It should be fixed in later 4.4 kernel [1] In the interim, please try kernel [2].
[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?id=12aa6f7f80c17ea47d0e186bade52272d0a77514 [2] http://people.canonical.com/~khfeng/1686189/ -- 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/1686189 Title: External monitor connecting problem on Intel graphics card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1686189/+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