I checked the BIOS image and found that the cpuid of EMR A0 was actually listed in microcode section
ES Xeon Discussion
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it just blacked out after UPI initialization with the BMC. So not sure about the root cause
you need special tweaked BIOS for EMR A0,
i noticed Q30G and Q2T7 behave very different.
i had that once(no display) is typical gigabyte issue sometimes,
re-plug VGA conn. to get picture....
i checked that with MS33-AR0 BIOS R10(latest for this) 5 minutes to POST, even at windows reboot.
but we have all the time in the world thought.
I have 1 Xeon 8260 QQ89 ES in a Dell poweredge r640 and PCIE devices are outputting errors and are not recognized. (an M.2 carrier card, and a dual gigabit pcie x1 nic) I'm thinking of updating the bios to most current revision, current revision I have installed is 2.13.3, should I update to the 2.23 BIOS revision or is there a special BIOS section that I would need to roll back to to get functionality back? The PCIE devices worked fine when dual 4114s were installed, and the PERC card is recognized which is on a pcie x8 link, which makes me think it's likely a BIOS issue. Thanks!
As you're pointing out - this is ES version of CPU, it's better to test in on another machine to validate what PCIe lanes are working fine there.
Otherwise you might be suspecting it's because of BIOS but it could be something else not related to DELL PC.
But generally yes, I would start cutting off some advanced functionality (e.g. disabling CPU features that are not needed for home testbench, like encryption, isolation, and so on) or modify config settings (latencies, master bus, packet size, legacy rom, enforce PCIe generation to avoid unnecessary detection, etc.) as alternative.
maybe you use PCIe slots connected to processor2 and need two CPU installed ?
My test CPU Xeon 3204 is good work with 32Gb memory modules KSM26RS4/32MFR and KSM26RS4/32HAI
I bought two Xeon 8259CL and testing with 8gbit 32Gb memory modules. All was Ok. But do not work with 16gbit above memory modules. Very strange.
I right understood that 8259CL have "old" memory controller of Skylake-SP family or may be another not know me problem?
Add: My motherboard is Lenovo P920 with VRM ICC_MAX mod.
I bought two Xeon 8259CL and testing with 8gbit 32Gb memory modules. All was Ok. But do not work with 16gbit above memory modules. Very strange.
I right understood that 8259CL have "old" memory controller of Skylake-SP family or may be another not know me problem?
Add: My motherboard is Lenovo P920 with VRM ICC_MAX mod.
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8259CL supports PMEM and no UDIMM, Skylake no PMEM but UDIMM.
'C' confidential SKU for select customers. you get no info about those.
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Thanks. I understand this. I have six modules and think now how found support it CPU for good price))
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