DiPlay Wi-Fi Direct Not Working on Android 10

Symptom

The app fails or closes while creating the P2P group, before CarPlay appears.

Possible causes

0.2.13 adds firmware-dependent Android 9 Wi-Fi Direct using actual group credentials. Requested channels remain unverified on Android 9; Android 10+ verifies frequency. Cleanup retains persistent profiles (PR #282).

Quick checks

1. 0.2.13 adds firmware-dependent Android 9 Wi-Fi Direct using actual group credentials. Requested channels remain unverified on Android 9; Android 10+ verifies frequency. Cleanup retains persistent profiles (PR #282).
2. Grant Wi-Fi/Location or Nearby Wi-Fi permissions as requested and enable Location where required.
3. Close other projection apps. For stale groups, use Settings → Wireless connection help → Reset CarPlay Wi-Fi and review the confirmation.
4. Record requested and actual channel/frequency in diagnostics. Compare the car hotspot instead of changing country/driver properties.

Reported results & workarounds

The current source retains the requested SSID instead of reading config.networkName. In #79 the maintainer attributes a fix to 0.2.8; the reporter tested a custom build and had not retested the public APK.

Version status

0.2.13 adds firmware-dependent Android 9 Wi-Fi Direct using actual group credentials. Requested channels remain unverified on Android 9; Android 10+ verifies frequency. Cleanup retains persistent profiles (PR #282).

Wireless startup can choose a free AirPlay port; Wi-Fi Direct handles unknown security reports, busy channels and bounded 5 GHz to 2.4 GHz fallback (PR #121/#143). Wi-Fi Direct packet loss, device-specific microphone input and reconnect problems still need hardware investigation; no universal fix is claimed.

Changes and checks in 0.2.13

0.2.13 adds firmware-dependent Android 9 Wi-Fi Direct using actual group credentials. Requested channels remain unverified on Android 9; Android 10+ verifies frequency. Cleanup retains persistent profiles (PR #282).

Wireless prefers usable IPv4 with scoped IPv6 fallback; Auto channel selection has no band or stutter guarantee. Interface mDNS avoids an unused NSD service; handoff fallback requires rendered video. Experimental hotspot join repair needs Android 13+, a user-configured 5 GHz-only hotspot, supported APIs, authorized localhost ADB and explicit confirmation while disconnected (PR #251/#258/#283/#309/#313).

The APK signing certificate matches 0.2.12. Update the same package in place to retain settings/pairing. Reproduce failures on 0.2.13 and save a fresh diagnostic report: Android 10+ uses Downloads/DiPlay, Android 9 a picker; View report/Share and app/private-storage fallbacks remain. No automatic upload occurs.

Changes and checks in 0.2.12

On eligible Android 10 hotspot/Wi-Fi Direct sessions, optional authorized local ADB can pause station scans. Same LAN is excluded; automatic joining of saved networks is unavailable while paused. Recovery markers and retries restore scans, including after reopening; this is not a universal stutter fix (PR #225).

Hotspot startup checks the actual AP interface and bounds retries when AirPlay never connects. Optional automatic hotspot startup remains off by default; its fallback needs supported firmware commands, authorized local ADB and observed readiness, not just a successful command (PR #229/#235).

Retest repaired DiLink 3/4 cluster routes, scan recovery, wheel modes and firmware-specific hotspot startup. General stutter, calls/Siri/microphone, iOS 15 startup and colour/theme reports still need fresh current-device evidence.

Changes and checks in 0.2.11

Wi-Fi Direct adds Preferred channel under Connection setup. Auto is the default; a saved manual channel applies on the next connection. Unsupported or mismatched channels report an error. This is not a confirmed audio-stutter fix (PR #175).

On Android 10, only the exact missing WifiP2pConfig.getNetworkName() framework-Builder signature before group creation permits one system-default attempt in Auto mode. Permission failures, timeouts and explicit channels do not use it. The old #15 report still needs a current-device retest.

Manual channel selection is not a confirmed fix for Wi-Fi Direct loss/stutter. Qin Plus startup, iOS 15 connections, Siri/microphone quality and day/night firmware behavior still need current-device evidence.

Changes and checks in 0.2.10

Fresh 0.2.10 logs are needed for wireless timeouts (#98/#134/#137/#142), rotation/reconnects (#119/#141), audio stutter (#131) and calls/Siri (#103/#115/#117/#138).

Reported setups

The following are source reports, not a universal affected-car list. Unknown fields remain unknown.

Related GitHub issues

Closed does not necessarily mean fixed. The source is authoritative for later updates.