Macbook air - Input signal not found with - HP27es Monitor

Question

bhavaniravi Author

Level 1

9 points

Macbook air - Input signal not found with - HP27es Monitor

I had a Macbook air with Mojave. I moved my monitor to a new location.

When I reset it the monitor was working for a few hours when I put my

system to sleep and connected back the system won't recognize the

monitor.

Here is how it's Connected

HP27es monitor -> HDMI -> Iball 4 port connector -> Macbook air

Here are a list of all the things I tried after that

Checked the HDMI cable with my DELL laptop works fine
Got another HDMI cable worked fine with DELL
Connected Macbook laptop to my Sony Bravia with Iball connector, connected fine
Rebooted a million times
Detect display via system preference
Tried in safe mode
Reset NVRAM
Downloaded displaylink driver
Updated to Catalina and repeat steps 4-8 again

I have been stuck with this for 2 days now. Some one please help me

Posted on Aug 27, 2020 2:46 AM

Reply

Answer 1

raina_b22

Community Specialist

Aug 28, 2020 10:52 AM in response to bhavaniravi

Hello bhavaniravi,

Thanks for using Apple Support Communities!

We understand you are experiencing some issues with using a specific external display with your MacBook Air. We are happy to help look in to this with you and provide some guidance.

You have taken some fantastic steps already to troubleshoot and isolate the issue here, but we would like to see if we can provide some additional help.

Have you attempted to connect that HP27es display directly to your MacBook without using the 4 port connector? Since the display seems to work with other devices, and your MacBook works with other displays, we want to narrow down the issue to see where the issue is coming from.

We also have some additional troubleshooting tips outlined in this helpful article:

Get help with video issues on external displays connected to your Mac

We hope this helps!

Best Regards.

Reply

Answer 2

bhavaniravi Author

Level 1

9 points

Sep 1, 2020 5:49 AM in response to bhavaniravi

Guess what happened today!!!!

I got a new HDMI -> Type C convertor and it just worked.

Still don't know why the connector worked with the TV and not this monitor. Anyways I have something working now

Reply

Answer 3

jdo_apple

Community Specialist

Aug 29, 2020 9:20 AM in response to bhavaniravi

Hey there bhavaniravi,

Thanks for following up and providing that information. Let's continue to look in to what we can do. If you haven't already, try connecting your USB-C adapter to a different USB-C port on your Mac if one is available and try again.

Another thing we can try is when you have the external display connected to your Mac, please try going to the Apple Menu  > Sleep, and let the Mac fully close and go to sleep. Once it is asleep, try waking it up again to see if that might pick up that display from sleep when it wakes back up.

If the issues continue, please reach out to us directly by using this link: Get Support

Cheers.

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Answer 4

Joseph_S.

Community Specialist

Sep 1, 2020 6:14 AM in response to bhavaniravi

Hello bhavaniravi,

Thanks for getting back to us. If you are experiencing issues using the link to get ahold of us, please use the number in this link that matches your location:

Contact Apple for support and service

Best Regards.

Reply