why does my screen resolution keep changing

I tried everything to fix this issues, reseting the nvram worked after a reboot but the next time the monitor 'slept' the problem occured again. I had a similar problem with an iMac from 2009, my second display is connected via a firewire-to-VGA adapter. So to anyone that has this problem in the future, it could be something in the actual DVI adaptor that could be having the issue too! If all fails, try unplugging the adaptor from your monitor cable and see if that works.

Until I thought, what about unplugging the VGA from the DVI adaptor? Well I did that, connected back together and voila, screen reset. Needless to say I was getting pretty frustrated. STILL not resetting back to best display for that monitor.

Turn everything off, restart computer while pushing Command + Option + P + R, turn everything back on, plug back in.

Go to display settings, push Option to get 'Detect Displays', clicked, no change.

Unplug, power off monitor, restart mac, plug back in, and then power back on.

Unplug and power off the monitor, turn back and on and plug back in.

This is what I did before I found the issue.Īfter the computer would come back on after sleep (macbook pro mavericks, screaming computer with 8gigs ram, retina) the right side monitor, out of the 2 monitors I have plugged in by VGA->DVI, continued to be reset from 1600x900 to 800圆00.

Why does my screen resolution keep changing