Unable to establish P2P connection for miracast using gnome-network-displays

Jouni Malinen j at w1.fi
Sun Jan 14 10:00:50 PST 2024

On Fri, Jan 05, 2024 at 10:46:57AM +0100, Julian Sikorski wrote:
> I am trying to figure out why gnome-network-displays is unable to establish
> a P2P connection with my Fire TV stick. I originally reported it to
> gnome-network displays, then to NetworkManager before being directed here.
> In brief, the p2p connection never goes up so I can never attempt to capture
> packets using wireshark or tcpdump. Same laptop and same Fire TV Stick work
> fine from Windows 11.
> I am attaching the wpa_supplicant debug log. Thank you for your help in
> advance.

Which WLAN driver are you using on this device (wlp1s0)?

It looks like the peer device might be using power saving mechanism
(Notice of Absence) that would require the local driver to be able to
synchronize the transmissions appropriately to be able to get them
through. The debug log here indicated that none of the numerous attempts
of sending a GO Negotiation Request to the peer resulted in the frame
being acknowledged which could imply that it was not listening at the
time the request went out. That said, it is difficult to say for certain
since the peer discovery part did succeed. In any case, this type of an
issue might require looking in more detail to a sniffer capture of the
IEEE 802.11 frames and the exact timing of them and/or figuring out what
kind of capabilities the local driver has for P2P.

Jouni Malinen                                            PGP id EFC895FA

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