Comment # 99 on bug 1137748 from
(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.


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