# MCU \_problem\_ cannot access '/dev/by-id/'

**URL:** <https://klipper.discourse.group/t/mcu-problem-cannot-access-dev-by-id/9992>\
**Category:** General Discussion\
**Created:** [August 18, 2023, 12:08pm UTC](https://klipper.discourse.group/t/mcu-problem-cannot-access-dev-by-id/9992 "2023-08-18T12:08:16Z")\
**Posts on this page:** 1\
**Showing post:** 21

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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 23, 2023, 6:58am UTC](https://klipper.discourse.group/t/mcu-problem-cannot-access-dev-by-id/9992/21 "2023-08-23T06:58:04Z")

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If you still have these low level Kernel errors, then it is very unlikely that working on the udev system will do any good.  
Follow [Linux dmesg](https://klipper.discourse.group/t/how-to-trouble-shoot/6326#linux-dmesg-5) and post the dmesg.txt

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