USB error opening port UBUNTU

gSender 🐛 Bug
1

SOLVED
I just had success! The machine is an intel PC running UBUNTU 24.04 LTS. I issued the following command to give permission to myself to access the USB port. Why I have to do this I’ll never understand

Open terminal and type:
sudo chown username /dev/ttyACM0

Or whatever the port name is on your machine.

Hope this helps someone.

Hi folks,
I just fired up gsender 1.4.9 on my intel based Ubuntu machine, fully updated, and I can see the SLB as a device, but when I select it, I get the “error opening port” error. Baud is set to 115200. I tried several different USB cables and ports although the SLB is showing up so I think the connection is good. Also tried power cycling both board and PC. PC bios has legacy enabled. Ug.
Anything else to try? I’m dead in the water.
Thanks,
Tyler

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2

Nothing better than solving a problem on your own! How incredibly satisfying! What is really cool, you posted your solution here in case anyone else has a similar problem. Thank you!
Jake

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Quick point @wiremonkey - sometimes when that port gets unplugged and plugged back in, the ownership will revert, and you will have to run chown again.

For a permanent fix, add your user to the dialout group, with:

sudo usermod -a -G dialout $USER

Make sure to log out and back in again.

This will permanently put your user in a group that has permission for those devices.

1 Like
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Perfect! Thanks for the tip. I’m not great with linux, the “$USER” you indicate is my user name without the dollar sign, correct?

5

Thanks, I’m happy to contribute what little I can in this grblHAL journey!

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Hi @wiremonkey - the $USER will automatically substitute your user name for you - but that said, using your Linux username (without the dollar sign) will also work :slight_smile:

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