Hej Giles, I made some tests with the dtyU0 device to see if it works. Here are the results: wiesel# ktrace gpsbabel -i garmin -w -f /dev/dtyU0 -o gpx -F myfile.gpx [ERROR] GPS_Packet_Read: Timeout. No data received. GARMIN:Can't init /dev/dtyU0 kdump ... 328 1 gpsbabel CALL break(0x815a000) 328 1 gpsbabel RET break 0 328 1 gpsbabel CALL open(0xbfbfeb1d,2,0x30) 328 1 gpsbabel NAMI "/dev/dtyU0" 328 1 gpsbabel RET open 3 328 1 gpsbabel CALL ioctl(3,TIOCGETA,0x8159004) 328 1 gpsbabel GIO fd 3 read 44 bytes "\^B+0円0円\a0円0円0円0円K0円0円\M-K\^E0円0円\^D\M^?\M^?\^?\^W\^U\^R\M^?\^C\^\\^Z\ \^Y\^Q\^S\^V\^O\^A0円\^T\M^?0円0円0円0円\M^@%0円0円" 328 1 gpsbabel RET ioctl 0 328 1 gpsbabel CALL ioctl(3,TIOCSETA,0xbfbfe880) 328 1 gpsbabel GIO fd 3 wrote 44 bytes "0円0円0円0円0円0円0円0円0円\M-K0円0円0円0円0円0円\^D\M^?\M^?\^?\^W\^U\^R\M^?\^C\^\\^Z\ \^Y\^Q\^S\^V\^O\^A0円\^T\M^?\M^@%0円0円\M^@%0円0円" 328 1 gpsbabel RET ioctl 0 328 1 gpsbabel CALL ioctl(3,TIOCFLUSH,0xbfbfe8b0) 328 1 gpsbabel GIO fd 3 wrote 4 bytes "\^C0円0円0円" 328 1 gpsbabel RET ioctl 0 328 1 gpsbabel CALL break(0x815b000) 328 1 gpsbabel RET break 0 328 1 gpsbabel CALL write(3,0x8157150,3) 328 1 gpsbabel GIO fd 3 wrote 3 bytes "\^P\M-~0円" 328 1 gpsbabel RET write 3 328 1 gpsbabel CALL write(3,0x815a000,0) 328 1 gpsbabel GIO fd 3 wrote 0 bytes "" 328 1 gpsbabel RET write 0 328 1 gpsbabel CALL write(3,0x8157158,3) 328 1 gpsbabel GIO fd 3 wrote 3 bytes "\^B\^P\^C" 328 1 gpsbabel RET write 3 ... 328 1 gpsbabel CALL gettimeofday(0xbfbfe848,0) 328 1 gpsbabel RET gettimeofday 0 328 1 gpsbabel CALL write(2,0x80db24c,8) 328 1 gpsbabel GIO fd 2 wrote 8 bytes "[ERROR] " 328 1 gpsbabel RET write 8 328 1 gpsbabel CALL write(2,0xbfbfe094,0x2c) 328 1 gpsbabel GIO fd 2 wrote 44 bytes "GPS_Packet_Read: Timeout. No data received." 328 1 gpsbabel RET write 44/0x2c 328 1 gpsbabel CALL write(2,0x8106f7b,1) 328 1 gpsbabel GIO fd 2 wrote 1 bytes " " 328 1 gpsbabel RET write 1 328 1 gpsbabel CALL write(2,0xbfbfe144,0x1d) 328 1 gpsbabel GIO fd 2 wrote 29 bytes "GARMIN:Can't init /dev/dtyU0 " 328 1 gpsbabel RET write 29/0x1d 328 1 gpsbabel CALL exit(1) if I am using /dev/ttyU0 the output looks like yours: kdump ... 1372 1 gpsbabel CALL break(0x8159000) 1372 1 gpsbabel RET break 0 1372 1 gpsbabel CALL break(0x815a000) 1372 1 gpsbabel RET break 0 1372 1 gpsbabel CALL open(0xbfbfeb1d,2,0x30) 1372 1 gpsbabel NAMI "/dev/ttyU0" 1372 1 gpsbabel RET open -1 errno 4 Interrupted system call Uli
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