root@darkstar:/proc/bus/usb/001 $ modprobe usb-uhci /lib/modules/2.4.29/kernel/drivers/usb/host/usb-uhci.o.gz: init_module: No such device /lib/modules/2.4.29/kernel/drivers/usb/host/usb-uhci.o.gz: Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters. You may find more information in syslog or the output from dmesg /lib/modules/2.4.29/kernel/drivers/usb/host/usb-uhci.o.gz: insmod /lib/modules/2.4.29/kernel/drivers/usb/host/usb-uhci.o.gz failed /lib/modules/2.4.29/kernel/drivers/usb/host/usb-uhci.o.gz: insmod usb-uhci failed merlin@darkstar:~/pics $ gphoto2 --list-files *** Error *** An error occurred in the io-library ('Bad parameters'): Could not find USB device (vendor 0x84e, product 0x1). Make sure this device is connected to the computer. *** Error (-2: 'Bad parameters') *** For debugging messages, please use the --debug option. Debugging messages may help finding a solution to your problem. If you intend to send any error or debug messages to the gphoto developer mailing list , please run gphoto2 as follows: env LANG=C gphoto2 --debug --list-files Please make sure there is sufficient quoting around the arguments.