I attached a screenshot to show one other odd detail that may or may not be related. In the upper left corner, you can see a yellow star. That is from the VoIP app Twinkle, it is a Qt app. It is supposed to be in the menu bar. It was originally in there when I first installed it about month ago, then it started showing in the upper left corner, just below the menu bar. Occasionally it returns to the menu bar when I log in again. My vague recollection is that the problem does not happen when the star is in the menu bar, but that could be wrong.
Also, I'm currently posting while the problem is happening. I can click on the various text fields of this window, but I cannot click on anything else or switch to different windows. I also cannot scroll this window with the mouse wheel. I also cannot click on the window click/minimize/maximize buttons, but I can click the Post Comment button. ** Attachment added: "Screenshot at 2012-03-13 10:44:27.png" https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/925743/+attachment/2863132/+files/Screenshot%20at%202012-03-13%2010%3A44%3A27.png -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/925743 Title: windows stop intermittently responding to mouse control Status in “lightdm” package in Ubuntu: Incomplete Bug description: I inquired about this on #ubuntu, so I'll just copy the log here: (04:02:57 PM) _hc: hey all, I'm a long time Debian (since '98) and Ubuntu (since '06) user and I'm having a maddening issue with my Oneiric setup. Basically, every 30-300 minutes, something freaks out and I cannot move or select windows with my mouse, I can sometimes alt-tab between windows when this happens but not always. Sometimes it goes away, mostly I have to reboot to fix it. This happens in GNOME Classic/gnome-wm, GNOME Classic/compiz, Unity 2D, and GNOME sessions. I can't figure it out, its driving me crazy (04:06:22 PM) rigved: _hc: i think that there nothing common between all those sessions, other than X itself. (04:06:32 PM) _hc: rigved: compiz? (04:06:54 PM) _hc: rigved: no, I guess not, since I used gnome-wm... that's why its driving me so crazy (04:08:27 PM) rigved: _hc: you mean that you are using gdm and not lightdm? (04:08:49 PM) _hc: rigved: I'm using lightdm (04:08:49 PM) rigved: _hc: i thought that Unity 2D does not use compiz... (04:09:17 PM) _hc: rigved: right, nevermind, in my original GNOME Classic session, I was using gnome-wm with no compiz (04:09:56 PM) _hc: rigved: then I changed it to use compiz, and the bug is still there, but a little different: basically I can't alt-tab thru the windows after it freaks out with GNOME-Classic/compiz (04:10:37 PM) rigved: _hc: when you say freak out, you mean that mouse is disabled, right? (04:10:47 PM) _hc: nope mouse works fine (04:10:59 PM) _hc: its just clicking on things mostly doesn't work (04:11:53 PM) _hc: rigved: everything continues to run and work fine, I just can't use the mouse to move windows, select windows, or click things in windows that do not have focus (04:12:28 PM) rigved: _hc: ok. (04:12:29 PM) _hc: often, if a window has focus after the freakout, I can still close it with the mouse (04:13:12 PM) rigved: _hc: and is this machine a laptop? (04:13:23 PM) rigved: _hc: ok. (04:13:26 PM) _hc: yes, Macbook Pro 3rd gen (04:13:42 PM) _hc: I was running maverick on it very nicely, then upgraded to natty then oneiric in a day (04:13:45 PM) _hc: then this started happening (04:15:10 PM) rigved: _hc: this looks like a bug. maybe it has got something to do with the upgrade. maverick to oneiric is a gnome 2 to gnome 3 upgrade. (04:15:42 PM) _hc: rigved: yeah, seems likely. I didn't have natty on long enough to know if this happened there (04:16:51 PM) rigved: _hc: i think you should file a bug report against lightdm, cause that seems common to all. (04:17:29 PM) _hc: rigved: Ok, will do (04:17:38 PM) _hc: rigved: any troubleshotting ideas? (04:18:21 PM) rigved: _hc: i can only think of looking through the logs to find any culprit application (04:18:59 PM) _hc: rigved: I've tried running without certain applications, at this point it would have to be gnome-terminal or firefox, since those are the only two that I really always run hans@palatschinken ~ $ lsb_release -rd Description: Ubuntu 11.10 Release: 11.10 hans@palatschinken ~ $ apt-cache policy lightdm lightdm: Installed: 1.0.6-0ubuntu1.2 Candidate: 1.0.6-0ubuntu1.2 Version table: *** 1.0.6-0ubuntu1.2 0 500 http://mirror.anl.gov/pub/ubuntu/ oneiric-updates/main i386 Packages 100 /var/lib/dpkg/status 1.0.6-0ubuntu1.1 0 500 http://security.ubuntu.com/ubuntu/ oneiric-security/main i386 Packages 1.0.1-0ubuntu6 0 500 http://mirror.anl.gov/pub/ubuntu/ oneiric/main i386 Packages ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: lightdm 1.0.6-0ubuntu1.2 ProcVersionSignature: Ubuntu 3.0.0-15.26-generic-pae 3.0.13 Uname: Linux 3.0.0-15-generic-pae i686 ApportVersion: 1.23-0ubuntu4 Architecture: i386 Date: Thu Feb 2 16:24:56 2012 ProcEnviron: SHELL=/bin/bash PATH=(custom, no user) LANG=en_US.UTF-8 SourcePackage: lightdm UpgradeStatus: Upgraded to oneiric on 2011-10-19 (105 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/925743/+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

