On Thu, Aug 17, 2023 at 10:22 PM Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > On Thu, Aug 17, 2023 at 10:07:37AM -0400, Alan Stern wrote: > > On Thu, Aug 17, 2023 at 05:33:05PM +0800, Kai-Heng Feng wrote: > > > HP ProOne 440 G10 AIO sometimes cannot suspend as xHCI wakes up the > > > system: > > > [ 445.814574] hub 2-0:1.0: hub_suspend > > > [ 445.814652] usb usb2: bus suspend, wakeup 0 > > > [ 445.824629] xhci_hcd 0000:00:14.0: Port change event, 1-11, id 11, portsc: 0x202a0 > > > > What is the meaning of the 0x202a0 bits? What caused this wakeup? > > And more to the point, given that the previous line says "wakeup 0", why > should any port change event cause a wakeup? I think the controller and roothub have to deal with the interrupt about disconnecting regardless of the remote wakeup setting. Kai-Heng > > Alan Stern
