The lock screen should provide an option to make a sound on lock/unlock: https://wiki.ubuntu.com/Sound?action=AttachFile&do=get&target=phone-settings-sound.png (see the selector at the bottom of the list)
The lock screen should provide an option to make a sound on lock/unlock: /wiki.ubuntu. com/Sound? action= AttachFile& do=get& target= phone-settings- sound.png (see the selector at the bottom of the list)
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