Carefully comparing them found BYTE 7 is changed from 0x08, 0x40 to
0x00, it is Status Register(These read-only bits reflect the temporary
status of the device/function when fwst read the register). These bits
are "Signaled Target Abort", "Signaled System Error". This can indicate
that before sleeping, it happened a target device terminates a
transaction with Target-Abort, and device asserts SERR# error signal,
but after wake these error status disappeared.

I think this can be safely ignored.

** Changed in: linux-lts-saucy (Ubuntu)
       Status: New => Won't Fix

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https://bugs.launchpad.net/bugs/1308480

Title:
  [HP Pavilion 20 AIO] High failures (DevConfigDiffAfterS3) found in
  suspend / hibernate report

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