On Tue, 20 Jan 2009, Wim de Vries wrote: > Hi, > I am trying to connect an USB device to my asus eee pc. > The device connects OK on my HP compaq 6910p with Suse 10.3: > dmesg: > usb 7-1: new full speed USB device using uhci_hcd and address 4 > usb 7-1: new device found, idVendor=04d8, idProduct=000a > usb 7-1: new device strings: Mfr=1, Product=2, SerialNumber=3 > usb 7-1: Product: PIC18 USB CDC > usb 7-1: Manufacturer: Microchip > usb 7-1: SerialNumber: V1.1FS > usb 7-1: configuration #1 chosen from 1 choice > drivers/usb/class/cdc-acm.c: This device cannot do calls on its own. It > is no; modem. > cdc_acm 7-1:1.0: ttyACM0: USB ACM device > > So it should ánd can use cdc-acm. > > Nevertheless, on the asus (kernel version: 2.6.26-1-686, Debian,KDE): > > dmesg: ... > [ 351.576075] usb 2-2: new full speed USB device using uhci_hcd and > address 41 > [ 351.729542] usb 2-2: unable to read config index 0 descriptor/all > [ 351.729542] usb 2-2: can't read configurations, error -71 > [ 351.784099] hub 2-0:1.0: unable to enumerate USB device on port 2 > [ 352.816067] usb 2-2: new full speed USB device using uhci_hcd and > address 43 > [ 352.872105] hub 2-0:1.0: unable to enumerate USB device on port 2 > [ 354.056173] usb 2-2: new full speed USB device using uhci_hcd and > address 44 > [ 354.198756] usb 2-2: device descriptor read/all, error -71 > [ 354.256102] hub 2-0:1.0: unable to enumerate USB device on port 2 ... This is a hardware problem, not a software issue. You've got a bad USB connection. 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
