HDMI connection to TV failed since 'Gatekeeper' was installed on 2/12/15. It was an automatic install from Apple. Tried all tips noted on other pages, please help!
Mac mini, OS X Yosemite (10.10.2), HDMI-failed-'gatekeeper instl. 2/12
Just what do you mean by "Gatekeeper' was installed on 2/12/15"
Gatekeeper is a feature that allows you to control installation of app, not video output.
OS X: About Gatekeeper - Apple Support
What happens when you try to use HDMI?
Have you tried another monitor and cable?
Just what do you mean by "Gatekeeper' was installed on 2/12/15"
Gatekeeper is a feature that allows you to control installation of app, not video output.
OS X: About Gatekeeper - Apple Support
What happens when you try to use HDMI?
Have you tried another monitor and cable?
HDMI cable is good, works on RoKu and had been working fine with our mac mini, but noticed on 2/12/15 @12:48p, version 59 of gatekeeper configuration data was installed. That night the HDMI did not work on TV...keeps reading "no signal" which we tried rebooting several times, sprayed electronics cleaner on it last night, tried a different cable (15') instead of the 5', took back to regular old monitor, restarted and works fine. Even tried the 'apple' adaptor that came with mini...same thing "no signal". I don't know and didn't know what a "gatekeeper" was, looks like they started doing these configurations on 9/17/2014. Do not have another monitor that uses HDMI, no lap top, only a iPhone 4. Any hints you can give me would be helpful...Thanks, CC
Try resetting the SMC and NVRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
When you boot with only HDMI monitor connected does anything show during bootup?
I'll try the plug up then if nothing happens I'll reset the SMC. This language is a little over my head, just finished reading the entire link about 'gatekeeper, I'll keep you informed as to what happens. Your very helpful, love my mac!!
Our one TV is the only HDMI monitor. Tried all the resetting, still shows 'no signal' on HDMI TV. Obviously it's working but not on HDMI. Does the 'Sudden Motion Sensor' kick in while carrying to another room? I can't reset the NVRAM or PRAM b\c my keyboard does not show "Option-R-P". Has good air vent., doesn't show anything but regular booting when restart or reboot process. Does show Adobe Flash trying to install when shutting down but can't get to it fast enough. Does it need to finish the download for AFplayer? Or is it a motion sensor? Everything else is working fine, scanner, printer, DVD (apple). Should I reboot my router (isp)and wifi(apple) products?
"Option-R-P" is depressing the three keys, Option, R and P at the same time.
Try starting in Safe Mode and install Flash
OS X: What is Safe Boot, Safe Mode?
For HDMI problem
- Make an appointment at the Genius Bar of an Apple store.
There is not an 'option' key on this keyboard. Moved last adobe flash player install into trash. Yeah, I get it, was trying not to spend $$$ on a fix but may not have an option. Is there any other key to use for an 'option' key.
Then you do not have an Apple KB. It would have bben nice it yo said that before.
Use:
No, said it was apple compatible wireless mouse and keyboard. A generic that works with apple. Sorry if I wasted your time. I'll look at the mappings below thanks,
CC
Sent from Apple ANNIE
(Cyndi Chase)
Well you have been very helpful with your links but unable to reboot the NVRAM or PRAM. Nothing happened after four different tries. PC still working A-OK on old monitor but not with TV. Unless there is something else you can think of, I may have to take it in to the genius's.
A+++ service, thank you.
CC
Sent from Apple ANNIE
(Cyndi Chase)
Option key on Non-Apple keyboards is the alt key.
Putting this one to rest. Found a PC adaptor line, hooked into thunderbolt line then to TV. Brought out speakers from office and have audio. Inspected the HDMI plug on back of Mac Mini and found a slightly askew pin. Send a link to purchase new Apple plug, HDMI, we may do this ourselves if not too involved. Thanks to all who answered questions. This keyboard was purchase to work and be wireless otherwise it's useless just Apple compatible.
It is hard to find Apple part number for parts not normally replaced like the HDMI plug. It is still harder to get the parts.
Step 14 shows the connectors on the back on the Mini
https://www.ifixit.com/Teardown/Mac+Mini+Mid+2011+Teardown/6131
- Make an appointment at the Genius Bar of an Apple store and discuss it with them.
lllaass wrote:
"Option-R-P" is depressing the three keys, Option, R and P at the same time.
Shouldn't that read "Cmd-Option-R-P" four keys?
I'll try the plug up then if nothing happens I'll reset the SMC. This language is a little over my head, just finished reading the entire link about 'gatekeeper, I'll keep you informed as to what happens. Your very helpful, love my mac!! Update: 2/17/15 tried both ways C-O-P-R and O-R-R neither did anything, even had my husband turn it on and as soon as I heard the rough or start up, it did nothing. Crappy keyboard but it does serve a purpose...I am writing this to you!
Have 2011 Mac Mini. A 'gatekeeper' was installed by Apple 2/12/15, have not been able to connect with HDMI cable to TV since then. Have all Yosemite updates...HELP?
