Putty Fatal Error Unable To Open Serial Port Ubuntu
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ValidatorToolboxDNS Lookup Toolhtdigest Generator Tool Onlinehtpasswd Generator Tool OnlineHTTP Headers Lookup ToolMD5 Encryption ToolOpen Port Check ToolSHA-1 Encryption ToolURL Encoding/Decoding ToolAbout MeContact MeSitemap Home › Linux › Fix serial port permission denied errors on LinuxFix serial port permission denied errors on LinuxApril 8, 2013 putty unable to open serial port ubuntu Linux Jesin A 25 CommentsThe ancient serial port which is no putty unable to open serial port windows 7 longer found on the latest motherboards and even the not so latest laptops is still used for connecting cannot open /dev/ttyusb0 permission denied to the console of networking devices, headless computers and a lot other applications. On computers which do not have built-in serial ports USB-to-Serial adapters can be used. Linux identifies
Cannot Open /dev/ttys0 Permission Denied
inbuilt serial ports as /dev/ttyS0, /dev/ttyS1,….. /dev/ttySn and USB-to-Serial adapters as /dev/ttyUSB0, …. /dev/ttyUSBn and they can be accessed using terminal emulator applications like PuTTY, minicom and screen.Normally when the serial console is accessed using the terminal emulator of your choice as a non-root user you'll get a "permission denied" error. Using PuTTY on Ubuntu I got the putty unable to open serial port linux following error - "Unable to open connection to: Unable to open serial port". PuTTY on Linux throws this error if the user running it does not have permissions to access the serial port device fileThis is because the device file of the serial port does not have permissions to allow to currently logged in user to "read" or "write" to the serial device. The following command will confirm that.jesin@localhost:~$ ls -l /dev/ttyUSB* crw-rw---- 1 root dialout 188, 0 Apr 8 21:54 /dev/ttyUSB0 crw-rw---- 1 root dialout 188, 1 Apr 8 21:54 /dev/ttyUSB1So we can see that only the "root" user and the "dialout" group have proper permissions, while chmod can be used to grant access to the required user or everyone it is messy and not a secure way. The easier way is the add the user to the dialout group.First verify if the user does belong to the dialout group using the "id" command.jesin@localhost:~$ id -Gn jesin jesin adm cdrom sudo dip plugdev lpadmin sambashare kvmNext add the user to
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Could Not Open Port /dev/ttyusb0: [errno 13] Permission Denied: '/dev/ttyusb0'
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Putty Error Unable To Open Connection To Com3
Anybody can answer The best answers are voted up and rise to the top Serial port terminal > Cannot open /dev/ttyS0: Permission denied up vote 7 down vote favorite 3 I had Windows XP on this box and it failed. Thinking it http://websistent.com/fix-serial-port-permission-denied-errors-linux/ 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. 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 http://askubuntu.com/questions/210177/serial-port-terminal-cannot-open-dev-ttys0-permission-denied 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.: 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. Any ideas? serial-port share|improve this question edited Aug 26 '13 at 3:33 Braiam 39.2k1693154 asked Oct 31 '12 at 18:03 Joe Reynolds 36112 add a comment| 3 Answers 3 active oldest votes up vote 15 down vote 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: groups ${USER} ..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: sudo gpasswd --add ${USER} dialout You then need to log out and log back in again for it to be effective. Then see if it fixes your problem. share|improve this answer edited Aug 22 '13 at 15:29 Lucas 252212 answered Oct 31 '12 at 19:48 Colin Ian King 7,4562133 add a comment| up vote 2 down vote Had a look around various forums and it looks to be
Assigned to Milestone gtkterm (Ubuntu) Edit Confirmed Undecided Unassigned Edit You need to log in to change this bug's status. Affecting: gtkterm (Ubuntu) https://bugs.launchpad.net/bugs/949597 Filed here by: jmr13031@gmail.com When: 2012-03-08 Confirmed: 2012-04-20 Target Distribution Baltix BOSS Juju Charms Collection Elbuntu Guadalinex Guadalinex Edu Kiwi Linux nUbuntu PLD Linux Tilix tuXlab Ubuntu Ubuntu http://comphelp.org/guide/putty-fatal-error-unable-to-open-serial-port/ Linaro Evaluation Build Ubuntu RTM Package (Find…) Project (Find…) Status Importance Confirmed Undecided Assigned to Nobody Me Comment on this change (optional) Email me about changes to this unable to bug report Also affects project (?) Also affects distribution/package Nominate for series Bug Description OS: Ubuntu 12.04 LTS Beta 64 bit 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 unable to open open a shell and type "sudo gtkterm" to get it to work. See original description Add tags Tag help Whoopie (whoopie79) wrote on 2012-03-28: #1 Please check if you're are member of the dialout group. If not -> "sudo adduser YOUR_USER dialout" on the console Launchpad Janitor (janitor) wrote on 2012-04-20: #2 Status changed to 'Confirmed' because the bug affects multiple users. Changed in gtkterm (Ubuntu): status: New → Confirmed Tom (trsaunders) wrote on 2012-04-20: #3 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. fatih yucesoy (fyucesoy) on 2012-04-25 description: updated Wade Matthews (sungreentree) wrote on 2012-06-22: #4 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. A
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