WANTED: User-friendly way to assign owner/permission when attaching a new serial devices (USB, BT, etc)

Asked Apr 15 '19 at 16:27

Active Apr 15 '19 at 16:50

Viewed 71 times

When attaching a serial device (e.g an arduino via USB or Bluetooth), the owner:group is set as root:dialout, e.g:

crw-rw---- 1 root dialout 166, 0 Apr 15 18:08 /dev/ttyACM0

However, even when the regular user is part of the dialout group, it is necessary to change permissions on the device file (to 666).

This is only temporary until the device has been disconnected. A persistent solution is to modify the udev file. See e.g. this link and this link

This can be confusing, not least when the Bluetooth system tool (blueDevil on KDE) can detect USB devices, but not connect to them.

It seems to me, that either the default behaviour should be to grant dialout users write access or at the least this should be part of the GUI system setting tools.

$id
uid=1000(soon) gid=1000(soon) groups=1000(soon),4(adm),20(dialout),24(cdrom),27(sudo),30(dip),46(plugdev),116(lpadmin),126(sambashare)

edited Apr 15 '19 at 16:50

asked Apr 15 '19 at 16:27

Søren ONeill

1

Group members have write permission. The permissions is rw for owner and rw for group. – vidarlo Apr 15 '19 at 16:32
That's true ... the issue basically remains the same however: the user can not access the device, but root can. Now I can't really see why.... – Søren ONeill Apr 15 '19 at 16:42
[Edit] your question to include the output of id – vidarlo Apr 15 '19 at 16:45
Done! I've added id above – Søren ONeill Apr 15 '19 at 17:57

WANTED: User-friendly way to assign owner/permission when attaching a new serial devices (USB, BT, etc)

0 Answers0