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Kernel: 5.15.0-41-generic x86_64 bits: 64 compiler: gcc v: 11.2.0 Desktop: Cinnamon 5.4.8 tk: GTK 3.24.33 wm: Moher dm: LightDM Distro: Linux Mint 21 Vanessa base: Ubuntu 22.04 jammy

I have a FTDI USB To Serial Adapter but it is not working despite that it should work out of the box on Linux Mint.

I tried dmesg:

dmesg |grep -i FTDI^C
6370.174721] usb 1-4: Manufacturer: FTDI
[ 6370.181796] ftdi_sio 1-4:1.0: FTDI USB Serial Device converter detected
[ 6370.183103] usb 1-4: FTDI USB Serial Device converter now attached to
ttyUSB4
[ 6373.876084] usb 1-4: usbfs: interface 0 claimed by ftdi_sio while
'brltty' sets config #1
[ 6373.877490] ftdi_sio ttyUSB4: FTDI USB Serial Device converter now
disconnected from ttyUSB4
[ 6373.877559] ftdi_sio 1-4:1.0: device disconnected

It conntects to port ttyUSB4 but disconnects immedeatly

Improve this question
1
  • Yes, it should just work. When they don't it's time to consider whether or not the device is either defective or a counterfeit (most likely). Commented Jan 10, 2023 at 11:33

1 Answer 1

Reset to default
1

Take a look at brltty, it is a known issue. That is a controller for a braille interface. Purging brltty and a restart fixes this issue.

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  • Your answer could be improved with additional supporting information. Please edit to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers in the help center. Commented Feb 16, 2023 at 20:39
  • Thanks! I actually found this myself in the linux mint forums but that was the correct answer. I forgot to update this thread... Commented Feb 17, 2023 at 4:40
  • Bob, you are my hero! All my USB ports failed, both those from the mainboard and those from a hub. Using Linux Mint 21 Mate, fully up to date. Uninstalling brltty and everything works again! If this is a known issue, why is it still present on latest Ubuntu and Mint? Commented Jul 18, 2023 at 11:27

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