Cannot Open Serial Port /dev/ttyusb0. Error Code 13
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smsware Member From: Szczecin, Poland Registered: 2012-08-14 Posts: 149 Website [SOLVED] How to set non-root access to serial ports? I have minicom: cannot open /dev/ttyusb0: permission denied this device which is listed as /dev/ttyUSB0I need tosudo chown sms
Cannot Open /dev/ttys0 Permission Denied
/dev/ttyUSB0every time I reboot. Normally I would think to add myself to some group but "tty" cannot access /dev/ttyusb0' no such file or directory group is not doing the trick... proof:[sms@sms-linux ~]$ groups sms tty wheel sms [sms@sms-linux ~]$ MinOZW Starting MinOZW with OpenZWave Version 1.0.758 2014-03-15 06:32:07.921 Cannot find a
/dev/ttyusb0 Permission Denied Arduino
path to the configuration files at ../../../config/, Using /usr/local/etc/openzwave/ instead... 2014-03-15 06:32:07.928 mgr, Added driver for controller /dev/ttyUSB0 2014-03-15 06:32:07.929 Opening controller /dev/ttyUSB0 2014-03-15 06:32:07.931 Trying to open serial port /dev/ttyUSB0 (attempt 1) 2014-03-15 06:32:07.933 ERROR: Cannot open serial port /dev/ttyUSB0. Error code 13 2014-03-15 06:32:07.935 ERROR: Failed to open serial port /dev/ttyUSB0 2014-03-15 minicom cannot open dev tty8 permission denied 06:32:07.936 WARNING: Failed to init the controller (attempt 0) ^C [sms@sms-linux ~]$ sudo MinOZW [sudo] password for root: Starting MinOZW with OpenZWave Version 1.0.758 2014-03-15 06:32:23.776 Cannot find a path to the configuration files at ../../../config/, Using /usr/local/etc/openzwave/ instead... 2014-03-15 06:32:23.782 mgr, Added driver for controller /dev/ttyUSB0 2014-03-15 06:32:23.784 Opening controller /dev/ttyUSB0 2014-03-15 06:32:23.786 Trying to open serial port /dev/ttyUSB0 (attempt 1) 2014-03-15 06:32:23.794 Serial port /dev/ttyUSB0 opened (attempt 1)Edit: yes, it was after logout and even reboot. Last edited by smsware (2014-03-15 15:07:15) Offline #2 2014-03-15 13:11:08 Pajaro Member Registered: 2004-04-21 Posts: 878 Re: [SOLVED] How to set non-root access to serial ports? check what permissions does it have Offline #3 2014-03-15 13:26:12 longcao Member Registered: 2013-10-28 Posts: 15 Re: [SOLVED] How to set non-root access to serial ports? IIRC, serial ports belong to group uucp in Arch Linux. Offline #4 2014-03-15 15:07:01 smsware Member From: Szczecin, Poland Registered: 2012-08-14 Posts: 149 Website Re: [SOLVED] How to set non-root acce
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Error: Cannot Access /dev/ttyusb0 Arduino
'/dev/ttyUSBx' on Ubuntu Print Go Down Pages: [1] Topic:
Ubuntu Serial Port Permission Denied
Error opening serial port '/dev/ttyUSBx' on Ubuntu(Read 51406 times) previous topic - next topic ubuntu add user to dialout group Helge Milde Newbie Posts: 3 Karma: 0[add] Arduino rocks Error opening serial port '/dev/ttyUSBx' on Ubuntu Dec 03, 2008, 03:42 pm Hi!I'm suddenly https://bbs.archlinux.org/viewtopic.php?id=178552 having problems uploading/communicating with my Arduino board via the Arduino Java IDE.. The strange thing is it happened after working for 2 days straight..I was editing a program, continously uploading and testing it, when I clicked the "Serial Monitor" button so I could debug (which had worked http://forum.arduino.cc/index.php?topic=49623.0 fine just minutes ago).First I get a lot of weird char's, like you'd get trying to Serial.print a non-alphanumeric byte (although it was an int) - then, after fiddeling with the Serial rate from the IDE (while the Arduino program was still running), I got an error.Ctrl+c, ./arduino and "Upload to I/O Board"... Still get an error.I've tried rebooting Ubuntu, reinstalling the software, removing all components and reprogrammed the Blink-example with my Windows machine (which worked - so I doubt the board is damaged).Below is the full error message. I'm 100% sure the usb-device is correct.processing.app.SerialException: Error opening serial port '/dev/ttyUSB0'. at processing.app.Serial.
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 Linux Jesin A 25 CommentsThe ancient serial port which is http://websistent.com/fix-serial-port-permission-denied-errors-linux/ no longer found on the latest motherboards and even the not so latest laptops is still used for connecting 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 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 permission denied 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 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 cannot access /dev/ttyusb0 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 the "dialout" supplementary group.jesin@localhost:~$ sudo usermod -a -G dialout