I also happened sometimes that black screen came and UI freezed; had to reboot by ALT- Print Screen - s u b. Both, xfwm4's compositor enabled and disabled.
-- 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/1409332 Title: Mouse cursor freezes, when using e.g. youtube in chromium, and stays that way Status in xorg package in Ubuntu: Incomplete Bug description: I can not make this happen, if I use Firefox, but it happens, if I use Chromium browser and play youtube video. Visible mouse cursor stops moving. Still I can move mouse and use it, but it is hard, when you don't see where the cursor effectively is. This seems to happen only, if I have hardware acceleration enabled in advanced settings. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: chromium-browser 39.0.2171.65-0ubuntu0.14.04.1.1064 ProcVersionSignature: Ubuntu 3.13.0-43.72-lowlatency 3.13.11.11 Uname: Linux 3.13.0-43-lowlatency x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 CurrentDesktop: XFCE Date: Sat Jan 10 22:23:29 2015 EcryptfsInUse: Yes InstallationDate: Installed on 2014-09-21 (111 days ago) InstallationMedia: Ubuntu-Studio 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.1) SourcePackage: chromium-browser UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.default.chromium.browser: [deleted] mtime.conffile..etc.chromium.browser.default: 2014-09-28T10:04:54.426898 --- ApportVersion: 2.14.1-0ubuntu3.7 Architecture: amd64 CurrentDesktop: XFCE CurrentDmesg: [ 373.553548] perf samples too long (2509 > 2500), lowering kernel.perf_event_max_sample_rate to 50000 DRM.card0.VGA.1: edid-base64: AP///////wAebW9DLDQEABEPAQNuIht46i7lpFdKnCURUFSla4AxT0VPYU+BgAEBAQEBAQEBMCoAmFEAKkAwcBMAUg4RAAAeAAAA/QA4Sx5TDgAKICAgICAgAAAA/ABMMTcxNVMKICAgICAgAAAA/AAKICAgICAgICAgICAgAJg= dpms: On modes: 1280x1024 1280x1024 1152x864 1024x768 1024x768 1024x768 832x624 800x600 800x600 640x480 640x480 720x400 enabled: enabled status: connected Desktop-Session: 'ubuntustudio' '/etc/xdg/xdg-ubuntustudio:/usr/share/upstart/xdg:/etc/xdg:/etc/xdg' '/usr/share/ubuntustudio:/usr/share/xfce4:/usr/local/share/:/usr/share/:/usr/share' DetectedPlugins: DistroRelease: Ubuntu 14.04 EcryptfsInUse: Yes Env: 'None' 'None' InstallationDate: Installed on 2014-09-21 (180 days ago) InstallationMedia: Ubuntu-Studio 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.1) Load-Avg-1min: 0.61 Load-Processes-Running-Percent: 0.2% MachineType: Dell Inc. OptiPlex 745 Package: xorg PackageArchitecture: amd64 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-46-lowlatency root=UUID=d012c1bd-7e56-4035-b321-38d20cb14421 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.13.0-46.79-lowlatency 3.13.11-ckt15 Tags: trusty Uname: Linux 3.13.0-46-lowlatency x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm audio cdrom dip lp lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 06/26/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: 2.6.6 dmi.board.name: 0RF703 dmi.board.vendor: Dell Inc. dmi.chassis.type: 6 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr2.6.6:bd06/26/2011:svnDellInc.:pnOptiPlex745:pvr:rvnDellInc.:rn0RF703:rvr:cvnDellInc.:ct6:cvr: dmi.product.name: OptiPlex 745 dmi.sys.vendor: Dell Inc. modified.conffile..etc.default.chromium.browser: [deleted] mtime.conffile..etc.chromium.browser.default: 2014-09-28T10:04:54.426899 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1409332/+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