I can confirm that this behaviour is also present on my Acer Aspire 5633 WLMi Laptop. I can also confirm that unchecking "Reduce backlight brightness" and "Dim display when idle" under the battery tab in the Power Management Preferences causes the power system to behave normally.
I can confirm that this behaviour is also present on my Acer Aspire 5633 WLMi Laptop. I can also confirm that unchecking "Reduce backlight brightness" and "Dim display when idle" under the battery tab in the Power Management Preferences causes the power system to behave normally.