On Fri, 2011-03-11 at 12:26 -0700, Linuxguy123 wrote: > When I run the resulting HPP-22 program, it displays "HPP-22 is > disconnected." Ie its not finding the HPP-22 hardware connected to the > PC via a USB cable. > > dmesg states the following: > ====================================================== > [263071.342137] usb 6-1: new full speed USB device using uhci_hcd and > address 4 > [263071.514255] usb 6-1: New USB device found, idVendor=1e1a, > idProduct=001f > [263071.514266] usb 6-1: New USB device strings: Mfr=1, Product=2, > SerialNumber=3 > [263071.514273] usb 6-1: Product: HPP-22 > [263071.514278] usb 6-1: Manufacturer: HITECRCD Inc > [263071.514283] usb 6-1: SerialNumber: HPP-22-00000 > [263071.524680] generic-usb 0003:1E1A:001F.0005: hiddev97,hidraw2: USB > HID v0.01 Device [HITECRCD Inc HPP-22] on usb-0000:00:1d.1-1/input0 > ======================================================= > Does the dmesg display show what device name was assigned to the HPP-22 somewhere in the next few lines? That's normally logged after a USB device is plugged and recognised. It may be easier to spot if you run the command "sudo tail -f /var/log/messages" before you plug the device in - this should let you see all the HPP-22 related messages as that are logged. Use Ctrl-C to exit from tail when you're done with it. Martin