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New Member
Posts: 3
Registered: ‎12-29-2018

TV, 2nd monitor, laptop, rocketfish, HDMI

I have a Rocketfish HDMI splitter.  My laptop HDMI goes to the INPUT of the splitter, and the two OUTPUTs go to an HP monitor and a Samsung TV.

 

The display is the same on the monitor and TV, as expected.

 

However, if I power-off the HP monitor, the laptop stops outputting to HDMI port, the TV screen goes black, and the laptop display comes back on.

 

BUT: if I turn off the TV, the HP monitor still has the laptop output on it.

 

Why does turning off the monitor cause the laptop to think that there is no longer an HDMI device present?

 

 

Posts: 2,152
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Blog Posts: 16
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Registered: ‎08-08-2017

Re: TV, 2nd monitor, laptop, rocketfish, HDMI

Hello Seitchik,

 

Welcome to our community, and thanks for reaching out to us.  If you will please share the model number of your Rocketfish product, I'll be happy to see what answers I can find for you.

 

Thanks,

Sam|Retired Social Media Specialist | Best Buy® Corporate
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New Member
Posts: 3
Registered: ‎12-29-2018

Re: TV, 2nd monitor, laptop, rocketfish, HDMI

Hi Sam,

 

Thanks for asking.

 

RG-G1182, 1-in, 2-out HDMI splitter.

 

A couple of details: have monitor on, then turn TV on.  Monitor sometimes goes blank, then comes back.  Sometimes I have to use the mouse to wake up the laptop.  But sometimes, with the monitor on, if I turn the TV on, there's no impact on the monitor.

 

Monitor on, TV on.  Turn TV off: monitor goes blank, laptop thinks that there is no HDMI connected, reverts to laptop screen.

 

Lou

Posts: 6,856
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Kudos: 411
Solutions: 314
Registered: ‎11-30-2015

Re: TV, 2nd monitor, laptop, rocketfish, HDMI

Hello Seitchik,

 

I personally use a version of this same splitter in my HT set up!  Sam’s currently away from his desk, but I’d be happy to jump in to see how I can help you.

 

Can you please check the display settings on your laptop? There should be an option to ensure that it always displays and doesn’t sleep. Also, the support materials on Rocketfish’s website shares to double check that the CEC functions are disabled on all the connected devices. Let me know if those fixes don’t resolve your issue and we’d be happy to see what other troubleshooting we can recommend.

 

Respectfully,

Mariah|Social Media Specialist | Best Buy® Corporate
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New Member
Posts: 3
Registered: ‎12-29-2018

Re: TV, 2nd monitor, laptop, rocketfish, HDMI

Hi Mariah,

 

I tried the CEC functions both ways on the TV.  But, there was no way to enable/disable the CEC function on my monitor, and I think that is the issue.  When I turn off the monitor, it tells the laptop "no HDMI" and for some reason, having the TV on, even with CEC enabled, doesn't overcome that.

 

So...I gave up and bought a Chromecast.

 

Thanks for your help.

Posts: 6,856
Topics: 130
Kudos: 411
Solutions: 314
Registered: ‎11-30-2015

Re: TV, 2nd monitor, laptop, rocketfish, HDMI

Hello Seitchik,

 

Thanks for sharing what you ended up doing! I’m sorry for our delayed response to you. I’ve also used Chromecast in the past and it’s a great option too. Let us know if you have any other questions as they come up. We’re always happy to see how we may be able to help.

 

Respectfully,

Mariah|Social Media Specialist | Best Buy® Corporate
Give Kudos if you like this post or Accept as Solution if it answers your query!