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


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

closed as off topic by Jorge Castro, Takkat, jrg, Marco Ceppi Feb 3 '12 at 0:19

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  • Use another Kernel? – Uri Herrera Dec 11 '11 at 2:43
  • This isn't the root cause, was already occurring .. – david6 Dec 11 '11 at 2:51
  • 1
    This question should instead be filed as a bug report, thanks! Instructions here. – Jorge Castro Feb 1 '12 at 17:31
  • This question should instead be filed as a bug report, and as such is off-topic, thanks! Instructions here. – jrg Feb 3 '12 at 0:01

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.

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