On Sun, 30 Jan 2005, Malcolm Apps wrote:

> I'm at a complete loss here.
> 
> I'm running Fedora 2.6.9-1.681_FC3
> 
> 
> Sequence of events:
> 
> Installed an nVidia graphics card, everything was lovely, all USB
> devices working fine (HP Deskjet 6540d, Epson Perfection 1670 scanner,
> Belkin smartcard read and Nokia nGage).
> 
> 2 weeks later, removed nVidia graphics card, rebooted.
> 
> Kudzu appeared to report the loss of the graphics card
> and allow me to configure the old m./board graphics.
> 
> Kudzu core dumped.
> 
> System continued to boot.
> 
> No usb devices accessible.
> 
> 
> /proc/bus/usb is empty
> /proc/sys/kernel/hotplug contains /sbin/hotplug
> 
> 
> References to usb from /var/log/dmesg:
> 
>         usbcore: registered new driver usbfs
>         usbcore: registered new driver hub
>         usbcore: registered new driver hiddev
>         usbcore: registered new driver usbhid
>         drivers/usb/input/hid-core.c: v2.0:USB HID core driver
> 
> 
> Bits from /var/log/messages that seem relevant:
>         usbcore: registered new driver usbfs
>         usbcore: registered new driver hub
>         PCI: Using IRQ router SIS [1039/0018] at 0000:00:01.0
>         usbcore: registered new driver hiddev
>         usbcore: registered new driver usbhid
>         drivers/usb/input/hid-core.c: v2.0:USB HID core driver
>         PCI: Found IRQ 5 for device 0000:00:01.1
>         PCI: Found IRQ 10 for device 0000:00:01.4
>         PCI: Found IRQ 11 for device 0000:00:01.2
>         PCI: Sharing IRQ 11 with 0000:00:01.3
>         ohci_hcd 0000:00:01.2: OHCI Host Controller
>         ohci_hcd 0000:00:01.2: irq 11, pci mem 1187e000
>         ohci_hcd 0000:00:01.2: new USB bus registered, assigned bus
>         number 1
>         PCI: Found IRQ 11 for device 0000:00:01.3
>         PCI: Sharing IRQ 11 with 0000:00:01.2
>         ohci_hcd 0000:00:01.3: OHCI Host Controller
>         ohci_hcd 0000:00:01.3: irq 11, pci mem 118a8000
>         ohci_hcd 0000:00:01.3: new USB bus registered, assigned bus
>         number 2
>         usb 1-2: new full speed USB device using address 2
>         drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev
>         2 if 0 alt 0 proto 2 vid 0x03F0 pid 0x8204
>         usbcore: registered new driver usblp
>         drivers/usb/class/usblp.c: v0.13: USB Printer Device Class
>         driver
>         usb 1-3: new full speed USB device using address 3
>         usb 1-3.3: new full speed USB device using address 4
>         ohci_hcd 0000:00:01.2: remove, state 1
>         usb usb1: USB disconnect, address 1
>         usb 1-2: USB disconnect, address 2
>         drivers/usb/class/usblp.c: usblp0: removed
>         usb 1-3: USB disconnect, address 3
>         usb 1-3.3: USB disconnect, address 4
>         ohci_hcd 0000:00:01.2: USB bus 1 deregistered
>         ohci_hcd 0000:00:01.3: remove, state 1
>         usb usb2: USB disconnect, address 1
>         ohci_hcd 0000:00:01.3: USB bus 2 deregistered
> 
> 
> Nothing happens between:
>         usb 1-3.3: new full speed USB device using address 4
> and 
>         ohci_hcd 0000:00:01.2: remove, state 1
> 
> 
> 
> Can anyone point me in the right direction?

It sure looks like something has done "rmmod ohci-hcd".  That would have 
had to happen during the time interval when you say that nothing happened, 
but that's what the log indicates...

Alan Stern



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