesn't lock). I have left the ubuntu-lock-on-suspend setting at "true" through several re-boots, but it still doesn't take effect. I get the same behavior whether ubuntu-lock-on-suspend is set to "true" or "false". Other info: % wmctrl -m Name: GNOME Shell Class: N/A PID: N/A Window manager's "showing the desktop" mode: N/A % lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.1 LTS Release: 18.04 Codename: bionic % uname -a Linux ucbvax 4.15.0-36-generic #39-Ubuntu SMP Mon Sep 24 16:19:09 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux I just upgraded from 16.04 a couple of weeks ago. I think (90%) it was locking in 16.04, but now not locking in 18.04. If I click on the upper-right-of-screen padlock icon, then the system does lock (password required). While it's locked in that way, I can click on the upper-right-of-screen "suspend" (from drop-down), and then my system is both suspended and locked. But the question is ... How can I make my system lock (automatically) every time a "suspend" happens? (Or even "every time kbd and mouse are idle for 15 minutes"?) Please advise. thanks ** Affects: linux (Ubuntu) Importance: Undecided Status: Incomplete -- suspend does not lock in 18.04 https://bugs.launchpad.net/bugs/1798615 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp