I added a bug report of my own a while ago, I didn't think with some of the explanations here that my issue was the exact same bug, but its hard to tell with so many people reporting.
Anyway if it is related, concerning USB this is what I found.
My laptop keyboard is on the USB bus, and has the problem. However if I plug in an external USB keyboard it works fine.
I've found that depressing 2 keys at the same time doesn't report both most of the time, and will often result in a runaway 'stuck' key. Also if I run xev and do the same xev reports a continuous keypress event with no release when the 'stuck' keys happen.
I added a bug report of my own a while ago, I didn't think with some of the explanations here that my issue was the exact same bug, but its hard to tell with so many people reporting.
https:/ /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-input- evdev/+ bug/371066
Anyway if it is related, concerning USB this is what I found.
My laptop keyboard is on the USB bus, and has the problem. However if I plug in an external USB keyboard it works fine.
I've found that depressing 2 keys at the same time doesn't report both most of the time, and will often result in a runaway 'stuck' key. Also if I run xev and do the same xev reports a continuous keypress event with no release when the 'stuck' keys happen.