I have a Fujitsu SH760, and this issue also affects me. Removing the
xhci module allows the suspend to happen, so this is definitely the
culprit. Details of my USB3 controller (from lspci -v) are:
20:00.0 USB Controller: NEC Corporation Device 0194 (rev 03) (prog-if 30)
Subsystem: Fujitsu Limited. Device 1591
20:00.0 0c03: 1033:0194 (rev 03) (prog-if 30)
Subsystem: 10cf:1591
Flags: fast devsel, IRQ 19
Memory at f2200000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [50] Power Management version 3
Capabilities: [70] Message Signalled Interrupts: Mask- 64bit+ Queue=0/3
Enable-
Capabilities: [90] MSI-X: Enable- Mask- TabSize=8
Capabilities: [a0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting <?>
Capabilities: [140] Device Serial Number ff-ff-ff-ff-ff-ff-ff-ff
Capabilities: [150] #18
Kernel modules: xhci
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Cannot suspend with a USB3 port (HP8540w)
https://bugs.launchpad.net/bugs/562484
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