After your comment i did some more tests -- just in case. Enabled VT-d and removed intel_iommu=igfx_off line. Result is really interesting: I get oops only on second boot without igfx_off. First boot without igfx_off is ok, both displays are working, but after power off and new start with same configuration - without igfx_off kernel it will oops.
Other Zenbook had similar problem with suspend. After some suspend issue it wasn't able to boot. Reason - memory corruption. May be some thing similar is happening here. And some controller stay confused after power off with not setted "intel_iommu=igfx_off". -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/946311 Title: only external screen is working with asus zenbook ux31e [eDP1] To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/946311/+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
