screen fades to black on common actions

[xkcd]

I've just installed Ubuntu 7.10 on a Fujitsu Lifebook P1610. The screen backlight fades to black (over about a second) when I:

Plug in the A/C power
Unplug the A/C power
Open the "Power Management" preferences dialog
Touch the "Set Display Brightness" slider in any way (without necessarily adjusting it, just clicking) in either the A/C power tab or the battery power tab
Randomly (sometimes when I'm idle, sometimes while I'm using the mouse).
When I close and reopen the laptop's lid (the relevant checkbox is marked "do nothing")

Each time it does this, I have to tap the "brightness up" button 20 times, which is a bit tedious.

I have all the sliders set to "do not ever dim the display" and have tried setting the two dimming sliders to both 100% and 0% -- neither seems to alter this behavior.

It only happens when I'm using Gnome. It does not happen in Ion3. Note: when doing the random dimming, the "power history" shows that it entered "session powersave".

[xkcd (xkcd)]

Clarification: the fade happens when I do *any* of the items on the list (Plug in the A/C power, Unplug the A/C power, etc) -- it's not a procedure.

[Daniel T Chen (crimsun)]

Is this symptom still reproducible in 8.10?

[Michael Nagel (nailor)]

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks again!