After upgrading packages (and kernel to 4.4.0-11-generic), the problem persists.
However, there seems to be a workaround : booting with the nomodeset option allows to hibernate and resume properly. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pm-utils in Ubuntu. https://bugs.launchpad.net/bugs/1554509 Title: Screen remains black after resume from hibernation Status in pm-utils package in Ubuntu: New Bug description: I am currently testing Xubuntu 16.04 beta. Hibernation does not work properly. I ran sudo pm-hibernate, then rebooted. The hibernation part itself seems to work nice. Resuming presents the following behaviour : - the booting sequence starts - the console shows the progress of the resuming process (10%, 20%, etc.) - my monitor switches to graphical mode like I would expect, but it then remains black instead of showing my desktop. It does not go to "sleep mode" like it does when the computer is off or the DVI cable is disconnected. The computer remains responsive, and if music was playing when hibernation started, it properly resumes. I can also use the keyboard (to run sudo reboot now, for example). Switching to another virtual console (Ctrl+Alt+1, Ctrl+Alt+7) does not improve the situation. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: pm-utils 1.4.1-16 ProcVersionSignature: Ubuntu 4.4.0-10.25-generic 4.4.3 Uname: Linux 4.4.0-10-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 Date: Tue Mar 8 14:03:50 2016 InstallationDate: Installed on 2016-03-06 (2 days ago) InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160224) PackageArchitecture: all ProcEnviron: LANGUAGE=fr_FR TERM=xterm PATH=(custom, no user) LANG=fr_FR.UTF-8 SHELL=/bin/bash SourcePackage: pm-utils UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/1554509/+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
