[Bug 72120] Re: Screen brightness not altered when AC adapter is unplugged

[Robert Knight]

Hello, it appears that this is an issue with HAL rather than guidance-
power-manager, one of the scripts which is executed when attempting to
change the screen brilliance via HAL is broken under Edgy because it
relies on Bash features, but Edgy uses dash to execute scripts by
default

https://bugs.launchpad.net/distros/ubuntu/+source/gnome-power-
manager/+bug/65028

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Screen brightness not altered when AC adapter is unplugged
https://launchpad.net/bugs/72120