I am reminded of https://bugs.freedesktop.org/show_bug.cgi?id=98876, but that is about the modesetting driver which you are not using.
You seem to be using the Intel driver and your log says: [ 41.117] (==) intel(0): TearFree disabled so please try doing https://wiki.archlinux.org/index.php/intel_graphics #Tear-free_video ** Bug watch added: freedesktop.org Bugzilla #98876 https://bugs.freedesktop.org/show_bug.cgi?id=98876 ** Also affects: xorg-server via https://bugs.freedesktop.org/show_bug.cgi?id=98876 Importance: Unknown Status: Unknown ** No longer affects: xorg-server -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1797030 Title: screen always flickers after videos kind of like refreshing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1797030/+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
