Hi Sam, Is it possible that this is a power saving feature in the bios of your laptop that never worked before because your F7 configuration had power saving features disabled? Nataraj On Sun, 2007-11-11 at 13:13 -0500, Sam Varshavchik wrote: > I thought that I was going nuts at first, but I confirmed this after some > experimentation: after upgrading one of my laptops to Fedora 8, the LCD > backlight seems to autoadjust itself according to the ambient light level in > the room. This did not happen in Fedora 7. > > I left the laptop running, then came back a few minutes later with the > lights off in the room, and the laptop's screen was about half at its usual > brightness. I thought that it was some screensaver at first, but it wasn't. > Uh-oh, is my backlight busted? I turned on the lights in the room, so I > could see better, and immediately the LCD went up to its full brightness > level. I turned the lights off, and a few seconds later the display dimmed > to about a 50% level. WTF? > > This is a no-name brand laptop. I have a small widget directly above the > screen that is labeled with a small etched picture of a microphone. That's, > apparently, my laptop's built-in microphone, which I never used. I > discovered that if I cover up the entire microphone sensor, that triggers > the backlight to dim to half power. Looks like I have an ambient light > sensor in there. News to me -- the laptop's ~2 years old, and I never knew > about it until now. It apparently didn't do anything in F7, neither does the > dual-booted Win XP pay any attention to the came, but in F8 it came alive > and made its presence known. > > Does anyone know anything about this, and, specifically, if there's anything > in F8 Gnome that lets me tweak this sensor's settings? I don't see anything > going to /var/log/messages when I play with the sensor. A brief search > didn't find anything. I don't see anything in the Gnome power management > menu, except the usual global backlight levels for AC Power and Battery > modes, and I can trigger this sensor both on AC Power, and battery power, > apparently. > > > > -- > fedora-list mailing list > fedora-list@xxxxxxxxxx > To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
