33 lines
1.1 KiB
Markdown
33 lines
1.1 KiB
Markdown
# ttyUSB0 not present when using CH340
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First encountered when using an Arduino Uno with Linux Mint 21.2 Cinnamon. The Arduino Uno used has a CH340 USB to serial converter.
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According to some information found on [Ask Ubuntu](https://askubuntu.com/questions/1403705/dev-ttyusb0-not-present-in-ubuntu-22-04) there seems to be a braille device with this chip and Linix seems to give it to brltty.
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*Note: this tip was tested on a Dutch version of Linux Mint. Keep this in mind for other derivatives of Debian and some translation errors by me.*
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## Steps
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* Open a terminal window
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* Execute the following command to see if Linux can actually see the device
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```sh
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lsusb
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```
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* Check the output ans see if a CH340 is present, see example below
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```sh
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Bus 003 Device 005: ID 1a86:7523 QinHeng Electronics CH340 serial converter
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```
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* If the device indead is present, and you don´t use any braille device, execute the following
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```sh
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sudo apt-get autoremove --purge -y brltty
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```
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## Source
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* [Ask Ubuntu](https://askubuntu.com/questions/1403705/dev-ttyusb0-not-present-in-ubuntu-22-04)
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