(What's happening? I was sure I had posted this already...) OK, I did my homework better this time and it turns out the button on the screen's frame (Apple Studio Display 17") doesn't bring up the brightness dialog even when it's the only screen connected to the PowerMac. That's not as I remember it, but I can't say 100% sure that it has worked correctly in the past, because I've been working with several such screens.
So I looked around where the display prefs are and moved them (there were two files) to the desktop, then restarted. The button's behaviour remained the same: it lights up when pressed, but no dialog box appears. Anyway, no new prefs file was created until I changed the profile of a monitor, which gives me the feeling these display prefs are not involved with this error. Maybe it's hardware, after all? Or the system software? I really don't know. I guess the next step will be to borrow a ADC screen and see how that behaves on this computer, or connect this screen on a different PowerMac. "Now" implies something has changed...what is it? Do you get the expected > behavior back when whatever that is is undone? You should be able to do > everything separately on the two monitors. Did you try trashing the display > prefs? Changing monitor profiles? > > > -- > Bruce Johnson > University of Arizona > College of Pharmacy > Information Technology Group > > Institutions do not have opinions, merely customs > > > -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list