Public bug reported: The problem started happening immediately after I upgraded to kubuntu 14.04. (from 13.10) ck the monitor is connected to my laptop (DELL XPS 13) via a VGA mini display port.
At boot, it works correctly, but if the screen goes to sleep after some inactivity, then it stays black forever. (whereas my laptop screen still works), and some error is reported in dmesg. Notice that I'm talking about screen blacking out after inactivity, *not* a full system suspend: the laptop stays awake. The bug is similar to https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1314213 If I unplug the VGA adapter, and plug it back, it works again. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: xorg 1:7.7+1ubuntu8 ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] CompositorRunning: kwin CurrentDesktop: KDE Date: Fri May 23 16:02:09 2014 DistUpgraded: 2014-05-09 13:04:30,209 DEBUG enabling apt cron job DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-sputnik-20120802-0 DistroCodename: trusty DistroVariant: kubuntu DkmsStatus: fwts-efi-runtime-dkms, 14.03.01, 3.11.0-20-generic, x86_64: installed fwts-efi-runtime-dkms, 14.03.01, 3.13.0-24-generic, x86_64: installed vboxhost, 4.3.6, 3.11.0-20-generic, x86_64: installed vboxhost, 4.3.6, 3.13.0-24-generic, x86_64: installed GraphicsCard: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:052e] InstallationDate: Installed on 2012-11-13 (555 days ago) InstallationMedia: Ubuntu 12.04 "Precise" - Failed to find casper uuid.conf in 'binary/casper/initrd.img' LIVE/INSTALL Binary 20120802-21:13 LightdmGreeterLog: QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: Aucun fichier ou dossier de ce type QFileSystemWatcher: failed to add paths: /var/lib/lightdm/.config/ibus/bus Bus::open: Can not get ibus-daemon's address. IBusInputContext::createInputContext: no connection to ibus-daemon LightdmGreeterLogOld: QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: Aucun fichier ou dossier de ce type QFileSystemWatcher: failed to add paths: /var/lib/lightdm/.config/ibus/bus Bus::open: Can not get ibus-daemon's address. IBusInputContext::createInputContext: no connection to ibus-daemon MachineType: Dell Inc. Dell System XPS L321X ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=f18a56b7-1429-4ce3-b6e3-65edacff16a3 ro quiet splash crashkernel=384M-:128M vt.handoff=7 SourcePackage: xorg UpgradeStatus: Upgraded to trusty on 2014-05-09 (14 days ago) dmi.bios.date: 07/02/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A06 dmi.board.name: 085X6F dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnDellInc.:bvrA06:bd07/02/2012:svnDellInc.:pnDellSystemXPSL321X:pvr:rvnDellInc.:rn085X6F:rvrA00:cvnDellInc.:ct8:cvr0.1: dmi.product.name: Dell System XPS L321X dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.11+14.04.20140423-0ubuntu1 version.ia32-libs: ia32-libs 20090808ubuntu36 version.libdrm2: libdrm2 2.4.52-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu5 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu5 version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2 xserver.bootTime: Fri May 23 06:57:33 2014 xserver.configfile: None xserver.errors: Failed to load module "displaylink" (module does not exist, 0) xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 4920 vendor CMN xserver.version: 2:1.15.1-0ubuntu2 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug kubuntu trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1322644 Title: external monitor does not wake up after sleep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1322644/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
