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[David Beswick <876522@xxxxxxxxxxxxxxxxxx>]

Hi, I'm running 11.10 on the same Macbook model and also have this
problem. When I resume from suspend, the screen is completely dimmed. I
often can't see the login screen. The laptop screen also dims when I
press Fn-F7 to change the multi-monitor mode. In both of these
situations, I can bring the brightness back up with Fn-F2. But every
time I resume or change monitor modes, it has to be done again. I found
the problem resolved for the multi-monitor switch when I chose "Turn off
after: Never" in the Screen options. However, the problem returned after
another suspend and resume cycle.

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-power-manager in Ubuntu.
https://bugs.launchpad.net/bugs/876522

Title:
  black screen when dim scrren to save power

Status in “gnome-power-manager” package in Ubuntu:
  Confirmed

Bug description:
  My macbook 2,1 goes to energy saving mode and dims the screen. But when I touch any key, the screen remains black
  As workaround, I type my password to unblock with black screen, I don't see what I'm typing, and then I press the brithness up key and then I recover the normal mode.

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