Public bug reported: Since I upgraded to 16.04, my display does not always come up when I boot. The grub land display comes up for selection of what to boot, then after choosing, the display goes blank. I can hear when system loads to logon page because system makes the alert sound for when that page comes up, but my screen continues to be blank. I am guessing that this has something to do with lightdm, but I have very little skills for delving into such issues. Sometimes I can close the laptop lib and open it, then display will come on, but this is not always the case:
lsb_release -rd Description: Ubuntu 16.04.2 LTS Release: 16.04 apt-cache policy lightdm lightdm: Installed: 1.18.3-0ubuntu1 Candidate: 1.18.3-0ubuntu1 Version table: *** 1.18.3-0ubuntu1 500 500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages 100 /var/lib/dpkg/status 1.18.1-0ubuntu1 500 500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: lightdm 1.18.3-0ubuntu1 ProcVersionSignature: Ubuntu 4.8.0-45.48~16.04.1-generic 4.8.17 Uname: Linux 4.8.0-45-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 CurrentDesktop: Unity Date: Tue Apr 4 19:33:27 2017 InstallationDate: Installed on 2017-04-01 (3 days ago) InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2) ProcEnviron: LANGUAGE=en_US PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: lightdm (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug xenial -- 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/1679872 Title: When boot from grub, the display goes blank and can hear login page come up because of sound but display continues to be blank Status in lightdm package in Ubuntu: New Bug description: Since I upgraded to 16.04, my display does not always come up when I boot. The grub land display comes up for selection of what to boot, then after choosing, the display goes blank. I can hear when system loads to logon page because system makes the alert sound for when that page comes up, but my screen continues to be blank. I am guessing that this has something to do with lightdm, but I have very little skills for delving into such issues. Sometimes I can close the laptop lib and open it, then display will come on, but this is not always the case: lsb_release -rd Description: Ubuntu 16.04.2 LTS Release: 16.04 apt-cache policy lightdm lightdm: Installed: 1.18.3-0ubuntu1 Candidate: 1.18.3-0ubuntu1 Version table: *** 1.18.3-0ubuntu1 500 500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages 100 /var/lib/dpkg/status 1.18.1-0ubuntu1 500 500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: lightdm 1.18.3-0ubuntu1 ProcVersionSignature: Ubuntu 4.8.0-45.48~16.04.1-generic 4.8.17 Uname: Linux 4.8.0-45-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 CurrentDesktop: Unity Date: Tue Apr 4 19:33:27 2017 InstallationDate: Installed on 2017-04-01 (3 days ago) InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2) ProcEnviron: LANGUAGE=en_US PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1679872/+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