Comment 26 for bug 760769

Lately, I've been having the same issue. My desktop mouse cursor was responsive, but the clicks were registering or being detected.

I was able to ssh into this machine when it happened. Doing a top, I noticed that the load was > 12 ! (Typical load is usually < 2).

Also, there were some ibus related processes hogging up gigabytes of memory. Bizarre and a little unnerving. I killed a couple of these ibus related memory hogs, my system came back to normal.

So, I think the mouse clicks not being detected was a side effect of the system being under such a heavy load that it couldn't respond in a timely fashion to mouse clicks.

Also, as a side note, I changed my Google Chrome configuration to disallow running in the background. It also seemed to be using up a solid gigabyte+ of memory.

I'm going to try to remove ibus and see if the crazy load issue (I wasn't really actively doing anything to stress the system at the time) goes away..