this post was submitted on 19 Jul 2024
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Linux Gaming

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Options for Lian Li Fan Control (lemmy.world)
submitted 4 months ago by gazoinksboe@lemmy.world to c/linux_gaming@lemmy.world
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Hello! I have recently begun gaming on Nobara Linux and overall, my experience has been quite good. The biggest issue I’ve experienced so far is not being able to control my Lian Li SL V2 fan controller. The fans connected to the controller are only recognized in my BIOS once I run L-Connect 3 in windows but if my system is shut down, they are no longer seen. I have seen this https://github.com/EightB1ts/uni-sync and a plugin for OpenRGB, but keep running into compilation errors and/or lack of maintaining the project. Any advice is very appreciated!

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[–] Overdraft@lemmy.ml 1 points 3 months ago* (last edited 3 months ago) (1 children)

Geeze, that's extremely frustrating... they really switched up the headaches between v1 and v2. I'm sorry I couldn't be more help! Hopefully you can find a software solution to get it going.

I don't mean to repeat troubleshooting you've already done with the python script, apologies in advance if this is stuff you've already done. If it's erroring immediately, you may want to double check that you have pyUSB in place and UDEV rules to get access to the device if you're not running the script as root.

edit: You may also need to check that your Vendor ID and Product ID match what the script was written for, given that there seem to be some different iterations of Lian Li's hardware just in general.

[–] gazoinksboe@lemmy.world 1 points 3 months ago* (last edited 3 months ago) (1 children)

Thank you so much for continuing to try and help. It’s greatly appreciated. I am very new to Linux so while I can do some basics, this is very helpful. I installed pyUSB but still get an error when running the script. I have the script placed in my home folder. Should it be elsewhere? The error I get is “No module named ‘usb’. I did adjust the script to have my controller’s proper identification so feels like I’m missing a small piece of the puzzle!

[–] Overdraft@lemmy.ml 1 points 3 months ago (1 children)

I'm not familiar with Nobara, but I can at least show how I would install pyUSB for use in Debian:

If you follow the instructions exactly as in the readme, it will error:

$ pip install pyusb
error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
    python3-xyz, where xyz is the package you are trying to
    install.
    
    If you wish to install a non-Debian-packaged Python package,
    create a virtual environment using python3 -m venv path/to/venv.
    Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
    sure you have python3-full installed.
    
    If you wish to install a non-Debian packaged Python application,
    it may be easiest to use pipx install xyz, which will manage a
    virtual environment for you. Make sure you have pipx installed.
    
    See /usr/share/doc/python3.11/README.venv for more information.

note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification.

Instead, I would create a virtual environment (I'm using virtualenv instead of venv)

$ virtualenv unihub_test

Then activate the environment and run the install with pip

$ source ~/unihub_test/bin/activate
(unihub_test) $ pip install pyusb
Collecting pyusb
  Using cached pyusb-1.2.1-py3-none-any.whl.metadata (2.2 kB)
Using cached pyusb-1.2.1-py3-none-any.whl (58 kB)
Installing collected packages: pyusb
Successfully installed pyusb-1.2.1

(unihub_test) $ python3
>>> import usb #this should not error
>>> exit()
(unihub_test) $ deactivate
$

Without the actual hub, that's as far as I can go I think - but maybe this will help give you some options and documentation to explore!

[–] gazoinksboe@lemmy.world 2 points 3 months ago

Thank you. This is great info. I will give this a shot when I can.