Critical (Service Event): Uncorrectable Machine Check Exception - ProLiant ML350 Gen11

[ACTSL]

I just install a fresh Debian 12, I disable all suspend energy power, but sometime i got a freezen on server. Ilo work well, but i can't see somthing on console, its black and fans became be noise until i reboot machine. This is the error:

Server - debian1.localhost (serialnumber)
Critical (Service Event): Uncorrectable Machine Check Exception (2 1, APIC ID 0x0, Bank 0x3, Status 0x3187671040'3787719680, Address 0x4294967295'2830877014, Misc 0x4294967295'20).

I update firmware, bios, install on debian program for monitoring, but still for random error. Why this happened?

Best Regards.

[learnHazel]

@ACTSL wrote:

Critical (Service Event): Uncorrectable Machine Check Exception - ProLiant ML350 Gen11
I just install a fresh Debian 12, I disable all suspend energy power, but sometime i got a freezen on server. Ilo work well, but i can't see somthing on console, its black and fans became be noise until i reboot machine. This is the error:

Server - debian1.localhost (serialnumber)
Critical (Service Event): Uncorrectable Machine Check Exception (2 1, APIC ID 0x0, Bank 0x3, Status 0x3187671040'3787719680, Address 0x4294967295'2830877014, Misc 0x4294967295'20).

I update firmware, bios, install on debian program for monitoring, but still for random error. Why this happened?

The "Uncorrectable Machine Check Exception" error typically points to hardware issues, especially with the CPU or memory. Here are a few things to try:

Run Diagnostics: Use HP Insight Diagnostics to check for hardware issues.

Memory Test: Run Memtest86 to check for faulty RAM.

Check Temperatures: Ensure the CPU isn't overheating, which can cause freezes.

Update Drivers: Make sure all hardware drivers, especially for the chipset and storage controllers, are up to date.

Review Logs: Check /var/log/syslog or /var/log/messages for more error details.

Test Power Supply: Make sure the power supply is stable.

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[ACTSL]

I run memtest complete about more than 2 hours and look fine. I open a ticket and i pass again SPP 2025.03 automatically and I watch "UID Indicator" was blue blinking... event restarting system. So I remove power cables, attached again and server are online "up 1 day, 22 hours", I still wants wait more time for tell this its complete resolved.

Thanks for help.

Best Regards.