Problem with miracast on some HP EliteBook 840 G3

[dariol86]

Goodmorning,

I have a strange issue on some hp elitebook 840 G3 in my business. I don't understand the problem but some elitebook cannot use miracast because appear message "you device doens't support miracast" when i try use connect button in Windows 10. But in the past it worked. I already updating OS, wireless drivers and bios but this not fix the problem. Also, if i run the command "netsh wlan show driver" appear

"Display wirless supported: NO (video driver: YES, Wi-Fi divers: NO)

How i can fix this issue?

Thank you.

[John_R32]

Sorry I don't have an answer - just the same problem.

We have our first delivery of 840 G3's and with Windows 10 x64 installed and all drivers installed and updated they have no Miracast support.

Very Frustrating.

John

[John_R32]

I have a case open with HP looking into this issue, this has now been escalated to a 'higher' team.

Hopefully a resolution is just around the corner

John

[tin77]

Hi folks

Is there a known solution for this problem?

Thanks and best regards

Tin

[Siulogoid]

I've the same problem but i can find the device. It just fail while trying to connect. Rarely (very rarely) it works but can't understand how.
Also with all hp updates

[Photoray002]

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@Siulogoid wrote:
I can find the device. It just fails while trying to connect. Rarely (very rarely) it works

---

If you are not using an HP EliteBook 840 G3, then your issue may be unrelated.

But I have the same issue as you on two different laptops that are Miracast enabled. I'm using a one year old LG 4K tv.

I did find a work around by disconnecting the PC's network wifi connection to my router first (don't turn off the wifi card, just the network connection).

Next - go to the TV and enable the connect option.

Go to Connect on the PC (Windows 10) and select the TV to connect to.

It works about 90% of the time. If it fails, I have to disable, then re-enable the connect option on the TV and then the PC again. 

Then I can re-connect the wireless Network connection on the PC.

I dont know if its a Windows 10 update issue that broke functionality or what, but it is aggrevating.

Hope that helps.

[Siulogoid]

Yes laptop is 840 g3 and problem is also with LG 4k TV.

This happens with all tvs in my office and with all 840 g3.

Dell laptops also on Windows 10 connect like a charm in same TVs.

I will test to disconnect network and connect first to TV as you suggested and then let you know.

Thanks

[Photoray002]

@Siulogoid

Update to the work around...

I just tested an Omen PC with an Intel Dual Band AC 7265 card.

I had the same phenomenom if connected via the 5 GHz frequency.

But if I was first connected using the 2.4 GHz option, it connected without any problem.

[Siulogoid]

Confirmed. It worked.

 - Disconnected from wireless network

 - Connected to miracast

 - Connected to wireless again 

[Photoray002]

Good to know.

It would be interesting to know if your Dells that worked, were using the 2.4 GHz band or 5 GHz also.

If you find out. let me know please.

Thanks.