It seems also just switching displays makes the kernel upset, please see attached dmesg output. Also, please consider making https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1568573 a duplicate, as it seems to involve the same cases and error messages.
** Attachment added: "dmesg-switch-displays" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1578011/+attachment/4709293/+files/dmesg-switch-displays -- 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/1578011 Title: Laptop sometimes doesn't detect external monitor when docked To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1578011/+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
