Replace Failing DIMM in longma

[Firefishy]

longma has a failed DIMM throwing uncorrectable ECC errors.

Uncorrectable ECC / other uncorrectable memory error @P2-DIMMH2(CPU2) - Assertion

P2-DIMMH2:

Max Capable Speed: 3200 MHz
Operating Speed: 3200 MHz
Size: 16384 MiB
Serial No.: 80AD012129855BD695
Part No.: HMA82GR7DJR8N-XN
Manufacturer: SK Hynix

[Firefishy]

System is not stable, it reboots on access to the faulty memory.

[Firefishy]

Downclocked memory to slowest supported speed by BIOS 2666 Mhz and the system still reboots on access to faulty memory.

Kernel boot param memtest=1 has 100% reboot rate on boot.
Without memtest= kernel boots, but reboots when running full stress-ng

[Firefishy]

I will arrange for remote hands to pull the faulty DIMM.

[Firefishy]

I have ordered replacement DIMM, it arrives in Catford stock on Tuesday.

[Firefishy]

Remote hands have removed the faulty DIMM and the system is back in service. Memory will be swapped out during next site visit.

[Firefishy]

Replacement memory is now in stock in Catford.