我在 Jessie 上，升級到 Stretch，然後立即升級到 Buster。我相信我有預設的 gnome 3 桌面管理器。如果我使用 super-l 鎖定螢幕，則無法使用滑鼠或鍵盤再次喚醒螢幕（但滾動鎖定/數字鎖定確實會切換鍵盤 LED）。如果我啟動後不登入也會發生這種情況，登入畫面會在 5 分鐘後自動鎖定。我認為 5 分鐘來自 org.gnome.desktop.sessionidle-delay uint32 300，因此將其設置為 0 可能會阻止它自動鎖定，但這並不能解釋為什麼它不重新打開。請注意，機器不會暫停，只是關閉顯示器。我相信我用 org.gnome.settings-daemon.plugins.power sleep-inactive-ac-type 'nothing' 禁用了暫停。這是一台桌上型電腦，始終使用交流電，從不使用電池。
我可以透過 ssh 恢復畫面：
sudo systemctl restart gdm.service
一些可能表明某些內容的 gsettings：
$ gsettings list-recursively org.gnome.desktop.screensaver
org.gnome.desktop.screensaver picture-opacity 100
org.gnome.desktop.screensaver logout-enabled false
org.gnome.desktop.screensaver lock-enabled false
org.gnome.desktop.screensaver logout-delay uint32 7200
org.gnome.desktop.screensaver embedded-keyboard-enabled false
org.gnome.desktop.screensaver primary-color '#023c88'
org.gnome.desktop.screensaver idle-activation-enabled true
org.gnome.desktop.screensaver secondary-color '#5789ca'
org.gnome.desktop.screensaver logout-command ''
org.gnome.desktop.screensaver color-shading-type 'solid'
org.gnome.desktop.screensaver embedded-keyboard-command ''
org.gnome.desktop.screensaver picture-options 'zoom'
org.gnome.desktop.screensaver lock-delay uint32 0
org.gnome.desktop.screensaver show-full-name-in-top-bar true
org.gnome.desktop.screensaver picture-uri 'file:///usr/share/images/desktop-base/desktop-lockscreen.xml'
org.gnome.desktop.screensaver status-message-enabled true
org.gnome.desktop.screensaver user-switch-enabled true
$ gsettings list-recursively org.gnome.desktop.session
org.gnome.desktop.session session-name 'gnome'
org.gnome.desktop.session idle-delay uint32 0
$ gsettings list-recursively org.gnome.desktop.lockdown
org.gnome.desktop.lockdown disable-command-line false
org.gnome.desktop.lockdown disable-application-handlers false
org.gnome.desktop.lockdown disable-user-switching false
org.gnome.desktop.lockdown user-administration-disabled false
org.gnome.desktop.lockdown disable-printing false
org.gnome.desktop.lockdown disable-log-out false
org.gnome.desktop.lockdown disable-lock-screen false
org.gnome.desktop.lockdown disable-print-setup false
org.gnome.desktop.lockdown disable-save-to-disk false
org.gnome.settings-daemon.plugins.power power-button-action 'interactive'
org.gnome.settings-daemon.plugins.power idle-dim true
org.gnome.settings-daemon.plugins.power sleep-inactive-ac-type 'nothing'
org.gnome.settings-daemon.plugins.power sleep-inactive-battery-timeout 1800
org.gnome.settings-daemon.plugins.power sleep-inactive-battery-type 'nothing'
org.gnome.settings-daemon.plugins.power sleep-inactive-ac-timeout 3600
org.gnome.settings-daemon.plugins.power ambient-enabled true
org.gnome.settings-daemon.plugins.power idle-brightness 30
$ sudo -u Debian-gdm gsettings list-recursively org.gnome.desktop.screensaver
org.gnome.desktop.screensaver picture-opacity 100
org.gnome.desktop.screensaver logout-enabled false
org.gnome.desktop.screensaver lock-enabled true
org.gnome.desktop.screensaver logout-delay uint32 7200
org.gnome.desktop.screensaver embedded-keyboard-enabled false
org.gnome.desktop.screensaver primary-color '#023c88'
org.gnome.desktop.screensaver idle-activation-enabled true
org.gnome.desktop.screensaver secondary-color '#5789ca'
org.gnome.desktop.screensaver logout-command ''
org.gnome.desktop.screensaver color-shading-type 'solid'
org.gnome.desktop.screensaver embedded-keyboard-command ''
org.gnome.desktop.screensaver picture-options 'zoom'
org.gnome.desktop.screensaver lock-delay uint32 0
org.gnome.desktop.screensaver show-full-name-in-top-bar true
org.gnome.desktop.screensaver picture-uri 'file:///usr/share/images/desktop-base/desktop-lockscreen.xml'
org.gnome.desktop.screensaver status-message-enabled true
org.gnome.desktop.screensaver user-switch-enabled true
$ sudo -u Debian-gdm gsettings list-recursively org.gnome.desktop.session
org.gnome.desktop.session session-name 'gnome'
org.gnome.desktop.session idle-delay uint32 300
$ sudo -u Debian-gdm gsettings list-recursively org.gnome.desktop.lockdown
org.gnome.desktop.lockdown disable-command-line false
org.gnome.desktop.lockdown disable-application-handlers false
org.gnome.desktop.lockdown disable-user-switching false
org.gnome.desktop.lockdown user-administration-disabled false
org.gnome.desktop.lockdown disable-printing false
org.gnome.desktop.lockdown disable-log-out false
org.gnome.desktop.lockdown disable-lock-screen false
org.gnome.desktop.lockdown disable-print-setup false
org.gnome.desktop.lockdown disable-save-to-disk false
$ sudo -u Debian-gdm gsettings list-recursively org.gnome.settings-daemon.plugins.power
org.gnome.settings-daemon.plugins.power power-button-action 'suspend'
org.gnome.settings-daemon.plugins.power idle-dim true
org.gnome.settings-daemon.plugins.power sleep-inactive-ac-type 'nothing'
org.gnome.settings-daemon.plugins.power sleep-inactive-battery-timeout 1200
org.gnome.settings-daemon.plugins.power sleep-inactive-battery-type 'suspend'
org.gnome.settings-daemon.plugins.power sleep-inactive-ac-timeout 1200
org.gnome.settings-daemon.plugins.power ambient-enabled true
org.gnome.settings-daemon.plugins.power idle-brightness 30
更新
我編輯了 /etc/gdm3/daemon.conf 並取消註解 WaylandEnable=false：
[daemon]
# Uncomment the line below to force the login screen to use Xorg
WaylandEnable=false
現在，當我按下某個按鍵時，螢幕會正常顯示。所以這似乎與韋蘭有關。我不知道如何調試它或如何啟用更詳細的日誌記錄以嘗試縮小問題範圍。
更多資訊：
$ sudo lspci -nnk | egrep "VGA|3D|Display" -A2
0b:07.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] ES1000 [1002:515e] (rev 02)
Subsystem: Dell PowerEdge T300 Embedded ATI ES1000 [1028:0210]
Kernel driver in use: radeon