There seems to be something in addition to just the usb file access priverlages. When I changed them it changed the error message it did not resolve the problem as was expected. I used the following CHMOD command to change the access priverlages for the usb files chmod 666 /dev/bus/usb -R This gave me rw priverlages on the usb files for all users stephen@stephen-N150P:/$ sudo ls -l dev/bus/usb [sudo] password for stephen: total 0 drw-rw-rw- 2 root root 100 May 11 14:39 001 drw-rw-rw- 2 root root 80 May 14 03:18 002 drw-rw-rw- 2 root root 80 May 12 21:04 003 drw-rw-rw- 2 root root 60 May 11 14:39 004 drw-rw-rw- 2 root root 60 May 11 14:39 005 When I tried to use gebabbel or viking to download the tracks from the gps I got the error message "Found no Garmin USB devices." listing the usb devices does however show it is present. stephen@stephen-N150P:/$ lsusb Bus 001 Device 004: ID 0ac8:c33f Z-Star Microelectronics Corp. Webcam Bus 001 Device 003: ID 0781:5567 SanDisk Corp. Cruzer Blade Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 002: ID 0a5c:219c Broadcom Corp. Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 005: ID 091e:0003 Garmin International GPS (various models) Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Using gpsbabel on the command line without root privileges to download from the gps also generates the same error message. An strace of gpsbabel provided the following excerpt. openat(AT_FDCWD, "/dev/bus/usb", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 3 getdents(3, /* 7 entries */, 32768) = 168 close(3) = 0 openat(AT_FDCWD, "/dev/bus/usb", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 3 getdents(3, /* 7 entries */, 32768) = 168 getdents(3, /* 0 entries */, 32768) = 0 close(3) = 0 openat(AT_FDCWD, "/dev/bus/usb/005", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = -1 EACCES (Permission denied) write(2, "Found no Garmin USB devices.\n", 29Found no Garmin USB devices. ) = 29 exit_group(1) On Fri, May 13, 2016 at 7:47 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Fri, 13 May 2016, Stephen Furner wrote: > >> This is the permissions on the files for the USB being used by the Garmin >> >> stephen@stephen-N150P:/$ lsusb >> Bus 001 Device 004: ID 0ac8:c33f Z-Star Microelectronics Corp. Webcam >> Bus 001 Device 003: ID 0781:5567 SanDisk Corp. Cruzer Blade >> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub >> Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub >> Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub >> Bus 003 Device 002: ID 0a5c:219c Broadcom Corp. >> Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub >> Bus 002 Device 004: ID 091e:0003 Garmin International GPS (various models) >> Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub >> >> stephen@stephen-N150P:/$ ls -l dev/bus/usb/002 >> total 0 >> crw-rw-r-- 1 root root 189, 128 May 11 13:39 001 >> crw-rw-r-- 1 root root 189, 131 May 13 19:03 004 > > There it is: write permission only for root. Have you tried installing > the udev rule recommended on the Ubuntu forum? > > Alan Stern > -- 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
