I believe I've been running into this same bug as well. I've had it with Ubuntu 18.04 and now 20.04 both running as a VM under VirtualBox on Windows 20.
I've been able to configure the settings such that the screen will stay on seemingly indefinitely once logged in. The issue occurs at the login greeter screen. I've tried changing the settings mentioned above for both the logged in user account and for the gdm user. I've also tried to configure them via /usr/share/gdm/greeter .dconf-defaults Nothing makes any difference at the login screen. After ~20 minutes the VM's screen goes black and at that point will not come back it just stays black. I am still able to SSH into the VM (which is how I often make use of the vm, though I often do need to access it's GUI.) If anyone has any idea what could be causing the login screen to blank, I'd really appreciate it. I end up having to restart the VM whenever this happens. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1773810 Title: Power Saving's screen blanking cannot be disabled, even with AC Status in gnome-settings-daemon package in Ubuntu: Confirmed Bug description: After upgrading to 18.04, whenever I use my laptop's screen (as opposed to an external monitor) and I'm connected to power, the screen goes dark after ~20 seconds even though I have "Dim screen when inactive" off and "Blank screen" set to Never. I even tried changing the settings listed at https://askubuntu.com/a/1037753/24860 and https://askubuntu.com/questions/1001198/screen-turning-off-when-idle- even-with-power-settings-disabled. Those had no effect either. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gnome-settings-daemon 3.28.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17 Uname: Linux 4.15.0-22-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon May 28 10:24:37 2018 EcryptfsInUse: Yes ExecutablePath: /usr/lib/gnome-settings-daemon/gsd-power ProcEnviron: LANGUAGE=en_CA:en PATH=(custom, user) XDG_RUNTIME_DIR=<set> LANG=en_CA.UTF-8 SHELL=/bin/zsh SourcePackage: gnome-settings-daemon UpgradeStatus: Upgraded to bionic on 2018-05-19 (8 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1773810/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
