On Sun, Feb 23, 2014 at 09:09:53PM +0100, Emanuel Koczwara wrote: > Hi, > > W dniu 23.02.2014 18:58, Johan Hovold pisze: > > Perhaps the printer is sending some status bytes that we shouldn't > > pass to user space. Could you provide a log from when you send a > > command and get a response while running with debugging enabled? You > > can enable debugging with echo "module usbserial +p" > > >/sys/kernel/debug/dynamic_debug/control > > root@emanuel-laptop:/home/emanuel# echo "module usbserial +p" > > /sys/kernel/debug/dynamic_debug/control > bash: /sys/kernel/debug/dynamic_debug/control: No such file or directory > > How can I enable it? You might need to mount debugfs: mount -t debugfs none /sys/kernel/debug and make sure your kernel is compiled with CONFIG_DYNAMIC_DEBUG (and CONFIG_DEBUG_FS) enabled. Johan -- 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
