I need some help with an issue I’m running into with Ubuntu Wine. So, I’m trying to get my USB COM port to work with a Windows application I have running under Wine, and it’s been quite the headache! The application requires access to the COM port to communicate with some hardware, but Wine doesn’t seem to be recognizing it.
I’ve plugged in my USB device, and I can see it in the list of devices when I run `ls /dev/ttyUSB*`. The device shows up as something like `/dev/ttyUSB0`, which is great, but I’ve read that I need to create a symbolic link for it to work properly in Wine. The thing is, I have no clue how to go about setting up this symbolic link correctly, and I’m not sure if I’m missing something fundamental.
I tried following a couple of guides I found online, but I think I might be missing a step or two. I’m on Ubuntu 20.04, and I have Wine installed and working for some other applications, so that part is fine. I ended up trying to create the symbolic link with the command `ln -s /dev/ttyUSB0 ~/.wine/dosdevices/com1`, but then I wondered if I had the right target device or even the correct path. Should I be pointing to a different location, or might I need to adjust permissions somewhere?
I even looked into the groups and made sure my user is part of the ‘dialout’ group, but still no luck. I’m kind of at a standstill here. Has anyone else dealt with something similar?
What I need is some clearer guidance on how to create this symbolic link and any troubleshooting tips for getting my USB COM port recognized in Wine. If there are other commands I should be running or any test I can perform to further diagnose the issue, I’d love to hear about it. Thanks in advance for any help you can give!
To successfully set up your USB COM port for use with your Windows application in Wine, you need to make sure that the symbolic link is correctly created. Start by identifying your USB device in the `/dev` directory. Since you’ve noted that your device appears as `/dev/ttyUSB0`, you can create the symbolic link with the following command:
This command effectively maps the physical device to COM1 in Wine. If you need to use a different COM port in your application, you can create additional symbolic links similarly (e.g., `com2`, `com3`, etc.). After creating the link, ensure that your user has the necessary permissions to access the device. You should be part of the ‘dialout’ group, which you’ve already checked, but you can confirm your group membership by running `groups` in the terminal. If anything seems amiss with the permissions, you may need to log out and back in or use `sudo usermod -aG dialout $USER` to add yourself to the group.
If the application still doesn’t recognize the COM port after setting the symbolic link, check Wine’s configuration by running `winecfg`. Go to the “Serial Ports” tab and ensure that the new COM1 port is visible and properly configured. Additionally, verify that the USB device is not being used by another application in Ubuntu that may prevent Wine from accessing it. As further troubleshooting, you can test the connection using a terminal program such as `minicom` or `screen` to ensure your COM port is functioning correctly outside of Wine before trying again. Lastly, if the issues persist, reviewing logs from Wine or enabling debug messages could help identify where the failure might be occurring.
Help with USB COM Port in Wine on Ubuntu
Sounds like a common issue with getting USB devices recognized in Wine. Here’s a step-by-step guide that might help!
Step 1: Check your device
First, confirm that your USB device is actually showing up correctly. You mentioned running
ls /dev/ttyUSB*. If you see your device listed (like/dev/ttyUSB0), that’s a good sign!Step 2: Creating the symbolic link
Now, to create that symbolic link for Wine, you can open a terminal and run:
Make sure that
ttyUSB0is actually the right device. If you ever unplug and plug it back in, the number (likettyUSB1, etc.) can change, so always check again!Step 3: Permissions check
You mentioned being in the ‘dialout’ group, which is great! You can confirm this by running:
If ‘dialout’ is listed, you should have permission. However, if you’re still having issues, try logging out and back in so that your group permissions are refreshed.
Step 4: Testing the link
To test if it’s working, you can run your Wine application and check if it can access the COM port. If it still doesn’t work, verify that the link was created properly by checking:
You should see a line like:
Extra troubleshooting
If it’s still not working, you might want to check the Wine configuration:
In the “Serial Ports” tab, make sure the port is set up to use
com1. You can also try other configuration options here.Logs and debugging
For further debugging, you could run your Wine application from the terminal and look for any error messages that might give clues.
Hopefully, one of these steps will help you get your USB COM port working with Wine! If you still hit a wall, let us know what you’ve tried and any error messages you see.