- Linux Serial Terminal Program
- Ubuntu Serial Terminal Screen
- Ubuntu Open Serial Port
- Serial Terminal Getty Ubuntu 18.04
Active19 days ago
Nov 05, 2018 You are using a serial (null modem) cable. It is also possible to use a USB to Serial adaptor, but the tty. must be changed to reflect your hardware. You have an available serial console on ttyS0. If your not getting any output, a real serial port or other device might be. In this article, you will learn how you can use your Ubuntu Linux machine to open a serial console on a cisco device. Privileged access to your Ubuntu machine; A serial cable; Conventions # - requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command. Install Ubuntu 14.04/16.04 Debian 7/8/9 with USB stick and serial console This default install CD images cannot be used to install a server that does not have a VGA display. Many new embedded systems only have a serial console that can be used for installation.
I had Windows XP on this box and it failed. Thinking it was corrupted OS I tried to reinstall, and it failed. But then I tried to install Ubuntu, and I could not run it from the USB or from the HD.
Did the mem test and found out one of my 512MB sticks (had 2) failed. I removed the bad one and was able to install Ubuntu but it was sluggish.
There are two other articles on a serial port adapter for Windows. Below is the instructions for Linux and how to connect your serial adapter while using Linux. This should work for most people using Linux and a serial adapter or usb to rs232 driver which is being discussed. Jul 05, 2019 10 Best Linux Terminal Emulators For Ubuntu And Fedora. 10 Best Linux Terminal Emulators For Ubuntu And Fedora. By Sohail Last updated Jul 5, 2019 0. One of the most important applications for Linux users is the terminal emulator. It allows every user to get access to the shell. It’s available for Ubuntu and Fedora, but if you. Cannot open /dev/ttyS0: Permission denied I would like to be able to use serial port terminal, or equivalent with Xubuntu so I can use my kpc3 packet terminal, connect to the com port on the back of my computer.
I was trying to quickly setup my packet radio for Hurricane Sandy. Downloaded the Serial Port Terminal and was able to get some use but the system kept locking up. So Installed Xubuntu next to it, planning on running out the next day to get RAM for the box. Put Xubuntu on and now I am getting the following error with serial port terminal.:
I would like to be able to use serial port terminal, or equivalent with Xubuntu so I can use my kpc3 packet terminal, connect to the com port on the back of my computer.
Any ideas?
Braiam54.5k2121 gold badges146146 silver badges230230 bronze badges
Joe ReynoldsJoe Reynolds
8 Answers
The tty devices belong to the 'dialout' group, I suspect you are not a member of this group and hence are denied access to /dev/ttyS0, so you need to add yourself to that group.
First check if you are a member of that group:
.this will list all the groups you belong to. If you don't belong to the dialout grup then add yourself to it, for example:
You then need to log out and log back in again for it to be effective. Then see if it fixes your problem.
Colin Ian KingColin Ian King13.4k11 gold badge4242 silver badges5050 bronze badges
The only solution that works for me is to: (every time I boot the machine)
It really needs to be fixed at time of installation. I'm on 15.10 and have tried 16.04 LTS, still the same there. Seems like such a simple fix.
The older versions 10.04LTS did not have this problem.
user323419
DRJ101DRJ101
You can just use this command:
This will add the current user to the dialout group.Login and out it to take effect.
BonnomBonnom
Had a look around various forums and it looks to be a bug related to permissions. Here's how I got around the problem (long version). You WILL need BOTH
cu
and setserial
packages installed.In three terminal tabs, monitored output from
# tail -f /var/log/messages
That's how we know if we have a /dev/ttyUSB0
or not.In the second tab, simply ran a loop to
ls -l
this device to see it's permissions and it's group ID is 'dialout'. THIS is the critical bit. For some reason, your user MUST use this GID to do the cu
, so..In the third tab, as root, did
Braiam# newgrp dialout
(to correspond with the GID of dialout). Tested with # touch /tmp/anything
.. doing ls -l
on this file shows it is created by root with a dialout group, so we're ready to .. # cu -l /dev/ttyUSB0
In my case I needed to hit return again to see the expected prompt, in other cases speed may need to be specified.54.5k2121 gold badges146146 silver badges230230 bronze badges
linuxhelpielinuxhelpie
On Ubuntu 18.04, I fixed this issue with the following commands:
And after this, reboot.
If you still have issues, try to debug with:
And look for 'denied' in the strace. Repair windows installer windows 10.
TsehoTseho
In my case the problem still exist, even when I add my user to group using:
So when I use :
and when I type:
groups
I got this result: But when I type
id -Gn ilyahoo
the putput is: I know that there is a problem that I don't know what is it honestly.
To get a solution I just typed
and the problem was fixed.
ilyahooilyahoo
Linux Serial Terminal Program
Here is the solution:
I had just updated my operating system to Ubuntu 18. normally I would install arduino IDE through the Arduino web sight because the one provided via Ubuntu Software portal was always an older version, and I wanted the newest features and board support. However, since I just installed the newest operating system, I figured that the official software center from ubuntu would have the newest version of the IDE listed, and it did.
Now to the juicy part! Both my laptop and my desktop had the same problems accessing the serial ports. i had done the make user part of the dial-up group, and set permissions for the serial port, but always had to log out then back in, do it all again every time i rebooted! NOT FUN!.
This time, it didn't work. Even in the software center the permissions option for the software shows the serial port 'disconnected'. no option to allow permission to the port even after all the permissions were granted manually through the terminal window using sudo.
I decided to uninstall the Arduino IDE from the software center, and install it from the web sight, so i did. This time I read the install files, just to see if it mentions permissions for the serial port or not, *****of course it did! ******all the ports are set with full access permissions, user access across the board. Turns out this was the answer. after running the arduino-linux-setup.sh file provided by arduino, all serial port problems were solved. the following is an excerpt from the
arduino-linux-setup.sh
file;so you see even the KERNEL is effected. My suggestion:
install from the arduino ide web site. ignore the software center at this time, until it is repaired. Yes the SOFTWARE CENTER is not allowing permmisions to the serial port during install, and forever after.
Problem Solved!
abu_bua5,02488 gold badges1919 silver badges3737 bronze badges
Joseph WimsattJoseph Wimsatt
The answer is simple. You need to add your user to two groups to have access to the usb ports. These groups are
dialout
and tty
:Ubuntu Serial Terminal Screen
Replace
<user>
with the actual username in those commands.Ubuntu Open Serial Port
Eliah Kagan91k2323 gold badges251251 silver badges398398 bronze badges
soham shailesh ranadesoham shailesh ranade