Comment # 6 on bug 1161232 from Jiri Slaby

Oliver, any idea why this happens?

> usb usb1: root hub lost power or was reset
> usb usb2: root hub lost power or was reset
> ACPI: EC: event unblocked
> usb usb3: root hub lost power or was reset
> usb usb4: root hub lost power or was reset
> xhci_hcd 0000:3c:00.0: Host halt failed, -19
> xhci_hcd 0000:3c:00.0: Host not accessible, reset failed.
> usb usb5: root hub lost power or was reset
> usb usb6: root hub lost power or was reset
> xhci_hcd 0000:3d:00.0: Host halt failed, -19
> usb usb7: root hub lost power or was reset
> usb usb8: root hub lost power or was reset
> xhci_hcd 0000:3d:00.0: Host not accessible, reset failed.
> xhci_hcd 0000:3e:00.0: Host halt failed, -19
> xhci_hcd 0000:3e:00.0: Host not accessible, reset failed.
> xhci_hcd 0000:3c:00.0: No Extended Capability registers, unable to set up roothub
> xhci_hcd 0000:3c:00.0: Host halt failed, -19
> xhci_hcd 0000:3c:00.0: Host not accessible, reset failed.
> xhci_hcd 0000:3c:00.0: PCI post-resume error -12!
> xhci_hcd 0000:3c:00.0: HC died; cleaning up
> PM: dpm_run_callback(): pci_pm_restore+0x0/0x90 returns -12
> PM: Device 0000:3c:00.0 failed to restore async: error -12
> xhci_hcd 0000:3d:00.0: No Extended Capability registers, unable to set up roothub
> xhci_hcd 0000:3d:00.0: Host halt failed, -19
> xhci_hcd 0000:3d:00.0: Host not accessible, reset failed.
> xhci_hcd 0000:3d:00.0: PCI post-resume error -12!
> xhci_hcd 0000:3d:00.0: HC died; cleaning up
> xhci_hcd 0000:3e:00.0: No Extended Capability registers, unable to set up roothub
> PM: dpm_run_callback(): pci_pm_restore+0x0/0x90 returns -12
> PM: Device 0000:3d:00.0 failed to restore async: error -12
> xhci_hcd 0000:3e:00.0: Host halt failed, -19
> xhci_hcd 0000:3e:00.0: Host not accessible, reset failed.
> xhci_hcd 0000:3e:00.0: PCI post-resume error -12!
> xhci_hcd 0000:3e:00.0: HC died; cleaning up
> PM: dpm_run_callback(): pci_pm_restore+0x0/0x90 returns -12
> PM: Device 0000:3e:00.0 failed to restore async: error -12
> PM: dpm_run_callback(): pci_pm_restore+0x0/0x90 returns -19
> PM: Device 0000:3f:00.0 failed to restore async: error -19