Ubuntu 15.04 "wpa_supplicant does not support wifi-display" but "wlan0 supports P2P"

[megamisan]

Hi,

I'm trying this and encountered a strange result. When running miracle-wifid, I get this error message:

WARNING: supplicant: wpa_supplicant does not support wifi-display (supplicant_status_fn() in ../../../src/wifi/wifid-supplicant.c:1768)

But when running the test-hardware-capabilities.sh script, I get

wlan0 supports P2P

The result of iw list is

Wiphy phy0
        max # scan SSIDs: 4
        max scan IEs length: 2257 bytes
        Retry short limit: 7
        Retry long limit: 4
        Coverage class: 0 (up to 0m)
        Device supports RSN-IBSS.
        Device supports AP-side u-APSD.
        Device supports T-DLS.
        Supported Ciphers:
                * WEP40 (00-0f-ac:1)
                * WEP104 (00-0f-ac:5)
                * TKIP (00-0f-ac:2)
                * CCMP (00-0f-ac:4)
                * CMAC (00-0f-ac:6)
        Available Antennas: TX 0x1 RX 0x3
        Configured Antennas: TX 0x1 RX 0x3
        Supported interface modes:
                 * IBSS
                 * managed
                 * AP
                 * AP/VLAN
                 * WDS
                 * monitor
                 * mesh point
                 * P2P-client
                 * P2P-GO
        Band 1:
                Capabilities: 0x11ce
                        HT20/HT40
                        SM Power Save disabled
                        RX HT40 SGI
                        TX STBC
                        RX STBC 1-stream
                        Max AMSDU length: 3839 bytes
                        DSSS/CCK HT40
                Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
                Minimum RX AMPDU time spacing: 8 usec (0x06)
                HT TX/RX MCS rate indexes supported: 0-7
                Bitrates (non-HT):
                        * 1.0 Mbps
                        * 2.0 Mbps (short preamble supported)
                        * 5.5 Mbps (short preamble supported)
                        * 11.0 Mbps (short preamble supported)
                        * 6.0 Mbps
                        * 9.0 Mbps
                        * 12.0 Mbps
                        * 18.0 Mbps
                        * 24.0 Mbps
                        * 36.0 Mbps
                        * 48.0 Mbps
                        * 54.0 Mbps
                Frequencies:
                        * 2412 MHz [1] (14.0 dBm)
                        * 2417 MHz [2] (15.0 dBm)
                        * 2422 MHz [3] (15.0 dBm)
                        * 2427 MHz [4] (15.0 dBm)
                        * 2432 MHz [5] (15.0 dBm)
                        * 2437 MHz [6] (15.0 dBm)
                        * 2442 MHz [7] (15.0 dBm)
                        * 2447 MHz [8] (15.0 dBm)
                        * 2452 MHz [9] (15.0 dBm)
                        * 2457 MHz [10] (15.0 dBm)
                        * 2462 MHz [11] (15.0 dBm)
                        * 2467 MHz [12] (15.0 dBm) (no IR)
                        * 2472 MHz [13] (14.0 dBm) (no IR)
                        * 2484 MHz [14] (17.0 dBm) (no IR)
        Supported commands:
                 * new_interface
                 * set_interface
                 * new_key
                 * start_ap
                 * new_station
                 * new_mpath
                 * set_mesh_config
                 * set_bss
                 * authenticate
                 * associate
                 * deauthenticate
                 * disassociate
                 * join_ibss
                 * join_mesh
                 * remain_on_channel
                 * set_tx_bitrate_mask
                 * frame
                 * frame_wait_cancel
                 * set_wiphy_netns
                 * set_channel
                 * set_wds_peer
                 * tdls_mgmt
                 * tdls_oper
                 * probe_client
                 * set_noack_map
                 * register_beacons
                 * start_p2p_device
                 * set_mcast_rate
                 * channel_switch
                 * Unknown command (104)
                 * connect
                 * disconnect
        Supported TX frame types:
                 * IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * mesh point: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
                 * P2P-device: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
        Supported RX frame types:
                 * IBSS: 0x40 0xb0 0xc0 0xd0
                 * managed: 0x40 0xd0
                 * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
                 * AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
                 * mesh point: 0xb0 0xc0 0xd0
                 * P2P-client: 0x40 0xd0
                 * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
                 * P2P-device: 0x40 0xd0
        software interface modes (can always be added):
                 * AP/VLAN
                 * monitor
        valid interface combinations:
                 * #{ managed } <= 2048, #{ AP, mesh point } <= 8, #{ P2P-client, P2P-GO } <= 1,
                   total <= 2048, #channels <= 1, STA/AP BI must match
                 * #{ WDS } <= 2048,
                   total <= 2048, #channels <= 1, STA/AP BI must match
        HT Capability overrides:
                 * MCS: ff ff ff ff ff ff ff ff ff ff
                 * maximum A-MSDU length
                 * supported channel width
                 * short GI for 40 MHz
                 * max A-MPDU length exponent
                 * min MPDU start spacing
        Device supports TX status socket option.
        Device supports HT-IBSS.
        Device supports SAE with AUTHENTICATE command
        Device supports low priority scan.
        Device supports scan flush.
        Device supports AP scan.
        Device supports per-vif TX power setting
        P2P GO supports CT window setting
        Driver supports a userspace MPM
        Device supports active monitor (which will ACK incoming frames)
        Driver/device bandwidth changes during BSS lifetime (AP/GO mode)

I'm using your custom systemd with dbus and compiled the latest master (commit 30b8c2d).

Do you know where it is wrong?

[albfan]

See this is just the response from a status command

https://github.com/albfan/miraclecast/blob/master/src/wifi/wifid-supplicant.c#L1832

callback supplicant_status_fn

https://github.com/albfan/miraclecast/blob/master/src/wifi/wifid-supplicant.c#L1677

For whatever reason, status command do not inform about p2p_state.

http://www.ubuntuupdates.org/package/core/vivid/universe/updates/wpa

Some people reported you need a recent wpa_supplicant version (2.4). I have 2.3.

#29 (comment)

Anyway use wpa_cli status command to be sure what's happening, or launch miracle-wifid with --log-level trace to see wpa messages.

[megamisan]

Hum… I have looked into it and maybe the feature is not included. I'll check later this week.

[megamisan]

I have checked. The P2P options are activated in wpa 2.1. I have backported the version 2.4 from Wily using sources (https://launchpad.net/ubuntu/+source/wpa/2.4-0ubuntu1). The package can be build without change.
There is no more error on running miracle-wifid.

However when executing "run 3" in miracle-sinkctl it displays the message :

WARNING: supplicant: P2P_FIND failed (supplicant_p2p_find_fn() in ../../../src/wifi/wifid-supplicant.c:1892)

[albfan]

I think these is related with wpa_supplicant. See other closed issues to find more info to update your system