Comment 9 for bug 30659

> (Actually, I think dimming the screen would be fine, but not turning it off or locking it.)

Note that, with the current GPM, the screen does dim between when the session is idle and when the screen is blanked. Of course, this doesn't happen if the screensaver is inhibited because the session never becomes "idle". That means that, because voice-only calls inhibit the screensaver, the screen will not dim. Currently, the inhibit options are limited to display and computer sleep, AFAIK.