Still observe this from time to time. Importance shouldn't be difficult to decide (critical).
I strongly dubt this is a graphic driver issue, though of course it is possible. It doesn't look like it "hangs the system" but rather like all the UIs stop responding. The cursor still shows and changes shape when you roll over things. If you click on the top of the currently maximised window and drag it as if to unmaximize it, you can even see the cursor take the shape of a hand as it normally does when you drag something - only that it doesn't work.... This is ALWAYS triggered by a mouse click, and I'm almost sure I've always seen this with the foreground window maximised. btw, MAYBE this could have a workaround if it wasn't for bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1016457 (the importance of that bug is wrong) -- 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/1063046 Title: The whole system hanged and stop responding. Had to reboot and lost unsaved data Status in “nvidia-graphics-drivers” package in Ubuntu: Confirmed Bug description: I had a few applications open, namely: - Google Chrome - a Nautilus window - Gedit - a terminal Suddenly, after clicking on Google Chrome to give it focus, the whole system hanged and I couldn't give focus to any other window, nor close, minimize or move the current focused window (which was Chrome), nor do anything. - CPU consumption wasn't high (I can tell because the fan cooler wasn't running fast) - the Google Chrome maximized window, to which I had just given focus, was on front - I could see and move the mouse cursor, but wherever I clicked or dragged, nothing happened at all - Moving the cursor to the top of the screen would NOT show the window's top buttons nor the application menu - moving the cursor to the left would not show up the Launcher - alt+tab wouldn't switch to another window - Ctrl+Super+D would not show the desktop - left or right-clicking anywhere did nothing I couldn't save the files that I was editing in Gedit, so I lost a huge lot of unsaved work. Additionally, because of bug #1016457, I couldn't even open a virtual terminal and try killing some process or anything. The KEYBOARD DID RESPOND, in some way, meaning that for example: - the Ctrl+Alt+M shortcut that I have associated to the touchpad-indicator program did work and would disable and reenable the touchpad - Ctrl+Alt+F1 did show a black screen (which is what usually happen, because of bug 1016457, instead of showing the virtual terminal) However neither Alt+TAB nor Ctrl+Super+D (show Desktop) worked. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: unity 5.16.0-0ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-32.51-generic 3.2.30 Uname: Linux 3.2.0-32-generic i686 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu13 Architecture: i386 CompizPlugins: [core,bailer,detection,composite,opengl,decor,vpswitch,mousepoll,compiztoolbox,snap,place,resize,session,regex,grid,wall,move,gnomecompat,imgpng,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] Date: Sun Oct 7 00:46:06 2012 InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429) ProcEnviron: TERM=xterm PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: unity UpgradeStatus: Upgraded to precise on 2012-05-17 (142 days ago) --- ApportVersion: 2.0.1-0ubuntu14 Architecture: i386 CompizPlugins: [core,composite,opengl,decor,vpswitch,mousepoll,compiztoolbox,snap,commands,place,resize,session,regex,grid,wall,move,gnomecompat,imgpng,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] DistroRelease: Ubuntu 12.04 InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429) NonfreeKernelModules: nvidia Package: unity 5.16.0-0ubuntu1 PackageArchitecture: i386 ProcEnviron: TERM=xterm PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 3.2.0-33.52-generic 3.2.31 Tags: precise running-unity Uname: Linux 3.2.0-33-generic i686 UpgradeStatus: Upgraded to precise on 2012-05-17 (176 days ago) UserGroups: adm admin audio cdrom dialout lpadmin netdev plugdev sambashare vboxusers video To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/1063046/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

