When I try to connect my ER9XPro USB device to my Fedora 21 server, it fails to connect with:
[1024110.158374] usb 1-7: new full-speed USB device number 15 using xhci_hcd [1024110.312216] usb 1-7: device descriptor read/64, error -71 [1024110.565928] usb 1-7: device descriptor read/64, error -71 [1024110.819660] usb 1-7: new full-speed USB device number 16 using xhci_hcd [1024110.973497] usb 1-7: device descriptor read/64, error -71 [1024111.227212] usb 1-7: device descriptor read/64, error -71 [1024111.480928] usb 1-7: new full-speed USB device number 17 using xhci_hcd [1024111.482576] usb 1-7: Device not responding to setup address. [1024111.693836] usb 1-7: Device not responding to setup address. [1024111.894473] usb 1-7: device not accepting address 17, error -71 [1024112.047316] usb 1-7: new full-speed USB device number 18 using xhci_hcd [1024112.047415] usb 1-7: Device not responding to setup address. [1024112.298755] usb 1-7: Device not responding to setup address. [1024112.498815] usb 1-7: device not accepting address 18, error -71 [1024112.498836] usb usb1-port7: unable to enumerate USB device
It is a direct connection (no hub).
Any ideas?
Cheers and thanks, Stephen
On 29/03/15 16:29, Stephen Davies wrote:
When I try to connect my ER9XPro USB device to my Fedora 21 server, it fails to connect with:
[1024110.158374] usb 1-7: new full-speed USB device number 15 using xhci_hcd [1024110.312216] usb 1-7: device descriptor read/64, error -71 [1024110.565928] usb 1-7: device descriptor read/64, error -71 [1024110.819660] usb 1-7: new full-speed USB device number 16 using xhci_hcd [1024110.973497] usb 1-7: device descriptor read/64, error -71 [1024111.227212] usb 1-7: device descriptor read/64, error -71 [1024111.480928] usb 1-7: new full-speed USB device number 17 using xhci_hcd [1024111.482576] usb 1-7: Device not responding to setup address. [1024111.693836] usb 1-7: Device not responding to setup address. [1024111.894473] usb 1-7: device not accepting address 17, error -71 [1024112.047316] usb 1-7: new full-speed USB device number 18 using xhci_hcd [1024112.047415] usb 1-7: Device not responding to setup address. [1024112.298755] usb 1-7: Device not responding to setup address. [1024112.498815] usb 1-7: device not accepting address 18, error -71 [1024112.498836] usb usb1-port7: unable to enumerate USB device
It is a direct connection (no hub).
Any ideas?
Cheers and thanks, Stephen
I have just tried the same device and cable on a different F21 box and it worked perfectly.
What can be different between the two F21 boxes to produce these results?
(It is unlikely to be the USB port hardware on the failing box as that port with the same cable connects perfectly to other USB devices.)
Cheers and thanks, Stephen
On Mon, 30 Mar 2015 18:51:42 +1030 Stephen Davies wrote:
What can be different between the two F21 boxes to produce these results?
Perhaps the device draws more power than it really should and one of the computers is more picky about power requirements? If you have a powered hub you could try plugging it in via that hub.
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Stephen Davies -
Tom Horsley