Hi, Recently I upgraded the kernel on my RedHat 7.1 system to version 2.4.16 so I could begin testing the Umax1220u driver under that kernel (using the sanei_usb interface).
However, I seem to have run into an unexpected problem. Whenever I try to access /dev/usb/scanner0 (or /dev/usbscanner) it freezes my entire system. At first I thought my driver was misbehaving, but apparently even if I do a tail on the device file, it is enough to freeze the system: bash:# /sbin/modprobe uhci # Have this set up as a module bash# tail /dev/usb/scanner2 # I only have one scanner... tail: /dev/usb/scanner1: No such device # ...ok, this is expected. bash# tail /dev/usb/scanner0 # This *completely* freezes the machine In my old kernel (2.4.2) this was never a problem. Any ideas what might be going on? How can I turn on debugging and get some more meaningful information about this? Marcio Luis Teixeira
