Hi,
On Saturday, 16 September 2006 00:13, Rafael J. Wysocki wrote:
> It looks like the ohci_hcd driver sometimes has problems with the
> initialization (eg. USB mouse doesn't work after a fresh boot and reloading
> of the driver helps).
>
> I have observed this on two different x86_64 boxes (HPC 6325, Asus L5D),
> but it is not readily reproducible. Anyway I've got a dmesg output from a
> failing case which is attached.
Actually, the problem is ohci_hcd doesn't seem to recognize devices plugged
into the USB ports.
For example, if I unplug and replug a mouse (that worked before unplugging),
it doesn't work any more. I have to reload ohci_hcd to make it work again.
This is 100% reproducible and occurs on the two boxes above.
Appended in a snippet from a dmesg output that I think is relevant to this
issue. It covers the unplugging and replugging of a USB mouse (there are no
more USB-related messages in the dmesg).
Greetings,
Rafael
hub 3-0:1.0: state 7 ports 4 chg 0000 evt 0010
ohci_hcd 0000:00:13.1: GetStatus roothub.portstatus [3] = 0x00030100 PESC CSC PPS
hub 3-0:1.0: port 4, status 0100, change 0003, 12 Mb/s
usb 3-4: USB disconnect, address 2
usb 3-4: unregistering device
usb 3-4: usb_disable_device nuking all URBs
ohci_hcd 0000:00:13.1: shutdown urb ffff81002f77d4b8 pipe 40408280 ep1in-intr
usb 3-4: unregistering interface 3-4:1.0
PM: Removing info for No Bus:usbdev3.2_ep81
usbdev3.2_ep81: ep_device_release called for usbdev3.2_ep81
PM: Removing info for usb:3-4:1.0
usb 3-4:1.0: uevent
PM: Removing info for No Bus:usbdev3.2
PM: Removing info for No Bus:usbdev3.2_ep00
usbdev3.2_ep00: ep_device_release called for usbdev3.2_ep00
PM: Removing info for usb:3-4
usb 3-4: uevent
hub 3-0:1.0: debounce: port 4: total 100ms stable 100ms status 0x100
hub 1-0:1.0: state 7 ports 8 chg 0000 evt 0100
ehci_hcd 0000:00:13.2: GetStatus port 8 status 001403 POWER sig=k CSC CONNECT
hub 1-0:1.0: port 8, status 0501, change 0001, 480 Mb/s
hub 1-0:1.0: debounce: port 8: total 100ms stable 100ms status 0x501
ehci_hcd 0000:00:13.2: port 8 low speed --> companion
ehci_hcd 0000:00:13.2: GetStatus port 8 status 003002 POWER OWNER sig=se0 CSC
--
You never change things by fighting the existing reality.
R. Buckminster Fuller
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