Public bug reported: On Xubuntu 18.04, if it's set on power manager settings to suspend the notebook if the lid is closed, when it's open, the login screen appears but after the login the screen turns off. It was observed with xrandr that no resolution is set. To fix this, I have to do one of these three actions:
1) Use the xrandr command blindly; 2) Restart LightDM from a TTY; 3) Reboot. When suspending using the Whisker Menu or using systemctl suspend, the notebook panel turns on normally after login. It's happening only when suspending by closing the notebook lid. Maybe it detects no screen connected and then unset all resolutions? The notebook model page is: https://pcsupport.lenovo.com/br/pt/products /laptops-and-netbooks/300-series/310-14isk/80ug/80ug0000br ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: lightdm 1.26.0-0ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-45.48-generic 4.15.18 Uname: Linux 4.15.0-45-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 CurrentDesktop: XFCE Date: Fri Mar 1 12:24:33 2019 InstallationDate: Installed on 2017-06-13 (625 days ago) InstallationMedia: Xubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) SourcePackage: lightdm UpgradeStatus: Upgraded to bionic on 2017-10-20 (497 days ago) ** Affects: lightdm (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1818249 Title: Panel screen does not turn on after login if notebook was suspended by closing the lid Status in lightdm package in Ubuntu: New Bug description: On Xubuntu 18.04, if it's set on power manager settings to suspend the notebook if the lid is closed, when it's open, the login screen appears but after the login the screen turns off. It was observed with xrandr that no resolution is set. To fix this, I have to do one of these three actions: 1) Use the xrandr command blindly; 2) Restart LightDM from a TTY; 3) Reboot. When suspending using the Whisker Menu or using systemctl suspend, the notebook panel turns on normally after login. It's happening only when suspending by closing the notebook lid. Maybe it detects no screen connected and then unset all resolutions? The notebook model page is: https://pcsupport.lenovo.com/br/pt/products/laptops-and- netbooks/300-series/310-14isk/80ug/80ug0000br ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: lightdm 1.26.0-0ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-45.48-generic 4.15.18 Uname: Linux 4.15.0-45-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 CurrentDesktop: XFCE Date: Fri Mar 1 12:24:33 2019 InstallationDate: Installed on 2017-06-13 (625 days ago) InstallationMedia: Xubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) SourcePackage: lightdm UpgradeStatus: Upgraded to bionic on 2017-10-20 (497 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1818249/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
