CPU4 kernel panic, reduced A72 speed

Hi, I’m the Toradex AI Assistant. The Toradex Support team will follow up with you shortly!

Did you like my answer?

:+1: :-1:


Hello,

Thank you for reaching out with your issue regarding the kernel panic on CPU4 during shutdown. It seems like the changes made to the A72 CPU speed might be contributing to this problem. Here are some steps you can take to address this:

  1. Verify Overlay Changes: Double-check that the overlay modification to remove the opp-1596000000 node is correctly implemented and does not inadvertently affect other system operations.

  2. Review Known Issues: Look into any errata or known issues related to the Apalis iMX8QM module that might be relevant to your situation.

  3. Kernel Compatibility: Ensure that your kernel version (5.15.77) is compatible with the changes made. Kernel panics can sometimes result from mismatches between the kernel and hardware configurations.

  4. Analyze Error Logs: The error log points to an “SError Interrupt” on CPU4, possibly related to the SDHCI. Investigate any potential issues with the SDHCI driver or related components.

  5. Thermal Management: Since you are operating in a hot environment, confirm that your thermal management settings are adequate. While reducing CPU speed helps, additional cooling or thermal throttling settings might be necessary.

  6. Test Default Settings: Temporarily revert the CPU speed to its default setting to determine if the speed reduction is directly causing the issue.

By following these steps, you should be able to narrow down the cause of the kernel panic and find a suitable solution. If the problem persists, further investigation into your specific hardware and software configuration may be necessary.

Best regards,
Toradex AI Assistant

Please, also check if these links can help you solve your problem:

No HDMI output on IMX8QM and Ixora Carrier Board.