# Debian Bullseye Bug Remedy Script **URL:** \ **Category:** General Discussion\ **Created:** [September 12, 2023, 4:28am UTC](https://klipper.discourse.group/t/debian-bullseye-bug-remedy-script/10435 "2023-09-12T04:28:59Z")\ **Posts on this page:** 1\ **Showing post:** 5
**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\ **Post date:** [September 14, 2023, 6:22am UTC](https://klipper.discourse.group/t/debian-bullseye-bug-remedy-script/10435/5 "2023-09-14T06:22:07Z")
I have turned the instructions [Debian Bullseye Bug causing Klipper to no longer find the printer board - #8](https://klipper.discourse.group/t/debian-bullseye-bug-causing-klipper-to-no-longer-find-the-printer-board/8231/8) into a shell script: [https://raw.githubusercontent.com/Sineos/useful\_bits/main/Linux/fix\_debian\_udev.sh](https://raw.githubusercontent.com/Sineos/useful_bits/main/Linux/fix_debian_udev.sh) It will: - Check if it is executed on Debian 11 - Check if the installed udev contains the buggy version string - Check if run as root or under root rights - Update the system to the latest versions via `apt update` and `apt upgrade` - If Debian 11 AND buggy udev AND root is found, it will: - Check if the Debian 11 `backports repository` is already present → If not, download the repository signing key and install the repository - Install the fixed udev from the backports repository Run it via ```auto curl -sf -L https://raw.githubusercontent.com/Sineos/useful_bits/main/Linux/fix_debian_udev.sh | sudo bash ``` Above command will run the script as **root** Only do this if you trust me or if you have verified the script beforehand. Any tests would be appreciated. I did test it on various different OS versions, like MainsailOS, Pi OS lite etc. --- _[View the full topic](https://klipper.discourse.group/t/debian-bullseye-bug-remedy-script/10435)._