For me killing unity-panel-service as a last resort doesn't work (anymore). I am sometimes, but not always, lucky by preforming these voodoo steps: 1) switch to a VT (text terminal, e.g. CTRL-ALT-F1), log in and type "startx". 2) It starts another X session, and asks for a password ("authentication is required to change your own userdata"). Just press ESC a few times, and you end up with an empty, unusable desktop. You can't do much here. 3) Now switch back to the VT (again CTRL-ALT-F1) and press CTRL-C, which kills the new X session. 4) press CTRL-ALT-F7 to switch back to the original (black-screen) X session, which hopefully snapped out of blackness by the above steps.
This bug is causing data loss much of the time, as it prevents accessing all your open apps and documents after suspending/resuming. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1418295 Title: Black screen after resuming from suspend Status in X.org xf86-video-intel: New Status in xserver-xorg-video-intel package in Ubuntu: Incomplete Bug description: Using Ubuntu 14.10 on a Lenovo Yoga 2, when I resume the laptop from suspend I frequently (around 50% of the time) get a blank black screen with a mouse cursor on it, and am unable to login or interact with the desktop at all. Often (also about 50% of the time) switching over to a text terminal and killing "unity-panel-service --lockscreen-mode" causes it to snap out of it and prompt me with the unlock dialog when I switch back to X. Using xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4.1 ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4.1 ProcVersionSignature: Ubuntu 3.16.0-30.40-generic 3.16.7-ckt3 Uname: Linux 3.16.0-30-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.14.7-0ubuntu8.1 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Wed Feb 4 20:42:38 2015 DistUpgraded: 2014-11-15 17:52:46,161 DEBUG enabling apt cron job DistroCodename: utopic DistroVariant: ubuntu DkmsStatus: virtualbox, 4.3.18, 3.16.0-30-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:3978] InstallationDate: Installed on 2014-06-28 (221 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: LENOVO 20266 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-30-generic.efi.signed root=UUID=d1c3a7eb-265e-441f-9aac-eb15636dfe61 ro quiet splash vt.handoff=7 SourcePackage: xserver-xorg-video-intel UpgradeStatus: Upgraded to utopic on 2014-11-15 (81 days ago) dmi.bios.date: 06/27/2014 dmi.bios.vendor: LENOVO dmi.bios.version: 76CN38WW dmi.board.asset.tag: No Asset Tag dmi.board.name: Yoga2 dmi.board.vendor: LENOVO dmi.board.version: 31900058STD dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Yoga 2 Pro dmi.modalias: dmi:bvnLENOVO:bvr76CN38WW:bd06/27/2014:svnLENOVO:pn20266:pvrLenovoYoga2Pro:rvnLENOVO:rnYoga2:rvr31900058STD:cvnLENOVO:ct10:cvrLenovoYoga2Pro: dmi.product.name: 20266 dmi.product.version: Lenovo Yoga 2 Pro dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.56-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.2-0ubuntu0.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.2-0ubuntu0.1 version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1.2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2 xserver.bootTime: Mon Feb 2 11:10:08 2015 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.16.0-1ubuntu1.2 xserver.video_driver: intel To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1418295/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp