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Output of lspci utility contains many "Unknown devices" messages
Symptoms
  • Server with Xeon CPU version 4 shows many "Unknown objects" in the output of "lspci" command comparing to the server with the older Xeon version. 
    [Expert@Hostname:0]# lspci
00:00.0 Host bridge: Intel Corporation Unknown device 6f00 (rev 01)
00:01.0 PCI bridge: Intel Corporation Unknown device 6f02 (rev 01)
00:01.1 PCI bridge: Intel Corporation Unknown device 6f03 (rev 01)
00:02.0 PCI bridge: Intel Corporation Unknown device 6f04 (rev 01)
....
Solution
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