自从更新到 Ubuntu 21.10 以来，我的锁屏不再工作。我正在使用 budgie 桌面并按Super+L锁定屏幕，这在系统日志中发生：
\nOct 30 07:58:35 lenovo gsd-media-keys[9616]: message repeated 10 times: [ Couldn't lock screen: GDBus.Error:org.freedes\nktop.DBus.Error.ServiceUnknown: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.Shell.ScreenS\nhield was not provided by any .service files]\nOct 30 08:01:21 lenovo budgie-panel.desktop[122417]: WARNING : Error getting shell mode\nOct 30 08:01:21 lenovo budgie-panel.desktop[122417]: CRITICAL: Error getting shell version\nOct 30 08:01:21 lenovo budgie-panel.desktop[122417]: WARNING : Could not list shell extensions\nOct 30 08:01:21 lenovo budgie-panel.desktop[122417]: Traceback (most recent call last):\nOct 30 08:01:21 lenovo budgie-panel.desktop[122417]: File …