...e supported: int ioctl(int fd , LPTIME, int arg ) Sets the amount of time that the driver sleeps before rechecking the printer when the printer's buffer appears to be filled to …...ld This file contains the number of bits of entropy required for waking up processes that sleep waiting for entropy from /dev/random . The default is 64. write_wakeup_threshold …...ld This file contains the number of bits of entropy required for waking up processes that sleep waiting for entropy from /dev/random . The default is 64. write_wakeup_threshold …