This is a small piece of the log when watching a log. the i915 eDP driver receives a "hotplug event received", which corresponds with a slingle flickering of the screen. So I assume something goes wrong with retraining the link, or for some reason the screen thinks that the pc is disconnected and triggers an interrupt, which then for some other reason flickers the screen.
I'm not well-versed with eDP 1.4, so I assume to be totally wrong. ** Attachment added: "relevant portion of dmesg with "drm.debug=14" kernel parameter" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1875649/+attachment/5362494/+files/dmesg.txt -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1875649 Title: Screen flickering in Kubuntu 20.04 on Lenovo Yoga C940 14-IIL To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1875649/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
