Ubuntu 11.04 Laptop Freeze & Mouse Issues

I'm running Ubuntu 11.04 (Natty Narwahl) on a Toshiba Portege laptop and a few problems when the laptop is running on the battery.

The system freezes / locks up and the Toshiba fan goes into high speed mode

The mouse doesn't work (although the trackpad does)

The screen eventually shifts to the lowest brightness and the brightness cannot be increased

Executing the dpkg -s laptop-mode-tools command shows that I'm running version 1.57-1 . For the time being, I'd rather sacrifice the battery saving features provided by the laptop-mode and disable it entirely. To do this, I edited the /etc/laptop-mode/laptop-mode.conf file to disable the tools.

ENABLE_LAPTOP_MODE_TOOLS=0

The change should take effect immediately.

Updated: June 23, 2011

In the month since I made the change described above I continue to have the system freezes although they don't seem as frequent and I also have periodic issues with the mouse that are resolved by using the touchpad.

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