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I have a midrange PC (Intel Core2-Duo 3GHz, 4GB RAM, 1.5TB storage), with latest Ubuntu 11.10 (Oneiric) and Unity (3D).

Description: PC does NOT always return control after automatic timeout to screen-saver -- does NOT prompt for password, keyboard and mouse are still active but NON-functional, and is non-recoverable (requires power-off).

This appears to be a race condition between mouse and keyboard. When I absently move mouse (to exit screensaver) and then quickly enter password (unprompted), this lockup condition occurs ..

Is this a known issue? Can it be resolved?

A similar mouse/keyboard zombie-state is described in: (but for Ubuntu 11.04)

Freeze when resuming from screensaver or monitor-sleep-state

UPDATE

Since update to kernel 3.0.0-14 (today) this has happened 3 times.

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david6
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  • Use another Kernel? – Uri Herrera Dec 11 '11 at 02:43
  • This isn't the root cause, was already occurring .. – david6 Dec 11 '11 at 02:51
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    This question should instead be filed as a bug report, thanks! [Instructions here](http://askubuntu.com/questions/5121/how-do-i-report-a-bug). – Jorge Castro Feb 01 '12 at 17:31
  • This question should instead be filed as a bug report, and [as such](http://meta.askubuntu.com/questions/1317/what-to-do-with-questions-that-describe-known-bugs/) is off-topic, thanks! [Instructions here](http://askubuntu.com/questions/5121/how-do-i-report-a-bug). – jrg Feb 03 '12 at 00:01

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This has happened to one of my friends. We installed GNOME 3 and it stopped. I'm not sure this was the answer you are looking for but nonetheless, it is a solution.