CarlinKit 5.0 CPC200-2air Wifi wont start

[imedium3]

userspace.log
Hi,
I recently purchased a CarlinKit 5.0 CPC200-2air, which initially worked well for a couple of months. Now, the device is experiencing problems: it no longer starts Android Auto, and it can't connect to Wi‑Fi. Although the Bluetooth connection remains stable, Android Auto fails to link with the car system. I attempted both downgrading and upgrading the firmware—including testing a custom firmware version (2024.01.18.1053)—but the issue persists. The logs reveal that while the Wi‑Fi device is detected, it fails to start, suggesting a possible driver problem. I can debug the kit via USB and am seeking assistance to resolve these issues.

Explanation of the Problem:

Device Background:
The CarlinKit 5.0 CPC200-2air initially functioned properly for several months after purchase.

Current Symptoms:
    Android Auto Issue: The system no longer launches Android Auto, preventing its normal operation with the car.
    Wi‑Fi Connectivity Issue: The device fails to access Wi‑Fi, even though the hardware seems to be recognized.
    Bluetooth Functionality: Bluetooth remains operational, indicating that the issue is likely isolated to Wi‑Fi and Android Auto functions.

Troubleshooting Attempts:
    Firmware Changes: Both downgrading and upgrading the firmware have been tried, including the installation of a custom firmware version.
    Log Insights: The logs show that the Wi‑Fi device is found, but it cannot start—this points to a driver issue.
    Debugging Capability: USB debugging is available for further investigation.

Likely Cause:
The consistent error with the Wi‑Fi startup, as indicated by the logs, suggests that a problematic driver may be preventing both Wi‑Fi connectivity and, consequently, Android Auto from functioning properly.

Enclosed userspace.log

[Zubastic]

nl80211 driver initialization failed.
wlan0: interface state UNINITIALIZED->DISABLED
wlan0: AP-DISABLED 
wlan0: CTRL-EVENT-TERMINATING 
hostapd_free_hapd_data: Interface wlan0 wasn't started

Something with drivers. Maybe hardware problem.

I compared with my working U2AC device. Different Card ID: your - 0x4358 Mine - 0xb822.

Save your device id and flash image from repo.

Why u not asking carlinkit support? Maybe they just replace your device with new one?

[imedium3]

Hi

Thank you for your reply, i asked them and the agreed to replace it after receiving the faulty device but i cant send it as i purchased it on a travel trip now sending it nack is a bit complicated :)

[Zubastic]

Ask them, may you destroy device with hammer for video.