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My problem is a bit like the issue given here: Mouse selects everything on its own except it occurs in both Gnome 3 and Unity. It doesn't happen in all applications though. So far I've observed it primarily in MATLAB (R2012a), Nautilus, Chromium and the Gnome and/or Unity dialog boxes. Essentially I'll go to click something (like to go to a certain location in the MATLAB editor, or to click a button on a system dialog box) and instead of clicking where I pointed, the click is performed somewhere else, perhaps opening another menu or even selecting a large chunk of text in an arbitrary part of the screen. Furthermore, Nautilus recognizes left and right clicks but never at the location I actually clicked. However, dragging works.

It happens whether I am using the touchscreen (HP TX2) or a wireless mouse, or the touchpad. I am on Ubuntu 12.04, and I have also uninstalled Compiz to no effect. If I reboot the problem sometimes disappears, but it either comes back after a few minutes or if I suspend and resume.

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closed as off topic by jrg Nov 3 '12 at 1:37

Questions on Ask Ubuntu are expected to relate to Ubuntu within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

    
Did you ever solve this? I am getting the same problem, but so far only in some parts of MATLAB R2011b. –  Bill Cheatham Jul 23 '12 at 16:14
    
Same problem here. I have 64bit matlab 7.11.0 (2010b) under ubuntu gnome-shell 3.4.1 –  Sanjay Manohar Oct 18 '12 at 18:38
    
This question should instead be filed as a bug report, and as such is off-topic, thanks! Instructions on filing a bug report are here. –  jrg Nov 3 '12 at 1:37
    
I had the same problem and it only appeared when the window was maximised. The mouse cursor was exactly offset by the offset that the orginal un-maximised window had from the upper left corner of the screen. I can thus work around that bug by first moving the unmaximised window to the upper left corner and then clicking maximise. –  Elmar Zander Jun 26 at 13:28

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