Replies

Maybe I don't know. Preferences>Display>Uncheck 'mirror displays'>Gather windows>Scaled display>select resolution. So what, pray tell, am I doing wrong?

OK. My apologies. However, I don't know what is wrong. I use Macs and have supported them for years on many different types of multisynch monitors. . . and have never had it not show that as an option on a monitor that's capable of the resolution. There was a time when Multisync monitors were the exception rather than the rule they are today. Check the refresh rate you are sending the signal at. Some resolutions just don't work right at certain refresh rates on some monitors. Some multisyncs work fine at every refresh rate from 50 to 90 Hz. . . and others are so finicky they get a black screen on everything except a very few resolutions they like. Sometimes, some resolutions will not show up on the Apple display requestor at some refresh rates that are non-standard. See if that helps.

Sometimes, some resolutions will not show up on the Apple display requestor at some refresh rates that are non-standard. See if that helps.

But it's not just a refresh rate issue. The resolutions aren't present at all. I've had two presenters come through today so far, the first one was fine and had no issues. The second one's (MacAir) only offered 3 resolutions on the secondary output, 800x600, 1024x768, and 1280x960. Nothing else. The main display can do a wide range, but the extended was extremely limited.