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MWDXER
Level 11

Re: Screen mirroring not working

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Roku's screen mirroring, I rarely get it to work. For casting I just use the Cromecast. Much easier.
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atc98092
Community Streaming Expert

Re: Screen mirroring not working

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Screen mirroring from a Windows computer is usually more of a Windows issue rather than a Roku problem. Windows has very specific hardware requirements for it to work. I have found the screen mirroring works fine from Android devices, and it's almost impossible from Apple devices. There's just no "standard" for mirroring, so everyone does it differently. If I want my PC to display on the screen, I just connect it via HDMI or VGA connections. Mirroring is just too much of a pain. 
Dan

Roku Community Streaming Expert

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trekkeriii
Level 11

Re: Screen mirroring not working

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"atc98092" wrote:
 I have found the screen mirroring works fine from Android devices. 

Google's Flagship devices since the Nexus 6 only do Chromecast, not Miracast. I think Samsung Androids do have Miracast.
http://trekkeriii.com/Roku_PHP_list.php
Router - ASUS RT-AC68U
ISP - AT&T- 1000 Mbps/1000 Mbps
Net+ Cert
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MWDXER
Level 11

Re: Screen mirroring not working

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I have the Chromecast app on both my Win 7 laptop and my old son's Chromebook. It works better on the Chromebook, less delay and not as glitchy.
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RokuTannerD
Retired Employee

Re: Screen mirroring not working

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@mgates67 

Does restarting the TV from Settings>System>Power>System restart help clear up the issue and allow you to connect? 

If that still isn't working, and you aren't able to connect successfully, please generate a issue report tracker ID by pressing the home button 5 times, then the back button 5 times quickly. Send me a private message with your Roku account email address, your TV's serial number from Settings>System>About, and include the issue report tracker ID. I'll follow up with you directly to see what else we may be able to suggest. 


Thanks,
Tanner
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atc98092
Community Streaming Expert

Re: Screen mirroring not working

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"trekkeriii" wrote:
"atc98092" wrote:
 I have found the screen mirroring works fine from Android devices. 

Google's Flagship devices since the Nexus 6 only do Chromecast, not Miracast. I think Samsung Androids do have Miracast.

Yeah, it was a Galaxy S8 that I was using. The battery just blew up on me, so I was forced to buy a new phone. Since my grandkids all have iPads, I had to get an iPhone so they can iMessage me. What we do for our kids and grandkids...  Smiley LOL
Dan

Roku Community Streaming Expert

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Chicken
Level 10

Re: Screen mirroring not working

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I was just able to mirror the screen from a Galaxy J7 running Android 9 to a Roku by using the "Smart View" icon on the pulldown notifications menu.  Audio worked as well, I played a short MP4 as a test.
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StreamerUser
Level 20

Re: How to fix screen mirroring not working with my Roku device

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"atc98092" wrote:
Screen mirroring from a Windows computer is usually more of a Windows issue rather than a Roku problem. Windows has very specific hardware requirements for it to work. I have found the screen mirroring works fine from Android devices, and it's almost impossible from Apple devices. There's just no "standard" for mirroring, so everyone does it differently. If I want my PC to display on the screen, I just connect it via HDMI or VGA connections. Mirroring is just too much of a pain. 


Except that Miracast is a standard, built on standards, and not a new one:

https://en.wikipedia.org/wiki/Miracast



"Miracast is a standard for wireless connections from devices (such as laptops, tablets, or smartphones) to displays (such as TVs, monitors or projectors), introduced in 2012 by the Wi-Fi Alliance. It can roughly be described as "HDMI over Wi-Fi", replacing the cable from the device to the display.

The Wi-Fi Alliance maintains a list of certified devices, which numbered over 6,700 as of 9 March 2017"

The fact is, two major device OS makers either never opted in (Apple), or later opted out in favor of their own proprietary protocol(s) (Google) - and both are members of the WiFi Alliance.

https://www.wi-fi.org/membership/member-companies



The standard exists, but so do non-compliance agendas.

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atc98092
Community Streaming Expert

Re: Screen mirroring not working

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Yes, Miracast is a standard, but what I'm saying is that not everyone supports Miracast. It's not a matter of compliance, it's a decision that someone somewhere has made that they would use a different method. This is one area that it would be nice to have a single standard that everyone complies with. But we're dealing with people, and some people are just going to do something the way they decide, regardless how it works for others. 
.
You can look no further than the CEC protocol. So many manufacturers "tweak" their products so they work perfectly between their own products but don't always play well with others. I've been fortunate that CEC seems to work well with my Samsung, Yamaha, Nvidia Shield and Roku devices, but my Panasonic TV demands a certain power up sequence or the TV remote volume buttons won't control my Yamaha AVR. 
Dan

Roku Community Streaming Expert

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NYER566
Level 7

Re: Screen mirroring not working

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Screen mirroring was fine until the spring windows 1903 update. I had to reinstall new drivers which is normal. Before the update mirroring worked great. Now almost everytime I want to mirror my laptop to my roku i think its #2 not sure. When it does find my roku it works fine. Then when I shut down my computer and log back on its gone. No mirroring. I have to search for roku again. This is getting to be a real pain in the butt! does anyone have any answers as to why the Roku disappears afer I shut my computer down for the night then Roku is not showing and I have to go through the whole process to discover Roku again. Any help would be great.