I have a Lenovo Thinkpad and a Lenovo dock station....everything was working well until last night. Now the second screen will not mirror the PC screen and when I close the PC screen the Monitor screen also goes blank. I cannot see anything weird in the log apart from 4 of these meaningless 00/00 lines coloured red over the last 24 hours or so...

Jan 30 15:19:27 joan--Carbon kernel: [ 39.505511] ---[ end trace c293571185b7f534 ]---


Jan 30 15:20:44 joan--Carbon systemd-modules-load[295]: Inserted module 'lp'

I can only presume that something has been corrupted....but what? Suggestions very much appreciated!


Today I had the same problem as you. There is a bug in kernel 4.15.0-44. See here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1813765

To downgrade the kernel to 4.15.0-43 please follow instructions from https://itsfoss.com/upgrade-linux-kernel-ubuntu/

  • Thank you so much....I really appreciate your help!
    – dunbrokin
    Jan 31 '19 at 10:20

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.