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Based on the context provided, the kernel panic you are experiencing is likely related to the power supply change and its impact on the SD card’s filesystem. Here are some possible causes and recommendations:
Possible Causes:
- Filesystem Corruption: Switching power sources while the system is running can lead to filesystem corruption, especially if the SD card was being accessed at the time. This is a common issue when power is interrupted unexpectedly.
- Improper Shutdown: If the board was not properly powered down before switching back to USB power, it could have caused issues with the SD card’s filesystem integrity.
- Power Supply Issues: An unstable power supply can lead to voltage fluctuations that may corrupt the filesystem on the SD card. If the power supply was not stable during the transition, it could have affected the SD card’s integrity.
- Jumper Configuration: Ensuring that the jumper (JP1) is correctly configured when switching power sources is crucial. If the jumper was not properly set, it could lead to hardware conflicts or power issues.
Recommendations:
- Check SD Card Integrity: Use filesystem check tools to verify the integrity of the SD card. If corruption is found, re-flashing the image may be necessary to restore functionality.
- Follow Proper Shutdown Procedures: Always ensure that the system is powered down completely before switching power sources to avoid potential corruption of the filesystem.
- Use Stable Power Supplies: Ensure that the power supply used is stable and meets the specifications required by the Colibri i.MX6ULL to prevent similar issues in the future.
In conclusion, it is possible that changing the power supply method has led to corruption of the SD card’s root filesystem. Following the recommendations above should help in resolving the issue and preventing it in the future.
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