System: Precision 5520
Linux Kernel: 4.10.8
mcelog is reporting reporting the following errors
CPUID Vendor Intel Family 6 Model 158mcelog: Family 6 Model 9e CPU: only decoding architectural errorsHardware event. This is not a software error.MCE 3CPU 0 BANK 9 MISC 4388000c086 ADDR fef1cec0 TIME 1491349670 Tue Apr 4 18:47:50 2017MCG status:MCi status:Error overflowUncorrected errorMCi_MISC register validMCi_ADDR register validProcessor context corruptMCA: corrected filtering (some unreported errors in same region)Generic CACHE Level-2 Generic ErrorSTATUS ee0000000040110a MCGSTATUS 0MCGCAP c0a APICID 0 SOCKETID 0
Looking around the web, many people are getting this in both Ubunut and Fedora
I used to see those on my kabylake XPS13 9360. I saw that error at boot and on every resume from November 2016 until Feb 4 when I installed an updated BIOS (file name XPS_9360_1.3.2.exe, sha1 8fea8ba38a5afccbc65436898d377324fdc60e7a).
I would expect the 5520 to receive an updated BIOS to address the problem like the 9360.
I have heard the same from other users like you. Hoping Dell will release an update soon
The Problem still occurs with BIOS Version 1.2.4