Hi, >>> Indeed doing "echo 'on' | sudo tee /sys/bus/pci/devices/*/power/control" >>> fixes the problem: When I subsequently plug in the disk, it is >>> recognized correctly. I confirmed this with an older kernel (the 3.16 >>> Debian kernel, to be more precise). That's good to know, now I don't >>> need to reboot to a different kernel anymore to do fast backups ;-) >> >> Is there any news on this? Any further information I can provide to help >> fix the issue? >> > > I got some untested and not yet reviewed usb3 resume race fixes from Zhuang Jin Can > If you can try them out and see if they help it would be great. > They are sitting in a topic branch called "xhci_usb3_pm_fixes" in my tree: > (5 extra patches on top of current usb-linus) > > git://git.kernel.org/pub/scm/linux/kernel/git/mnyman/xhci.git xhci_usb3_pm_fixes This is my production and (main and only) work machine. If you tell me testing that branch is safe and won't mess up my file systems or hardware, I can give it a try. Kind regards, Ralf > > If not, then the we need to change xhci resume code so that we resume the roothubs as default > except if we are runtime suspended and woken up just to be (system) suspended. > > -Mathias > > > > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html