On Mon, Nov 04, 2024 at 08:53:23PM -0800, Stephen Hemminger wrote: > On Fri, 25 Oct 2024 22:23:54 -0400 > Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > Nevertheless, even a malfunctioning device shouldn't provoke the > > kernel into a WARNING like you got. The underlying reason for it is > > not at all clear, particularly since you didn't enable usbcore dynamic > > debugging -- although that might not provide enough information either. > > > > One thing you could try doing is simply to replace that hub. > > > > Alan Stern > > Replaced the hub with a similar one which probably has same chip inside, > and the same problem happens. Which kernel cmdline parameter would enable > the debug you want. dyndbg="module usbcore =p" However, I'm far from certain that this will be very helpful. :-( Alan Stern
