Can confirm the same behaviour on an T450s i am testing for a colleague with the Thinkpad Ultra Dock (40A2) and two NEC EA244WMi attached via Displayport.
The frequency is always changing from one till 30 times per hour. But i think i also got the flickering and screen off at the third and internal screen, altough i am not really sure here. Has anyone tried some kernel or Xserver options to mitigate the issue? ** Summary changed: - Screen flickering on second monitor with docking station + [Thinkpad T450s] Screen flickering on second monitor with docking station -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1572667 Title: [Thinkpad T450s] Screen flickering on second monitor with docking station Status in xserver-xorg-video-intel package in Ubuntu: Confirmed Bug description: Ubuntu Gnome 16.04 RC. Screen does flickering some times. Intel HD graphics. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1572667/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
