(In reply to Takashi Iwai from comment #77) > BTW, one more thing that came to my mind. There is a known issue in XHCI > that can trigger spurious wakeups at suspend or shutdown, and the workaround > is applied only to limited platforms. For testing that, > - Disable ACPI wakeups in /proc/acpi/wakeup, and > - Boot with xhci_hcd.quirks=0x42000 option. Tried this - did not change the problem. Did not fully suspend, like before. What I noticed during my test (don't know if it is of relevance here): During the failed attempt to suspend my system time got changed one hour ahead, matching hw clock with UTC.