Public bug reported:
Context: I usually set the lock delay to 30 minutes, and do it via
gsettings since GNOME Settings allows values of 15 min max.
Problem: This value is reset to "uint32 0" (zero) when I click the tab
Privacy & Security in GNOME Settings. Since the change happens silently
the user will not be aware of it.
Example to replicate:
1. Open terminal and set a custom delay value (30 min in this case):
$ gsettings set org.gnome.desktop.session idle-delay 1800
2. Monitor the key for change:
$ gsettings monitor org.gnome.desktop.session idle-delay
3. Open GNOME Settings and click "Privacy & Security"
4. The key is changed, on step 3, to "uint32 0" as seen in the terminal
monitoring the key:
$ gsettings monitor org.gnome.desktop.session idle-delay
idle-delay: uint32 0
The option to lock the screen after a delay can be set in (at least) three
different locations:
1. Settings -> Power -> Screen Blank
2. Settings -> Privacy & Security -> Screen Lock -> Blank Screen Delay
3. $ gsettings set org.gnome.desktop.session idle-delay 1800
(1 and 2 are drop-down lists going from "Never" up to "15 minutes". In
3, I used "1800" = 30 min.)
The issue only happens when I click the tab "Privacy & Settings" (I
believe this tab is new in Ubuntu 24.04, I don't recall seeing it in
20.04 or 22.04). I can click all other tabs, including the tab "Power",
without problem.
I was able to replicate the issue in another laptop, also with Ubuntu
24.04.
Machine details
----------------------------------------
$ lsb_release -rd
No LSB modules are available.
Description: Ubuntu 24.04.1 LTS
Release: 24.04
$ apt-cache policy gnome-shell
gnome-shell:
Installed: 46.0-0ubuntu6~24.04.5
Candidate: 46.0-0ubuntu6~24.04.5
Version table:
*** 46.0-0ubuntu6~24.04.5 500
500 http://pt.archive.ubuntu.com/ubuntu noble-updates/main amd64
Packages
100 /var/lib/dpkg/status
46.0-0ubuntu6~24.04.3 500
500 http://security.ubuntu.com/ubuntu noble-security/main amd64 Packages
46.0-0ubuntu5 500
500 http://pt.archive.ubuntu.com/ubuntu noble/main amd64 Packages
$ apt-cache policy gnome-screensaver
gnome-screensaver:
Installed: (none)
Candidate: 3.6.1-13ubuntu4
Version table:
3.6.1-13ubuntu4 500
500 http://pt.archive.ubuntu.com/ubuntu noble/universe amd64 Packages
Note I thought the idle-delay was part of package gnome-screensaver but
it turns out I don't even have it installed. The package description
says "This package is not necessary in the GNOME desktop environment,
because GNOME Shell contains its own screen lock implementation. (...)"
so I filled this bug under gnome-shell.
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
--
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Desktop Bugs, which is subscribed to gnome-shell in Ubuntu.
https://bugs.launchpad.net/bugs/2083869
Title:
Screen Blank delay (idle-delay) is set to 0 (zero) by clicking Privacy
& Security tab in Settings
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https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/2083869/+subscriptions
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