Something similar happened to me in Ubuntu 12.10. I accidentally pressed Super, getting the dashboard, then pressed it again to close it. After this, keyboard and mouse stopped working. All of the apps continued to run just fine - but I couldn't interact with them.
Xorg.log had this line at the end: [ 17877.120] [mi] Increasing EQ size to 512 to prevent dropped events. When I killed compiz, everything started working again. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/755099 Title: X lockup caused by compiz/unity Status in Unity: Incomplete Status in “nvidia-graphics-drivers” package in Ubuntu: Confirmed Status in “unity” package in Ubuntu: Incomplete Bug description: Binary package hint: unity I had mplayer running fine, I hit f to make it fullscreen, the whole desktop froze. No fullscreen mplayer, mplayer sound started to loop, no X events possible (mouse and keyboard). I sshed in from another box, top showed Xorg at 100%. X logs showed: [161337.628] (WW) NVIDIA(0): WAIT (0, 6, 0x8000, 0x00007ff4, 0x00007ff4) [161340.650] (WW) NVIDIA(0): WAIT (2, 6, 0x8000, 0x00008718, 0x00008964) [161342.204] [mi] EQ overflowing. The server is probably stuck in an infinite loop. [161342.204] Backtrace: [161342.303] 0: /usr/bin/X (xorg_backtrace+0x3b) [0x80eaa9b] [161342.303] 1: /usr/bin/X (mieqEnqueue+0x1ab) [0x80e9c7b] [161342.303] 2: /usr/bin/X (xf86PostMotionEventM+0xbf) [0x80c4b2f] [161342.303] 3: /usr/lib/xorg/modules/input/evdev_drv.so (0xf18000+0x368f) [0xf1b68f] [161342.303] 4: /usr/lib/xorg/modules/input/evdev_drv.so (0xf18000+0x5099) [0xf1d099] [161342.303] 5: /usr/lib/xorg/modules/input/evdev_drv.so (0xf18000+0x5d0d) [0xf1dd0d] [161342.303] 6: /usr/bin/X (0x8048000+0x6b3bf) [0x80b33bf] [161342.303] 7: /usr/bin/X (0x8048000+0x12dd16) [0x8175d16] [161342.303] 8: (vdso) (__kernel_sigreturn+0x0) [0xac4400] [161347.650] (WW) NVIDIA(0): WAIT (1, 6, 0x8000, 0x00008718, 0x00008964) [161350.660] (WW) NVIDIA(0): WAIT (2, 6, 0x8000, 0x00008718, 0x00003274) [161357.660] (WW) NVIDIA(0): WAIT (1, 6, 0x8000, 0x00008718, 0x00003274) [161360.661] (WW) NVIDIA(0): WAIT (2, 6, 0x8000, 0x00008718, 0x00004b80) [161367.661] (WW) NVIDIA(0): WAIT (1, 6, 0x8000, 0x00008718, 0x00004b80) [161370.662] (WW) NVIDIA(0): WAIT (2, 6, 0x8000, 0x00008718, 0x00004ed0) ..showing "something" was stuck in a loop doing X calls. My most likely candidates were mplayer (using vdpau), compiz and chromium (now that it uses the GPU). I started by killing mplayer: no change. X was still frozen and taking all the CPU. The display wasn't even refreshed, still showing mplayer while it was gone. I next killed compiz, it re-spun and went to 100%, letting X at ~ 40%. Desktop was still unusable. Closing the other apps (chromium, evolution, xterms,..) didn't help. X even went back to 100%. I re-killed compiz, and finally, everything went back to normal. So it seems compiz is to blame. It already happened to me twice this week. It never happened before so it may be caused by something in the recent uploads (compiz, unity, ...) ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: unity 3.8.4-0ubuntu1 ProcVersionSignature: Ubuntu 2.6.38-8.41-generic 2.6.38.2 Uname: Linux 2.6.38-8-generic i686 NonfreeKernelModules: nvidia .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0' .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86 Kernel Module 270.30 Fri Feb 25 14:34:41 PST 2011 GCC version: gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu1) Architecture: i386 CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,gnomecompat,commands,vpswitch,resize,snap,mousepoll,regex,move,place,imgpng,session,animation,wall,workarounds,expo,ezoom,staticswitcher,fade,scale,unityshell] CompositorRunning: compiz Date: Sat Apr 9 00:24:29 2011 DistUpgraded: Fresh install DistroCodename: natty DistroVariant: ubuntu DkmsStatus: nvidia-current, 270.30, 2.6.38-6-generic, i686: installed nvidia-current, 270.30, 2.6.38-8-generic, i686: installed nvidia-current, 270.30, 2.6.38-7-generic, i686: installed GraphicsCard: nVidia Corporation G94 [GeForce 9600 GT] [10de:0622] (rev a1) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device [1043:827c] InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100331) InstallationMedia_: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100331) InstallationMedia__: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100331) InstallationMedia___: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100331) JockeyStatus: xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use) ProcEnviron: LANGUAGE=en_US:en PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/usr/bin/tcsh ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=03e1779a-d90a-4b59-8b03-2d1198aeb7cc ro quiet splash vt.handoff=7 ProcVersionSignature_: Ubuntu 2.6.38-8.41-generic 2.6.38.2 ProcVersionSignature__: Ubuntu 2.6.38-8.41-generic 2.6.38.2 ProcVersionSignature___: Ubuntu 2.6.38-8.41-generic 2.6.38.2 Renderer: Unknown SourcePackage: unity UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/04/2006 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F2 dmi.board.name: 945PL-S3 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.type: 3 dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd08/04/2006:svn:pn:pvr:rvnGigabyteTechnologyCo.,Ltd.:rn945PL-S3:rvrx.x:cvn:ct3:cvr: version.compiz: compiz 1:0.9.4+bzr20110407-0ubuntu2 version.libdrm2: libdrm2 2.4.23-1ubuntu6 version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.1-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3 version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu6 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu6 To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/755099/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp