Public bug reported: I have a Lenovo G570 laptop (Intel Sandy Bridge graphics). If I suspend via the user interface, then resume by pressing the power button, everything works. However, when closing the lid to suspend, I observe the following sequence:
1. Close lid, wait a few seconds for suspend. 2. Open lid. Laptop starts up, light-locker screen is visible. 3. Type password into light-locker, hit enter. 4. Screen goes blank. It is totally black i.e. it seems that the backlight is off. Moving the mouse, pressing keys or trying to change the brightness with the keyboard shortcut does not bring back the display. I can get a console by C-A-F1 and then restart lightdm to get a working display again. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: xorg 1:7.7+1ubuntu8 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu2 Architecture: amd64 CurrentDesktop: XFCE Date: Sun Apr 13 13:14:37 2014 InstallationDate: Installed on 2014-03-10 (34 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140225) SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug trusty xfce -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1307114 Title: Blank screen after resume if lid closed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1307114/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs