I have wide black side bars that part of the finder is hiding under
I left the machine on as I slept and I now have wide blank side bars on the screen.
Display Preferences help tells me about using the options button, but I have no options there.
Parts of my menu bar is hidden under the extra black side bands and I can not slide the screen to see those now hidden on screen menu controls.
I might have accidentally tripped some setting in my sleep with the mouse in my hand....... I'd like to open the displays options settings and fix the displayed edge of my screen but I can't get those settings to appear for me.
I'm using a Panasonic 39" 1080 TV on this computer and the Display preference screen seems to be locked into that and won't let me change it to a more general set of display options that would allow me to change overscan and the like.
AS IS NOW PARTS OF THE WORKING SCREEN ARE UNDER THE NEW WIDE BLACK SIDE BARS AND PART OF THE MENU BAR IS UNSEEABLE.
Displays will not allow me to reduce the screen display enough to see the entire screen.
The TV's settings in the TV shows me that it didn't change and that it is displaying normally at full screen.
The Mac mini is projecting those wide side bars and hiding part of the normal sized screen display under those. The background image is the normal size, but partly hidden under those black edges.
My screen is the normally displayed size, but added wide black side bars are hiding the far side edges.I reset the dock to the bottom from my normal position on the left to be able to use it after this problem happened..... the left and right parts of that are hidden by the black bars.
I shut down and restarted, but the screen is still messaged up. I tried the few display resolution options it is allowing, but the wide black margins remain unchanged. It's like the Mac is using the full screen width, while not projecting in the full screen width.
As of now, Its like the normal screen size is there, but the Mac is clipping its displayed screen size, hidding the right and left margins of all of the desktop.
How do I get to the expanded display options in the display box to fix this????? How can I get out of this lock on the Panasonic display that the Mac is locked into?
How can I normalize my display? How can I get to the full display settings ????
Mac mini, OS X Yosemite (10.10.5), Using Panasonic 39" TV at 1080