On Mon, 22 Nov 2010, Robert Pearce wrote: > After a reboot (which this machine doesn't get very often... unless I > have a power outage like last week) I get: > > zechariah ~ # lsusb -v > Bus 001 Device 003: ID 0403:8cb0 Future Technology Devices International, Ltd > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 2.00 > bDeviceClass 0 (Defined at Interface level) > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize0 64 > idVendor 0x0403 Future Technology Devices International, Ltd > idProduct 0x8cb0 > bcdDevice 8.00 > iManufacturer 1 Oxford Vacuum Science > iProduct 2 PicoSphere > iSerial 3 PS09A001 > bNumConfigurations 1 ... > Bus 001 Device 002: ID 10df:0500 In-Win Development, Inc. iAPP CR-e500 Card reader > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 2.00 > bDeviceClass 0 (Defined at Interface level) > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize0 64 > idVendor 0x10df In-Win Development, Inc. > idProduct 0x0500 iAPP CR-e500 Card reader > bcdDevice 0.96 > iManufacturer 1 IN-WIN > iProduct 2 iAPP CR-e500 > iSerial 3 0000000001B9 > bNumConfigurations 1 ... > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 2.00 > bDeviceClass 9 Hub > bDeviceSubClass 0 Unused > bDeviceProtocol 0 Full speed (or root) hub > bMaxPacketSize0 64 > idVendor 0x1d6b Linux Foundation > idProduct 0x0002 2.0 root hub > bcdDevice 2.06 > iManufacturer 3 Linux 2.6.35.3ovs ehci_hcd > iProduct 2 EHCI Host Controller > iSerial 1 0000:00:10.3 > bNumConfigurations 1 ... So yes, everything is back to normal, running at high speed again. > > It's possible that the EHCI controller on this machine simply isn't > > working properly any more. > > > > Interesting... last night (no reboot since the previous problem, so not using EHCI?) the link remained up for nine hours without a glitch. So you may be right. I'll draft in another PC (a more representative Intel Atom Mini-ITX) and see if that can keep talking at full speed. Maybe after being up for so long, the EHCI hardware just glitched and caused the disconnect. Has this happened repeatedly? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
