My desktop uses Kubuntu 24.04, fully updated, with KDE Plasma 5.27.12. About a week ago I decided to give Wayland another try, and this time I found everything to work smoothly, except for the fact that the Screen Energy Saving option does not seem to work... To be precise, it does work initially, once the idle time has elapsed, and the screen turns black. But it remains black for about 10 seconds only, then the screen comes back on again. Obviously, there is something overriding the settings defined (by me) in System Settings -> Power. The very same thing happens if I turn off the screen via CLI (kscreen-doctor -d off), i.e. the screen remains black for about 10 seconds, then lights up again. If I choose to put the pc in sleep/hibernate mode after the same amount of time, the screen does not light up again, but this of course is not what I want. After the screen lights up again, in System Settings -> Display and Monitor, there appears the following information: *A new output has been added. Settings have been reloaded.* I get in fact the following, interesting, output: tail -f /var/log/syslog ...... 2025-02-14T16:15:20.425314+01:00 kaus kactivitymanagerd: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:20.425640+01:00 kaus kded5: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:20.425915+01:00 kaus polkit-kde-authentication-agent-1: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:20.426185+01:00 kaus foot: warn: wayland.c:1382: unknown global removed: 0x0000004f 2025-02-14T16:15:20.426443+01:00 kaus DiscoverNotifier: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:20.426480+01:00 kaus foot: wayland: unknown global removed: 0x0000004f 2025-02-14T16:15:20.426679+01:00 kaus plasmashell: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:20.426909+01:00 kaus xdg-desktop-portal-kde: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:20.446383+01:00 kaus org_kde_powerdevil: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:20.452066+01:00 kaus org_kde_powerdevil: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:20.456716+01:00 kaus org_kde_powerdevil: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:20.477425+01:00 kaus org_kde_powerdevil: Initializing "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_fonts.so" 2025-02-14T16:15:20.487835+01:00 kaus org_kde_powerdevil: Initializing "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_fonts.so" 2025-02-14T16:15:20.492526+01:00 kaus plasmashell: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:20.524998+01:00 kaus plasmashell: Initializing "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_fonts.so" 2025-02-14T16:15:20.566383+01:00 kaus plasmashell: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:20.571856+01:00 kaus kded5: xsettingsd: Reloading configuration 2025-02-14T16:15:20.572028+01:00 kaus kded5: xsettingsd: Loaded 12 settings from /home/mario/.config/xsettingsd/xsettingsd.conf 2025-02-14T16:15:20.573351+01:00 kaus plasmashell: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:20.586841+01:00 kaus plasmashell: qt.qpa.wayland: Wayland does not support QWindow::requestActivate() 2025-02-14T16:15:20.600327+01:00 kaus plasmashell: Initializing "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_fonts.so" 2025-02-14T16:15:20.602521+01:00 kaus plasmashell: qt.qpa.wayland: Wayland does not support QWindow::requestActivate() 2025-02-14T16:15:20.606076+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:20: TypeError: Cannot read property 'pluginName' of null 2025-02-14T16:15:20.606343+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:75: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:20.606506+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:78: TypeError: Cannot read property 'pluginName' of null 2025-02-14T16:15:20.606659+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:80: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:20.606797+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:81: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:20.606941+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:82: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:20.607092+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:83: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:20.607265+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:84: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:20.607421+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:16: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:20.607579+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:17: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:20.607733+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:18: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:20.700216+01:00 kaus kded5: xsettingsd: Reloading configuration 2025-02-14T16:15:20.700254+01:00 kaus kded5: xsettingsd: Loaded 12 settings from /home/mario/.config/xsettingsd/xsettingsd.conf 2025-02-14T16:15:20.816145+01:00 kaus kwin_wayland_wrapper: OpenGL vendor string: Intel 2025-02-14T16:15:20.816430+01:00 kaus kwin_wayland_wrapper: OpenGL renderer string: Mesa Intel(R) UHD Graphics 630 (CFL GT2) 2025-02-14T16:15:20.816557+01:00 kaus kwin_wayland_wrapper: OpenGL version string: 4.6 (Core Profile) Mesa 24.2.8-1ubuntu1~24.04.1 2025-02-14T16:15:20.816656+01:00 kaus kwin_wayland_wrapper: OpenGL shading language version string: 4.60 2025-02-14T16:15:20.816745+01:00 kaus kwin_wayland_wrapper: Driver: Intel 2025-02-14T16:15:20.816825+01:00 kaus kwin_wayland_wrapper: GPU class: Coffee Lake 2025-02-14T16:15:20.816948+01:00 kaus kwin_wayland_wrapper: OpenGL version: 4.6 2025-02-14T16:15:20.817030+01:00 kaus kwin_wayland_wrapper: GLSL version: 4.60 2025-02-14T16:15:20.817110+01:00 kaus kwin_wayland_wrapper: Mesa version: 24.2.8 2025-02-14T16:15:20.817207+01:00 kaus kwin_wayland_wrapper: X server version: 1.23.2 2025-02-14T16:15:20.817330+01:00 kaus kwin_wayland_wrapper: Linux kernel version: 6.8 2025-02-14T16:15:20.817448+01:00 kaus kwin_wayland_wrapper: Requires strict binding: no 2025-02-14T16:15:20.817546+01:00 kaus kwin_wayland_wrapper: GLSL shaders: yes 2025-02-14T16:15:20.817643+01:00 kaus kwin_wayland_wrapper: Texture NPOT support: yes 2025-02-14T16:15:20.817738+01:00 kaus kwin_wayland_wrapper: Virtual Machine: no 2025-02-14T16:15:21.020900+01:00 kaus kwin_wayland_wrapper: BlurConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.023996+01:00 kaus kwin_wayland_wrapper: ZoomConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.025121+01:00 kaus kwin_wayland_wrapper: WindowViewConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.026215+01:00 kaus kwin_wayland_wrapper: SlidingPopupsConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.026382+01:00 kaus kwin_wayland_wrapper: SlideConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.026613+01:00 kaus kwin_wayland_wrapper: OverviewConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.027160+01:00 kaus kwin_wayland_wrapper: KscreenConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.027885+01:00 kaus kwin_wayland_wrapper: DesktopGridConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.500242+01:00 kaus org_kde_powerdevil: Initializing "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_fonts.so" 2025-02-14T16:15:21.532164+01:00 kaus plasmashell: Initializing "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_fonts.so" 2025-02-14T16:15:21.543067+01:00 kaus plasmashell: qt.qpa.wayland: Wayland does not support QWindow::requestActivate() 2025-02-14T16:15:21.543131+01:00 kaus plasmashell: Checking screens: available: (QScreen(0x5fedb26e8010, name="DP-3")) redundant: QHash() fake: QSet(QScreen(0x5fedb2832170, name="")) all: (QScreen(0x5fedb2832170, name=""), QScreen(0x5fedb26e8010, name="DP-3")) 2025-02-14T16:15:21.607762+01:00 kaus kded5: xsettingsd: Reloading configuration 2025-02-14T16:15:21.607819+01:00 kaus kded5: xsettingsd: Loaded 12 settings from /home/mario/.config/xsettingsd/xsettingsd.conf 2025-02-14T16:15:21.724534+01:00 kaus kwin_wayland_wrapper: OpenGL vendor string: Intel 2025-02-14T16:15:21.724669+01:00 kaus kwin_wayland_wrapper: OpenGL renderer string: Mesa Intel(R) UHD Graphics 630 (CFL GT2) 2025-02-14T16:15:21.724707+01:00 kaus kwin_wayland_wrapper: OpenGL version string: 4.6 (Core Profile) Mesa 24.2.8-1ubuntu1~24.04.1 2025-02-14T16:15:21.724742+01:00 kaus kwin_wayland_wrapper: OpenGL shading language version string: 4.60 2025-02-14T16:15:21.724769+01:00 kaus kwin_wayland_wrapper: Driver: Intel 2025-02-14T16:15:21.724802+01:00 kaus kwin_wayland_wrapper: GPU class: Coffee Lake 2025-02-14T16:15:21.724829+01:00 kaus kwin_wayland_wrapper: OpenGL version: 4.6 2025-02-14T16:15:21.724918+01:00 kaus kwin_wayland_wrapper: GLSL version: 4.60 2025-02-14T16:15:21.724948+01:00 kaus kwin_wayland_wrapper: Mesa version: 24.2.8 2025-02-14T16:15:21.724981+01:00 kaus kwin_wayland_wrapper: X server version: 1.23.2 2025-02-14T16:15:21.725010+01:00 kaus kwin_wayland_wrapper: Linux kernel version: 6.8 2025-02-14T16:15:21.725039+01:00 kaus kwin_wayland_wrapper: Requires strict binding: no 2025-02-14T16:15:21.725071+01:00 kaus kwin_wayland_wrapper: GLSL shaders: yes 2025-02-14T16:15:21.725102+01:00 kaus kwin_wayland_wrapper: Texture NPOT support: yes 2025-02-14T16:15:21.725170+01:00 kaus kwin_wayland_wrapper: Virtual Machine: no 2025-02-14T16:15:21.732241+01:00 kaus kwin_wayland_wrapper: BlurConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.733999+01:00 kaus kwin_wayland_wrapper: ZoomConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.735218+01:00 kaus kwin_wayland_wrapper: WindowViewConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.736053+01:00 kaus kwin_wayland_wrapper: SlidingPopupsConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.736185+01:00 kaus kwin_wayland_wrapper: SlideConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.736374+01:00 kaus kwin_wayland_wrapper: OverviewConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.736800+01:00 kaus kwin_wayland_wrapper: KscreenConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.737320+01:00 kaus kwin_wayland_wrapper: DesktopGridConfig::instance called after the first use - ignoring 2025-02-14T16:15:21.807503+01:00 kaus plasmashell: qt.qpa.wayland: Wayland does not support QWindow::requestActivate() 2025-02-14T16:15:21.823266+01:00 kaus plasmashell: message repeated 3 times: [ qt.qpa.wayland: Wayland does not support QWindow::requestActivate()] 2025-02-14T16:15:22.372133+01:00 kaus DiscoverNotifier: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:22.372448+01:00 kaus foot: warn: wayland.c:1382: unknown global removed: 0x00000051 2025-02-14T16:15:22.372711+01:00 kaus polkit-kde-authentication-agent-1: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:22.372930+01:00 kaus kactivitymanagerd: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:22.373094+01:00 kaus kded5: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:22.373141+01:00 kaus foot: wayland: unknown global removed: 0x00000051 2025-02-14T16:15:22.373394+01:00 kaus xdg-desktop-portal-kde: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:22.373731+01:00 kaus plasmashell: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:22.397611+01:00 kaus org_kde_powerdevil: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:22.398211+01:00 kaus org_kde_powerdevil: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:22.404861+01:00 kaus org_kde_powerdevil: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:22.419837+01:00 kaus org_kde_powerdevil: Initializing "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_fonts.so" 2025-02-14T16:15:22.427077+01:00 kaus org_kde_powerdevil: Initializing "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_fonts.so" 2025-02-14T16:15:22.451625+01:00 kaus plasmashell: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:22.488961+01:00 kaus plasmashell: Initializing "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_fonts.so" 2025-02-14T16:15:22.521557+01:00 kaus kded5: xsettingsd: Reloading configuration 2025-02-14T16:15:22.524481+01:00 kaus kded5: xsettingsd: Loaded 12 settings from /home/mario/.config/xsettingsd/xsettingsd.conf 2025-02-14T16:15:22.547828+01:00 kaus plasmashell: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:22.553843+01:00 kaus plasmashell: qt.qpa.wayland: Creating a fake screen in order for Qt not to crash 2025-02-14T16:15:22.561598+01:00 kaus plasmashell: qt.qpa.wayland: Wayland does not support QWindow::requestActivate() 2025-02-14T16:15:22.576030+01:00 kaus plasmashell: qt.qpa.wayland: Wayland does not support QWindow::requestActivate() 2025-02-14T16:15:22.577459+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:20: TypeError: Cannot read property 'pluginName' of null 2025-02-14T16:15:22.577520+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:75: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:22.577566+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:78: TypeError: Cannot read property 'pluginName' of null 2025-02-14T16:15:22.577591+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:80: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:22.577613+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:81: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:22.577639+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:82: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:22.577663+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:83: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:22.577686+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:84: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:22.577738+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:16: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:22.577761+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:17: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:22.577795+01:00 kaus plasmashell: file:///usr/share/plasma/wallpapers/org.kde.slideshow/contents/ui/main.qml:18: TypeError: Cannot read property 'configuration' of null 2025-02-14T16:15:22.582656+01:00 kaus plasmashell: Initializing "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_fonts.so" 2025-02-14T16:15:22.674442+01:00 kaus kded5: xsettingsd: Reloading configuration 2025-02-14T16:15:22.674478+01:00 kaus kded5: xsettingsd: Loaded 12 settings from /home/mario/.config/xsettingsd/xsettingsd.conf 2025-02-14T16:15:22.800943+01:00 kaus kwin_wayland_wrapper: OpenGL vendor string: Intel 2025-02-14T16:15:22.801060+01:00 kaus kwin_wayland_wrapper: OpenGL renderer string: Mesa Intel(R) UHD Graphics 630 (CFL GT2) 2025-02-14T16:15:22.801131+01:00 kaus kwin_wayland_wrapper: OpenGL version string: 4.6 (Core Profile) Mesa 24.2.8-1ubuntu1~24.04.1 2025-02-14T16:15:22.801256+01:00 kaus kwin_wayland_wrapper: OpenGL shading language version string: 4.60 2025-02-14T16:15:22.801345+01:00 kaus kwin_wayland_wrapper: Driver: Intel 2025-02-14T16:15:22.801561+01:00 kaus kwin_wayland_wrapper: GPU class: Coffee Lake 2025-02-14T16:15:22.801704+01:00 kaus kwin_wayland_wrapper: OpenGL version: 4.6 2025-02-14T16:15:22.801839+01:00 kaus kwin_wayland_wrapper: GLSL version: 4.60 2025-02-14T16:15:22.801982+01:00 kaus kwin_wayland_wrapper: Mesa version: 24.2.8 2025-02-14T16:15:22.802086+01:00 kaus kwin_wayland_wrapper: X server version: 1.23.2 2025-02-14T16:15:22.802246+01:00 kaus kwin_wayland_wrapper: Linux kernel version: 6.8 2025-02-14T16:15:22.802422+01:00 kaus kwin_wayland_wrapper: Requires strict binding: no 2025-02-14T16:15:22.802565+01:00 kaus kwin_wayland_wrapper: GLSL shaders: yes 2025-02-14T16:15:22.802709+01:00 kaus kwin_wayland_wrapper: Texture NPOT support: yes 2025-02-14T16:15:22.802906+01:00 kaus kwin_wayland_wrapper: Virtual Machine: no 2025-02-14T16:15:22.970701+01:00 kaus kwin_wayland_wrapper: BlurConfig::instance called after the first use - ignoring 2025-02-14T16:15:22.972646+01:00 kaus kwin_wayland_wrapper: ZoomConfig::instance called after the first use - ignoring 2025-02-14T16:15:22.973338+01:00 kaus kwin_wayland_wrapper: WindowViewConfig::instance called after the first use - ignoring 2025-02-14T16:15:22.974403+01:00 kaus kwin_wayland_wrapper: SlidingPopupsConfig::instance called after the first use - ignoring 2025-02-14T16:15:22.974496+01:00 kaus kwin_wayland_wrapper: SlideConfig::instance called after the first use - ignoring 2025-02-14T16:15:22.974650+01:00 kaus kwin_wayland_wrapper: OverviewConfig::instance called after the first use - ignoring 2025-02-14T16:15:22.974989+01:00 kaus kwin_wayland_wrapper: KscreenConfig::instance called after the first use - ignoring 2025-02-14T16:15:22.975489+01:00 kaus kwin_wayland_wrapper: DesktopGridConfig::instance called after the first use - ignoring 2025-02-14T16:15:23.144882+01:00 kaus org_kde_powerdevil: Initializing "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_fonts.so" 2025-02-14T16:15:23.187486+01:00 kaus plasmashell: Initializing "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_fonts.so" 2025-02-14T16:15:23.202846+01:00 kaus plasmashell: qt.qpa.wayland: Wayland does not support QWindow::requestActivate() 2025-02-14T16:15:23.202882+01:00 kaus plasmashell: Checking screens: available: (QScreen(0x5fedb2715a40, name="DP-3")) redundant: QHash() fake: QSet(QScreen(0x7058b000b3b0, name="")) all: (QScreen(0x7058b000b3b0, name=""), QScreen(0x5fedb2715a40, name="DP-3")) 2025-02-14T16:15:23.241293+01:00 kaus kded5: xsettingsd: Reloading configuration 2025-02-14T16:15:23.241339+01:00 kaus kded5: xsettingsd: Loaded 12 settings from /home/mario/.config/xsettingsd/xsettingsd.conf 2025-02-14T16:15:23.372171+01:00 kaus kwin_wayland_wrapper: OpenGL vendor string: Intel 2025-02-14T16:15:23.372240+01:00 kaus kwin_wayland_wrapper: OpenGL renderer string: Mesa Intel(R) UHD Graphics 630 (CFL GT2) 2025-02-14T16:15:23.372272+01:00 kaus kwin_wayland_wrapper: OpenGL version string: 4.6 (Core Profile) Mesa 24.2.8-1ubuntu1~24.04.1 2025-02-14T16:15:23.372302+01:00 kaus kwin_wayland_wrapper: OpenGL shading language version string: 4.60 2025-02-14T16:15:23.372333+01:00 kaus kwin_wayland_wrapper: Driver: Intel 2025-02-14T16:15:23.372393+01:00 kaus kwin_wayland_wrapper: GPU class: Coffee Lake 2025-02-14T16:15:23.372425+01:00 kaus kwin_wayland_wrapper: OpenGL version: 4.6 2025-02-14T16:15:23.372460+01:00 kaus kwin_wayland_wrapper: GLSL version: 4.60 2025-02-14T16:15:23.372498+01:00 kaus kwin_wayland_wrapper: Mesa version: 24.2.8 2025-02-14T16:15:23.372537+01:00 kaus kwin_wayland_wrapper: X server version: 1.23.2 2025-02-14T16:15:23.372572+01:00 kaus kwin_wayland_wrapper: Linux kernel version: 6.8 2025-02-14T16:15:23.372624+01:00 kaus kwin_wayland_wrapper: Requires strict binding: no 2025-02-14T16:15:23.372653+01:00 kaus kwin_wayland_wrapper: GLSL shaders: yes 2025-02-14T16:15:23.372686+01:00 kaus kwin_wayland_wrapper: Texture NPOT support: yes 2025-02-14T16:15:23.372717+01:00 kaus kwin_wayland_wrapper: Virtual Machine: no 2025-02-14T16:15:23.384230+01:00 kaus kwin_wayland_wrapper: BlurConfig::instance called after the first use - ignoring 2025-02-14T16:15:23.386218+01:00 kaus kwin_wayland_wrapper: ZoomConfig::instance called after the first use - ignoring 2025-02-14T16:15:23.386909+01:00 kaus kwin_wayland_wrapper: WindowViewConfig::instance called after the first use - ignoring 2025-02-14T16:15:23.387691+01:00 kaus kwin_wayland_wrapper: SlidingPopupsConfig::instance called after the first use - ignoring 2025-02-14T16:15:23.387765+01:00 kaus kwin_wayland_wrapper: SlideConfig::instance called after the first use - ignoring 2025-02-14T16:15:23.387968+01:00 kaus kwin_wayland_wrapper: OverviewConfig::instance called after the first use - ignoring 2025-02-14T16:15:23.388367+01:00 kaus kwin_wayland_wrapper: KscreenConfig::instance called after the first use - ignoring 2025-02-14T16:15:23.388886+01:00 kaus kwin_wayland_wrapper: DesktopGridConfig::instance called after the first use - ignoring 2025-02-14T16:15:23.489964+01:00 kaus plasmashell: qt.qpa.wayland: Wayland does not support QWindow::requestActivate() from which we can see that kactivitymanager, for some unspecified reason, decides that it must create a fake Qt screen to avoid it crashing. And this happens several times in the course of a few seconds, until the situation stabilizes, and there are no more related activities in *syslog*. Another important detail is added by a capture of the *dbus* connections: date > cap.txt; kscreen-doctor --dpms off; dbus-monitor --profile >> cap.txt and the content of the capture file, *cap.txt*, is: Fri Feb 14 04:08:49 PM CET 2025 #type timestamp serial sender destination path interface member # in_reply_to sig 1739545729.278759 2 org.freedesktop.DBus :1.68 /org/freedesktop/DBus org.freedesktop.DBus NameAcquired sig 1739545729.278766 4 org.freedesktop.DBus :1.68 /org/freedesktop/DBus org.freedesktop.DBus NameLost mc 1739545730.964295 280 :1.41 :1.49 /org/freedesktop/portal/desktop org.freedesktop.impl.portal.Background GetAppState mr 1739545730.965055 239 :1.49 :1.41 280 mc 1739545730.966093 281 :1.41 :1.43 /org/freedesktop/impl/portal/PermissionStore org.freedesktop.impl.portal.PermissionStore Lookup err 1739545730.966962 71 :1.43 :1.41 281 mc 1739545735.968323 282 :1.41 :1.49 /org/freedesktop/portal/desktop org.freedesktop.impl.portal.Background GetAppState mr 1739545735.969096 240 :1.49 :1.41 282 mc 1739545735.970145 283 :1.41 :1.43 /org/freedesktop/impl/portal/PermissionStore org.freedesktop.impl.portal.PermissionStore Lookup err 1739545735.970998 72 :1.43 :1.41 283 sig 1739545740.179599 187 :1.26 /kwinrc org.kde.kconfig.notify ConfigChanged mc 1739545740.180923 389 :1.21 org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus AddMatch The initial time of the *dbus* capture, 1739545729, corresponds to Friday, February 14, 2025 4:08:49 PM GMT+01:00, which is also the output of the *date* command immediately before the command that turns off the monitor. We see that about *11* seconds after the turning off *kwin* sends out a signal that the configuration has changed, which presumably is the consequence of *kded5* having created a fake Qt screen. But what exactly triggers this funny behavior? The amusing thing is that the very same configuration works flawlessly in an X11 session, it is broken only in a Wayland session. But despite this, it is not clear to me at all whether this is a Wayland or a KDE bug. I googled *qt.qpa.wayland: Creating a fake screen in order for Qt not to crash*, which leads to a meager two references, the most relevant of which states: > The issue is most likey in wayland or the DE as they are not closing the portal, (whatever the portal may be). But here too, no consensus was reached as to the real culprit. Can anyone help? I am at a loss, thank you.

Since around the middle of October 2020, my Arch Linux machines don't wake up the monitor anymore when I press any key in the Gnome login screen. However the machine itself is woken up, as I see my keypresses as password entries or am even locked if I press enter due to too many login attempts once I wake the monitor up by switching to another console via CTRL+ALT+Fx and back. What has changed and how can I restore the original functionality? P.S.: The problem has resurfaced with another machine in February of 2025, I will first try the "IgnoreLid=true" as it is a desktop PC and will try the workaround next if that doesn't help.

I have screen energy saving enabled, but my monitors never turn off automatically - even when the screen is locked. I can -briefly- manually turn them off using xset dpms force off, but in a couple of seconds both of my monitors turn on again, without any interaction from me. Is there a way to find out why this keeps happening? Can a running application do this, and if so, how would I identify the culprit? OS is Debian 10 64-bit with KDE 5.

My installation, Ubuntu server 14.04 with just xorg and firefox installed. The server boots up and immediatly starts firefox with the disired webpage in fullscreen mode. After 10 minutes my monitor goes to sleep. How can i disable the sleep function of the monitor?

I'm going to explain in better detail. I have two monitors: [VGA] [HDMI] HDMI (right monitor) should be the primary monitor, while the VGA the secondary monitor. I have energy saving and lock screen enabled, the issue is that when energy saving kicks in and monitors go to sleep, they immediately wake up and stay on. Also all the windows and cursor move to the left-most monitor (where primary is not checked). I observed this using Ubuntu (XFCE and KDE). I also tried Regolith, similar issue happened when monitors went to sleep, but there each second a new virtual desktop was created endlessly, instead of switching programs windows. Also as you can notice in the screenshot "An output has been removed. Settings have been reloaded". This message is showed after the monitor wakes up immediately after sleep. **What I tried**: - Partially resolved the wake up disabling Kscreen2 on KDE, but it is not an ideal solution. - udevadm control --stop, this prevents the wake up and windows switching, but it's even a worse solution. I want also to add that during boot the following message is showed: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GP17.VGA.LCD._BCM.AFN7] System Info: **uname**: - Linux finch-desktop 5.15.0-67-generic #74-Ubuntu SMP Wed Feb 22 14:14:39 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux **inxi**:

System:
  Host: finch-desktop Kernel: 5.15.0-67-generic x86_64 bits: 64 compiler: gcc
    v: 11.3.0 Desktop: KDE Plasma 5.24.7
    Distro: Ubuntu 22.04.2 LTS (Jammy Jellyfish)
Machine:
  Type: Desktop Mobo: ASRock model: A320M-HDV R4.0
    serial:  UEFI: American Megatrends v: P7.20
    date: 04/27/2022
CPU:
  Info: 6-core model: AMD Ryzen 5 5600G with Radeon Graphics bits: 64
    type: MT MCP arch: Zen 3 rev: 0 cache: L1: 384 KiB L2: 3 MiB L3: 16 MiB
  Speed (MHz): avg: 2863 high: 4450 min/max: 1400/4464 boost: enabled
    cores: 1: 2384 2: 2400 3: 2396 4: 2400 5: 2400 6: 2999 7: 2401 8: 3559
    9: 4450 10: 3560 11: 2415 12: 2998 bogomips: 93601
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
  Device-1: AMD Cezanne driver: amdgpu v: 5.18.13 bus-ID: 06:00.0
  Display: x11 server: X.Org v: 1.21.1.3 driver: X: loaded: amdgpu,ati
    unloaded: fbdev,modesetting,vesa gpu: amdgpu resolution: 1: 1920x1080~60Hz
    2: 1920x1080~60Hz
  OpenGL: renderer: RENOIR (renoir LLVM 15.0.3 DRM 3.48 5.15.0-67-generic)
    v: 4.6 Mesa 22.3.0-devel direct render: Yes
Audio:
  Device-1: AMD Renoir Radeon High Definition Audio driver: snd_hda_intel
    v: kernel bus-ID: 06:00.1
  Device-2: AMD Family 17h HD Audio vendor: ASRock driver: snd_hda_intel
    v: kernel bus-ID: 06:00.6
  Device-3: Logitech Headset H340 type: USB
    driver: hid-generic,snd-usb-audio,usbhid bus-ID: 1-2:2
  Sound Server-1: ALSA v: k5.15.0-67-generic running: yes
  Sound Server-2: PulseAudio v: 15.99.1 running: yes
  Sound Server-3: PipeWire v: 0.3.48 running: yes
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: ASRock driver: r8169 v: kernel port: f000 bus-ID: 05:00.0
  IF: enp5s0 state: up speed: 100 Mbps duplex: full mac: a8:a1:59:5b:4d:4b
  IF-ID-1: docker0 state: down mac: 02:42:f8:4c:05:70
  IF-ID-2: ham0 state: unknown speed: 10 Mbps duplex: full
    mac: 7a:79:19:3e:f8:72
Drives:
  Local Storage: total: 5.01 TiB used: 737.2 GiB (14.4%)
  ID-1: /dev/sda vendor: Western Digital model: WD5002ABYS-02B1B0
    size: 465.76 GiB
  ID-2: /dev/sdb vendor: Crucial model: CT500MX500SSD1 size: 465.76 GiB
  ID-3: /dev/sdc vendor: Toshiba model: DT01ACA050 size: 465.76 GiB
  ID-4: /dev/sdd type: USB vendor: Kingston model: DataTraveler 3.0
    size: 7.2 GiB
  ID-5: /dev/sdf type: USB vendor: Toshiba model: EXTERNAL USB
    size: 3.64 TiB
Partition:
  ID-1: / size: 456.89 GiB used: 165.52 GiB (36.2%) fs: ext4 dev: /dev/sdb2
  ID-2: /boot/efi size: 512 MiB used: 6.1 MiB (1.2%) fs: vfat
    dev: /dev/sda2
Swap:
  ID-1: swap-1 type: file size: 2 GiB used: 0 KiB (0.0%) file: /swapfile
Sensors:
  System Temperatures: cpu: N/A mobo: N/A gpu: amdgpu temp: 28.0 C
  Fan Speeds (RPM): N/A
Info:
  Processes: 383 Uptime: 46m Memory: 10.57 GiB used: 4.2 GiB (39.7%)
  Init: systemd runlevel: 5 Compilers: gcc: 11.3.0 Packages: 2278 Shell: Bash
  v: 5.1.16 inxi: 3.3.13

**lspci**:

00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne Root Complex
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:02.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus
00:08.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 51)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 7
01:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Device 43bc (rev 02)
01:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] Device 43b8 (rev 02)
01:00.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43b3 (rev 02)
02:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02)
02:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02)
02:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02)
05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cezanne (rev c9)
06:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Renoir Radeon High Definition Audio Controller
06:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) Platform Security Processor
06:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1
06:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1
06:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) HD Audio Controller
07:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 81)
07:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 81)

**udevadm monitor logs when the issue happens**:

KERNEL[626.770830] change   /devices/pci0000:00/0000:00:08.1/0000:06:00.0/drm/card0 (drm)
ACTION=change
DEVPATH=/devices/pci0000:00/0000:00:08.1/0000:06:00.0/drm/card0
SUBSYSTEM=drm
HOTPLUG=1
DEVNAME=/dev/dri/card0
DEVTYPE=drm_minor
SEQNUM=4457
MAJOR=226
MINOR=0

UDEV  [626.777794] change   /devices/pci0000:00/0000:00:08.1/0000:06:00.0/drm/card0 (drm)
ACTION=change
DEVPATH=/devices/pci0000:00/0000:00:08.1/0000:06:00.0/drm/card0
SUBSYSTEM=drm
HOTPLUG=1
DEVNAME=/dev/dri/card0
DEVTYPE=drm_minor
SEQNUM=4457
USEC_INITIALIZED=4036211
ID_PATH=pci-0000:06:00.0
ID_PATH_TAG=pci-0000_06_00_0
ID_FOR_SEAT=drm-pci-0000_06_00_0
MAJOR=226
MINOR=0
DEVLINKS=/dev/dri/by-path/pci-0000:06:00.0-card
TAGS=:snap_barrier_barriers:snap_remmina_remmina:seat:snap_barrier_barrierc:uaccess:snap_barrier_barrier:snap_chromium_chromium:snap_telegram-desktop_telegram-desktop:snap_firefox_geckodriver:snap_chromium_chromedriver:master-of-seat:snap_firefox_firefox:
CURRENT_TAGS=:snap_barrier_barrier:master-of-seat:snap_firefox_geckodriver:snap_firefox_firefox:snap_chromium_chromedriver:uaccess:snap_barrier_barrierc:snap_barrier_barriers:snap_telegram-desktop_telegram-desktop:seat:snap_remmina_remmina:snap_chromium_chromium:

KERNEL[627.349125] change   /devices/pci0000:00/0000:00:08.1/0000:06:00.0/drm/card0 (drm)
ACTION=change
DEVPATH=/devices/pci0000:00/0000:00:08.1/0000:06:00.0/drm/card0
SUBSYSTEM=drm
HOTPLUG=1
DEVNAME=/dev/dri/card0
DEVTYPE=drm_minor
SEQNUM=4458
MAJOR=226
MINOR=0

UDEV  [627.355763] change   /devices/pci0000:00/0000:00:08.1/0000:06:00.0/drm/card0 (drm)
ACTION=change
DEVPATH=/devices/pci0000:00/0000:00:08.1/0000:06:00.0/drm/card0
SUBSYSTEM=drm
HOTPLUG=1
DEVNAME=/dev/dri/card0
DEVTYPE=drm_minor
SEQNUM=4458
USEC_INITIALIZED=4036211
ID_PATH=pci-0000:06:00.0
ID_PATH_TAG=pci-0000_06_00_0
ID_FOR_SEAT=drm-pci-0000_06_00_0
MAJOR=226
MINOR=0
DEVLINKS=/dev/dri/by-path/pci-0000:06:00.0-card
TAGS=:master-of-seat:snap_barrier_barrier:snap_barrier_barrierc:snap_chromium_chromedriver:snap_remmina_remmina:uaccess:snap_chromium_chromium:snap_barrier_barriers:snap_telegram-desktop_telegram-desktop:snap_firefox_firefox:snap_firefox_geckodriver:seat:
CURRENT_TAGS=:snap_remmina_remmina:snap_chromium_chromedriver:snap_firefox_geckodriver:snap_telegram-desktop_telegram-desktop:snap_firefox_firefox:snap_barrier_barrier:master-of-seat:snap_chromium_chromium:uaccess:snap_barrier_barrierc:seat:snap_barrier_barriers:

Thank you for reading. **Edit**: - Tried Fedora KDE, same issue - Solus KDE, same issue - Solus Budgie, same issue

On my MX Linux XFCE environment I have the problem that after a certain time without interaction after power on the HDMI signal is lost and can only be retrieved with pressing a keyboard key. I would that the HDMI signal or display never switched off. I have already deactivated DPMS and the screensaver. Apparently this is not enough. Do you have any ideas about the possible cause? I'm using a nvidia optimus card if this information is relevant. $ xset -q ... Keyboard Control: auto repeat: on key click percent: 0 LED mask: 00000000 XKB indicators: 00: Caps Lock: off 01: Num Lock: off 02: Scroll Lock: off 03: Compose: off 04: Kana: off 05: Sleep: off 06: Suspend: off 07: Mute: off 08: Misc: off 09: Mail: off 10: Charging: off 11: Shift Lock: off 12: Group 2: off 13: Mouse Keys: off auto repeat delay: 500 repeat rate: 20 auto repeating keys: 00ffffffdffffbbf fadfffefffedffff 9fffffffffffffff fff7ffffffffffff bell percent: 50 bell pitch: 400 bell duration: 100 Pointer Control: acceleration: 22/5 threshold: 4 Screen Saver: prefer blanking: yes allow exposures: yes timeout: 0 cycle: 600 Colors: default colormap: 0x22 BlackPixel: 0x0 WhitePixel: 0xffffff Font Path: /usr/share/fonts/X11/misc,/usr/share/fonts/X11/100dpi/:unscaled,/usr/share/fonts/X11/75dpi/:unscaled,/usr/share/fonts/X11/Type1,/usr/share/fonts/X11/100dpi,/usr/share/fonts/X11/75dpi,built-ins DPMS (Energy Star): Standby: 600 Suspend: 600 Off: 600 DPMS is Disabled $ xdg-screensaver status disabled

When I run xbacklight I get xbacklight No outputs have backlight property I've seen other posts mentions this but I do have a /sys/class/backlight/intel_backlight. I can write to the file and this works perfectly fine echo 1000 > /sys/class/backlight/intel_backlight/brightness # (dim) echo 4000 > /sys/class/backlight/intel_backlight/brightness # (bright) I'm using the Intel i915 video driver.

Intending to switch off the display/monitor/screen instantly (and only be reenabled upon keypress) I resort to this solution: * a /bin/blankvt script: #!/bin/sh echo 1 > /sys/devices/pci0000:00/0000:00:02.0/graphics/fb0/blank read keypress chvt 2 * a /bin/blank script: #!/bin/sh openvt -s -f -c 40 /bin/blankvt Having setup this I can simply call blank on the command line and the screen will go off and energy is saved. Great! While this solution works right now, it appears hackish and brittle and what I seek is the correct way to achieve the same effect. Typing blank at the shell prompt should result in the screen to be turned off. My question hence: how can I switch of the monitor "*correctly*"? **Background/Motivation** I am not connected to the electrical grid, conserving energy is paramount to me. I need to have the laptop/PC do some calculations but would desire to turn off the superflous energy consumption by the display (which seems a non neglectible consumer anyway). Best if I could achieve this within: - GNOME Shell 3.32.2. - Linux 5.xx

Is there a way to access, set gnome system-settings from the command-line? I'm specifically interested in a way to set: settings -> energy -> screen off = never settings -> energy -> screen off = (N) minue(s) I would like to access this settings from a bash script, so I could set screen-off to never when the script starts and back to (N) minue(s) before the script exits. I hope my question is clear, since I just translated the menu hierarchy from a German-GUI. I tried to find a setting with gsettings but could not really get my way through.

I found this answer to make my screen go blank with xset dpms force off. But most of the times it only works for a brief moment and the screen comes back. I never managed to get this to work an second try or a second time if it worked the first time. Is there a trick to this that I missed?

I just installed Linux on a laptop of mine (it's Lubuntu 15.04 on a Lenovo X201, Core i5 M540, 2GB mem). I'm currently seeing 21580 mW power draw with a couple of apps open (Firefox with a few tabs and Ghostery, and LibreOffice Writer). I haven't tweaked the system in any way, and am using the stock kernel; this means ~3h or so of battery life with my model and my current battery. What should I / can I do to reduce the power draw? I'd rather get generally-useful advice rather than something specific to the distro or apps I'm using just now (but distro-specific advice is also relevant). Notes: - I am willing to turn off some hardware functionality, as long as it's very easy for me to turn it back on when I need to.

We are using a Debian 7 machine with the default GNOME 3 installation to display content on an information display. This display needs to remain on until the connected computer is switched off. However, GNOME 3 switches the display off after a few minutes. I can't seem to find a way to control this behaviour in either the system settings tools nor using dconf-editor. There is a prominent Google hit suggesting to change the org.gnome.settings-daemon.plugins.power sleep-display-ac org.gnome.settings-daemon.plugins.power sleep-display-battery org.gnome.desktop.session idle-delay keys, but this did not change anything. So, how does one control and disable screen blanking in GNOME 3?

I have two commands: * one I'd like to execute when computer enters "Screen Energy Saving" mode, * another when it exists this state. How to trigger those commands depending on "Screen Energy Saving" ? (I use KDE 4.13.0, and above is feature of KDE's "Power Management")