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Old 10-12-2014, 01:31 PM   #1
davidsmith2k
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Exclamation usb permissions?


i am migrating from xp to linux mint 17 for my radio han software but when i try to connect to baofeng via usb i get permission denied???

would apprecite some help as linux is still a bit strange to me at the moment

tahnks
david
 
Old 10-12-2014, 01:46 PM   #2
yancek
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Generally, a normal user will have permissions to anything in the /home/user directory and not outside of it. With Mint, you should see the mount point for an external flash drive under /media/username. Check the permissions on it with: ls -ld /media/username. A little more info on how you are doing what you are doing would help.
 
Old 10-12-2014, 01:55 PM   #3
ferrari
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Assuming the device node appears as /dev/ttyUSB*, examine the output from the following

Code:
ls -l /dev/ttyUSB*
This should list the relevant group that you need to belong to.

For example, I have an in-buit 3G modem that appears as
Code:
crw-rw---- 1 root dialout 188, 0 Oct 13 07:43 /dev/ttyUSB0
crw-rw---- 1 root dialout 188, 1 Oct 13 07:43 /dev/ttyUSB1
crw-rw---- 1 root dialout 188, 2 Oct 13 07:42 /dev/ttyUSB2
I am a member of the 'dialout' group for user r/w access. (Different distros may assign different groups, depending on the udev rules supplied.)

Here's a guide regarding adding a user to a group. It can be done via CLI, or your distro may have a graphical utility for doing this.

http://www.cyberciti.biz/faq/howto-l...user-to-group/
 
Old 10-12-2014, 02:15 PM   #4
davidsmith2k
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Hi
I am using chirp to read/program my hand held transevier but only started with Linux mint17 today so an idiot guide would be nice?

Thanks david

---------- Post added 10-12-14 at 08:15 PM ----------

Hi
I am using chirp to read/program my hand held transevier but only started with Linux mint17 today so an idiot guide would be nice?

Thanks david
 
Old 10-12-2014, 07:44 PM   #5
ferrari
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Bear in mind that we're not necessarily familiar with your radio device, so we don't know how it appears to your system. Based on a quick online search, it seems that it behaves as a USB serial device, so hence the advice about /dev/ttyUSB*. Of course, without further specific information from you, we're left to guess. Run the command that I gave you in a terminal and report back. The other output that might be useful is to plug in the device and run the following command in a terminal
Code:
dmesg|tail
That might help characterise the device behaviour for us.

Mint user guides (for various desktop environments) here:

http://www.linuxmint.com/documentation/user-guide/
 
Old 10-12-2014, 08:11 PM   #6
michaelk
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In a nutshell Chirp is an application to program memory channels in Amateur Radio equipment.

Did you buy your build your interface cable? As stated the interface cables appear as USB serial ports. If the cable is recognised correctly you should have /dev/ttyUSB0. Its possible that the device was created without read/write permissions for regular users. Did you select the correct serial port in the program?
 
Old 10-13-2014, 06:50 AM   #7
davidsmith2k
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hi
ok i know you are all trying to help me

so i see /dev/ttyUSB0 at the end of the driver list in the chirp program to read/write to the handheld transevier
that is when i get permission denied as i said linux mint is new to me,i am used to using a windows xp system
so and idiots guide please where do i find the folder?? to check these permission.

on a good note linux is good for radio ham

thanks
david
 
Old 10-13-2014, 06:57 AM   #8
michaelk
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Post the output of the command:
ls -l /dev/ttyUSB0
 
Old 10-13-2014, 12:08 PM   #9
ferrari
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Quote:
hi
ok i know you are all trying to help me

so i see /dev/ttyUSB0 at the end of the driver list in the chirp program to read/write to the handheld transevier
that is when i get permission denied as i said linux mint is new to me,i am used to using a windows xp system
so and idiots guide please where do i find the folder?? to check these permission.
I provided those instruction to you already. You still haven't provided the output from the terminal command as requested
Code:
ls -l /dev/ttyUSB*
 
Old 10-15-2014, 07:41 AM   #10
davidsmith2k
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Lightbulb usb permissions

ok i said i needed an idiots guide Termianl is like command in windows that was the bit i did not get but have now

i typed ls -l /dev/ttyUSB*
below is the outcome


david@david-K7S41GX ~ $ 1s -1 /dev/ttyUSB*
1s: command not found
david@david-K7S41GX ~ $ ls -l /dev/ttyUSB*
crw-rw---- 1 root dialout 188, 0 Oct 15 13:25 /dev/ttyUSB0
david@david-K7S41GX ~ $
 
Old 10-15-2014, 08:13 AM   #11
davidsmith2k
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hi again

just tried to use chrip again this what i got will it be of any help???


could not open port /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'


david
 
Old 10-15-2014, 09:08 AM   #12
michaelk
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Could be that your not a member of the dialout group or a modemanager problem. Try adding yourself to the dialout group.

sudo usermod -a -G dialout $USER

http://askubuntu.com/questions/13323...yusb0-on-12-04
 
Old 10-15-2014, 11:40 AM   #13
tredegar
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In addition to what michaelk said above, note that once you have added yourself to the dialout group, you will still need to logout and then login again for the change to be recognised.
 
  


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