The error appears to be the a failure to establish the link between the GPU and the display block:
[ 18.189110] [drm:ivb_manual_fdi_link_train] *ERROR* FDI train 1 fail! [ 18.191270] [drm:ivb_manual_fdi_link_train] *ERROR* FDI train 2 fail! which will result in blank outputs. Tricky, the specs do not detail why such failures occur so we can only hope that we accidentally fix it. ** Summary changed: - Ivybridge dual monitor set resolution warning in ironlake_crtc_mode_set + [ivb] FDI train failure with dual monitors -- 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/1190527 Title: [ivb] FDI train failure with dual monitors To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1190527/+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
