On Sat, 11 Aug 2012, Laurent Bigonville wrote: > Hi, > > When connecting my UPS using its USB interface I get the following > error in dmesg: > > [ 2972.104523] usb 7-2: new low-speed USB device number 3 using uhci_hcd > [ 2973.012240] usb 7-2: New USB device found, idVendor=0463, idProduct=ffff > [ 2973.012245] usb 7-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 > [ 2973.012248] usb 7-2: Product: Ellipse MAX > [ 2973.012251] usb 7-2: Manufacturer: EATON > [ 2973.012253] usb 7-2: SerialNumber: ADFL3906T > [ 2986.177827] generic-usb 0003:0463:FFFF.0005: usb_submit_urb(ctrl) failed: -1 > [ 2986.177841] generic-usb 0003:0463:FFFF.0005: timeout initializing reports > [ 2986.178103] generic-usb 0003:0463:FFFF.0005: hiddev0,hidraw2: USB HID v1.10 Device [EATON Ellipse MAX] on usb-0000:00:1d.1-2/input0 > > You can notice that there is a bit more that 10s lag. This is causing > an issue at boot as the userspace driver fails to find the device > under /dev/bus/usb/ > > I'm using: > Linux fornost 3.4-trunk-amd64 #1 SMP Tue Jun 26 17:23:03 UTC 2012 x86_64 GNU/Linux > but I also had this issue with 3.0 and 3.2. This can also be reproduced > on an other machine (laptop) > > An idea? Try using usbmon to see what happens when the UPS is plugged in (instructions are in Documentation/usb/usbmon.txt). 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
