Public bug reported: This problem was evident in 12.04, 12.10 and 13.04 (all using GNOME).
When watching video (online with Firefox or local using videos 3.6.3 or VLC 2.0.6), the video will stop and the soundtrack stutters (seems to be in a short loop). This fault goes away if the mouse pointer is constantly moving. At the same time that the video is stopped, the clock in the Indicator Applet also stops. Still happens when using SNA. ~$ lsb_release -rd Description: Ubuntu 13.04 Release: 13.04 ~$ uname -r 3.8.0-19-generic ~$ lspci -nn |grep VGA | sed 's/.*Intel Corporation //' Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03) ~$ grep "SNA init" /var/log/Xorg.0.log [ 28.740] (II) intel(0): SNA initialized with gen3 backend ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: xorg 1:7.7+1ubuntu4 ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8 Uname: Linux 3.8.0-19-generic i686 .tmp.unity.support.test.0: ApportVersion: 2.9.2-0ubuntu8 Architecture: i386 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Sat Apr 27 11:09:14 2013 DistUpgraded: Fresh install DistroCodename: raring DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03) (prog-if 00 [VGA controller]) Subsystem: Acer Incorporated [ALI] Device [1025:0090] Subsystem: Acer Incorporated [ALI] Device [1025:0090] InstallationDate: Installed on 2013-04-26 (0 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release i386 (20130424) MachineType: Acer TravelMate 4200 MarkForUpload: True PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-19-generic root=UUID=c9294912-a9ed-411e-b971-1873c7687087 ro crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) XorgConf: Section "Device" Identifier "Card0" Driver "intel" Option "AccelMethod" "sna" EndSection dmi.bios.date: 12/15/2006 dmi.bios.vendor: Acer dmi.bios.version: V3.24 dmi.board.name: Grapevine dmi.board.vendor: Acer dmi.board.version: N/A dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: N/A dmi.modalias: dmi:bvnAcer:bvrV3.24:bd12/15/2006:svnAcer:pnTravelMate4200:pvrV3.24:rvnAcer:rnGrapevine:rvrN/A:cvnAcer:ct10:cvrN/A: dmi.product.name: TravelMate 4200 dmi.product.version: V3.24 dmi.sys.vendor: Acer version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1 version.libdrm2: libdrm2 2.4.43-0ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.1-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.1-0ubuntu3 version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1 xserver.bootTime: Sat Apr 27 11:02:26 2013 xserver.configfile: /etc/X11/xorg.conf xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.13.3-0ubuntu6 xserver.video_driver: intel ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 raring ubuntu ** Attachment added: "video of fault occuring..." https://bugs.launchpad.net/bugs/1173556/+attachment/3656031/+files/error.mov -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1173556 Title: problems playing videos unless mouse pointer is constantly moved... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1173556/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs