I insulate the problem. Now I read man to understand... It's a bad conversion I modified eaglectrl.c to show the bug eaglectrl -w display this messages
Sending options to device /proc/bus/usb/001/003 1-strtol (7fffffff)x 1-value (80020066)x 1-strtol (0)d 1-strtol (0)x ... # extract of my eagle-usb.conf # #POTS FOR EAGLE OPTN0=80020066 OPTN4=00000000 value (unsigned int) is between 0 and UINT32_MAX. strtol overflow and return LONG_MAX (= UINT32_MAX / 2 with 32bits and 64bits). So we must replace strtol by strtoll. To Baud. With bugged eaglectrl, I observed leds blinking. mcoolive.
