Decided there is no point adding any logs from a live-usb session confusing the situation not knowing that they will reveal anything. Going to put the state of this defect back to Status New since no resolution has been found yet and await further guidance on what info I can provide to help debug it.
** Changed in: xorg (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1437719 Title: [Dell Inspiron 5547] Black Screen on user switch Status in xorg package in Ubuntu: New Bug description: When switching users (primarly using Ctrl-Alt-F(7-10) the monitor will sometimes go black. This happens once or twice a day, although on occasion it doesn't occur for several days. It has occurred at least once a week since I installed Ubuntu 14.04.1. It seems to be more of a problem since moving to 14.04.2 - I did perform installation of the Utopic Kernel, X, and MesaGL packages, but this is only perception. At the same time I switched from Unity to Cinnamon (Jeremy Clarkson isn't the only dinosaur roaming the world) - but I have confirmed that just running Unity desktops is vunerable. The display can be restored by sudo service lightdm restart - run from an ssh login from another system. Steps to consistently reproduce the problem is simply to perform abusive user stress testing: switching from one user to another rapidly: as soon as the display switches go back to the other. Usually I can get a black screen with this method in under a minute with Unity desktops. I have the same issue with another system (Dell Vostro 3550) reported in Bug #1437557 - submitting a new defect since this is different hardware and even though the defects look the same there might be differences underneath the hood causing the problem. 14.04.2 Trusty 3.16.0-33-generic. I'll edit this report shortly with additional system info. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: xorg 1:7.7+1ubuntu8.1 ProcVersionSignature: Ubuntu 3.16.0-33.44~14.04.1-generic 3.16.7-ckt7 Uname: Linux 3.16.0-33-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.14.1-0ubuntu3.8 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Sat Mar 28 14:45:26 2015 DistUpgraded: Fresh install DistroCodename: trusty DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:063e] InstallationDate: Installed on 2014-12-23 (95 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: Dell Inc. Inspiron 5547 ProcEnviron: LANGUAGE=en_US PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-33-generic root=UUID=6eb0eadb-81ed-43ee-aab3-e3fe6b37ca75 ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/12/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A05 dmi.board.name: 0598GM dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A05 dmi.modalias: dmi:bvnDellInc.:bvrA05:bd08/12/2014:svnDellInc.:pnInspiron5547:pvrA05:rvnDellInc.:rn0598GM:rvrA00:cvnDellInc.:ct8:cvrA05: dmi.product.name: Inspiron 5547 dmi.product.version: A05 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.11.3+14.04.20150122-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.56-1~ubuntu2 version.libgl1-mesa-dri: libgl1-mesa-dri N/A version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A xserver.bootTime: Fri Mar 27 15:14:18 2015 xserver.configfile: default xserver.errors: SynPS/2 Synaptics TouchPad: Read error 19 SynPS/2 Synaptics TouchPad: Read error 19 xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 1110 vendor LGD xserver.version: 2:1.16.0-1ubuntu1.2~trusty2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1437719/+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