Thank you Camaleón for your answer. I found the following suggestion to switch of the autosuspend option for usb devices somewhere: # modprobe usbcore autosuspend=-1
That's why I mentioned this module. It seems that this usbcore is something different than "ehci_hcd" and "uhci_hcd", at least in some conversations with similar topics "usbcore" and "ehci_hcd" appear both with "usbcore" having the autosuspend option. But I don't know. I did not find any information about possible options to ehci_hcd. Hah! Got it! While writing this I tried some more and now I've got my usb hubs back. Simply removed the modules and loaded them back again: # rmmod uhci_hcd # rmmod ehci_hcd # modprobe ehci_hcd # modprobe uhci_hcd (In fact I did it twice, because I read somewhere that the order matters, ehci_hcd should go first, and accidently I did it the other way around first, don't know if that matters.) So now, I know, how to get the usb hubs back again. What I still don't know is why they shut down in the first place. But I try to work that out a little later. There is still no power/autosuspend or power/level file under /sys/bus/usb/devices/... Thank you for pointing me in the right direction, Cheers, Gero. > -----Original Message----- > From: Camaleón [mailto:noela...@gmail.com] > Sent: Friday, 3 September 2010 2:19 PM > To: debian-user@lists.debian.org > Subject: Re: How to resume USB hubs > > On Fri, 03 Sep 2010 11:40:03 +0800, Gero Putzar wrote: > > (...) > > > Is there a way to reset the usb hubs or to reinitialise the > > corresponding kernel drivers or whatever deals with it? (I cannot > reboot > > the computer at the moment.) I tried: > > # modprobe usbcore > > FATAL: Module usbcore not found. > > (...) > > AFAIK, "ehci_hcd" and "uhci_hcd" are the kernel modules for USB stack. > > Greetings, > > -- > Camaleón > > > -- > To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org > with a subject of "unsubscribe". Trouble? Contact > listmas...@lists.debian.org > Archive: http://lists.debian.org/pan.2010.09.03.06.18...@gmail.com -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/000301cb4b42$6ad6fc30$4084f4...@com.au
