Homelab, Linux, JS & ABAP (~˘▾˘)~

[Linux Mint] Wemos D1 Mini (ESP8266) not recognized

I had a few D1 Minis lying around that I wanted to flash WLED onto. But when plugging into my main PC running Linux Mint 21, no device got recognized. The D1 Mini was just flashing its blue LED light 2 times and that was all. I had already checked before, whether the USB cable is also a Data Link cable, because now and then you accidentally grab a USB cable which is charging only.

Since I was pretty sure it wasn’t a hardware problem, I checked dmesg for any suspicious messages. I’m using an alias named klog to beautify the output.

sudo dmesg -t -L=never -l emerg,alert,crit,err,warn --human --nopager

And indeed there were some messages regarding USB.

usbfs: interface 0 claimed by ch341 while 'brltty' sets config #1

Since brltty is software for people with visual impairment, I don’t need it and therefore uninstalled it.

sudo apt remove brltty
sudo apt autoclean && sudo apt autoremove

And after removing brltty, my D1 Mini got recognized immediately. Fortunately, the solution was very simple. 🙂

[Software] Ventoy


“Ventoy is an open source tool to create bootable USB drive for ISO/WIM/IMG/VHD(x)/EFI files.
With ventoy, you don’t need to format the disk over and over, you just need to copy the ISO/WIM/IMG/VHD(x)/EFI files to the USB drive and boot them directly.”

Download: https://github.com/ventoy/Ventoy/releases
Installation: https://www.ventoy.net/en/doc_start.html

sudo sh Ventoy2Disk.sh -i /dev/sdx