Can you provide kernel logs
Partial kernel logs are attached showing failed and successful s3.
Also can you provided MMIO dump of PORTSC before & after S3 entry.
I still don't know how to dump memory from fedora (could you suggest some tool?).
XHCI MMIO base can be found using command: lspci -s 00:14.0 -vvvk # I guess bus 0, device 0x14, func 0 is XHCI ctrl. region 0 is MMIO base
Region 0: Memory at d1220000 (64-bit, non-prefetchable) [size=64K]
PORTSC for USB3 is in offset range 0x500-0x580.
Still pending because I need a memory dumping tool/command... (I am investigating /dev/crash memory dump).... please advise.
Thank you, Jose.