When switching between different application windows there is a chance that the contents of a window just freeze. For me this happens with Firefox quite often, and extremely often when using QtCreator. Once such a window is frozen, scrolling or keyboard input seems to work, but you won't see any effect because the window contents are not updated anymore.
You can "re-animate" such a frozen window again by just resizing it a bit, but it will get stuck again some time later after switching between windows.
This bug doesn't happen with openbox or gnome as window manager / compositor.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: unity 7.3.2+15.04.20150420-0ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-22.22-generic 3.19.8-ckt1
Uname: Linux 3.19.0-22-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
NVRM version: NVIDIA UNIX x86_64 Kernel Module 340.76 Thu Jan 22 12:11:08 PST 2015
GCC version: gcc version 4.9.2 (Ubuntu 4.9.2-10ubuntu13)
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CurrentDesktop: Unity
Date: Wed Jul 8 15:23:19 2015
DistUpgraded: Fresh install
DistroCodename: vivid
DistroVariant: ubuntu
GraphicsCard:
NVIDIA Corporation GT218 [GeForce 210] [10de:0a65] (rev a2) (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Device [1043:8343]
InstallationDate: Installed on 2014-03-19 (475 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140319)
MachineType: Tarox Prof. Workstation P7Q
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-22-generic root=UUID=403365c1-32ea-4fc9-b389-6a61e48dec7c ro quiet splash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/02/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0080
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P7Q57-M DO
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev x.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0080:bd08/02/2011:svnTarox:pnProf.WorkstationP7Q:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP7Q57-MDO:rvrRevx.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: Prof. Workstation P7Q
dmi.product.version: System Version
dmi.sys.vendor: Tarox
version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
xserver.bootTime: Wed Jul 8 12:50:05 2015
xserver.configfile: default
xserver.devices:
input Power Button KEYBOARD, id 6
input Power Button KEYBOARD, id 7
input Logitech USB-PS/2 Optical Mouse MOUSE, id 8
input LITEON Technology USB Multimedia Keyboard KEYBOARD, id 9
xserver.errors: open /dev/fb0: No such file or directory
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
xserver.version: 2:1.17.1-0ubuntu3
Hallo
ca you please make an example step by step on how i can reproduce the bug on standard environement.
I cannot reproduce on Wily.
Best regards