# SKR3 EZ - No MCU serial

**URL:** <https://klipper.discourse.group/t/skr3-ez-no-mcu-serial/9961>\
**Category:** General Discussion\
**Created:** [August 15, 2023, 8:28pm UTC](https://klipper.discourse.group/t/skr3-ez-no-mcu-serial/9961 "2023-08-15T20:28:09Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**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:** [August 17, 2023, 4:16pm UTC](https://klipper.discourse.group/t/skr3-ez-no-mcu-serial/9961/6 "2023-08-17T16:16:06Z")

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If you are running Debian Bullseye then check: [Debian Bullseye Bug causing Klipper to no longer find the printer board](https://klipper.discourse.group/t/debian-bullseye-bug-causing-klipper-to-no-longer-find-the-printer-board/8231)

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_[View the full topic](https://klipper.discourse.group/t/skr3-ez-no-mcu-serial/9961)._