It is not enough to add the user to dialout. You also have to sudo apt-get
remove modemmanager
Check this:
http://askubuntu.com/questions/133235/how-do-i-allow-non-root-access-to-ttyusb0-on-12-04
and this: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/662881
I'm using ubuntu 13.04 by the
Simply adding yourself to the dialout group and opening up another
terminal window will not suffice. One quick test is
add yourself to the group as described above
# sudo adduser youracct dialout
$ su - youracct
$ minicom -D /dev/ttyUSB0
If this works, just close your desktop or login
I get the following errors using efax-gtk
Socket running on port 9900
efax-0.9a: 01:37:33 failed page /home/roger/Documents/Libre Office/Saddleback
Labs Request.pdf.001
efax-0.9a: 01:37:33 finished - unrecoverable error
efax-0.9a: 01:37:33 Error: can't open serial
It works, but you have to change permission to the groups. Here the full
commands:
sudo adduser MyUser dialout
sudo chmod a+rw /dev/ttyUSB0
Next boot USB0 retained these permissions:
crw-rw 1 root dialout 188, 0 Jul 6 10:29 /dev/ttyUSB0
and so it is possible to run minicom from MyUser.
Same with Ubuntu 12.04 LTS 64 bit and minicom.
I have to use sudo minicom to connect to it.
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https://bugs.launchpad.net/bugs/949597
Title:
Cannot open /dev/ttyUSB0: Permission denied
Same: Last week I switched to Ubuntu 12.04 LTS 64 bit. Now my user
can't access the serial ports. It affects not just gtkterm but other
serial port programs as well. I didn't see this in prior Ubuntu
versions. Adding my user to the dialout group made no difference. For
now, I am running sudo
** Description changed:
OS: Ubuntu 12.04 LTS Beta 64 bit
- Program gtkterm
+ Program gtkterm
Version 3.3.0
Expected: Under Ubuntu 11.10 I could just run gtkterm and select the /dev
device as a standard user.
Probelm : Gtkterm is not able to open the /dev devices. You have to open a
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gtkterm (Ubuntu)
Status: New = Confirmed
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Title:
I am having the same problem. Adding my user to dialout did not help. Of
course I can create a udev rule for the device, but I didn't need to do
this in previous versions of Ubuntu.
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Please check if you're are member of the dialout group. If not - sudo
adduser YOUR_USER dialout on the console
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Title:
Cannot open /dev/ttyUSB0:
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