Latest reliable kernel is 4.3.4-200.fc22.x86_64 for me. Any later is most of the times not "detecting" any monitors/output to be used in Xrog, text consoles results in a blank screen too. Even when it occasionaly starts Xorg then switching to text console is resulting in "no signal". Starting seconds Xorg session results in session not beeing correctly started. There is a e.g. https://bugzilla.redhat.com/show_bug.cgi?id=1317231 "solved" but even with 4.5.7-202.fc23.x86_64 I have no ouput on DP on the start. This is intel NUC D54250WYK 00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller From working session: [ 16.207] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets: i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G, 915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45, 4 Series, G45/G43, Q45/Q43, G41, B43 [ 16.207] (II) intel: Driver for Intel(R) HD Graphics: 2000-6000 [ 16.207] (II) intel: Driver for Intel(R) Iris(TM) Graphics: 5100, 6100 [ 16.207] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics: 5200, 6200, P6300 [ 16.207] (II) modesetting: Driver for Modesetting Kernel Drivers: kms [ 16.207] (II) FBDEV: driver for framebuffer: fbdev [ 16.207] (II) VESA: driver for VESA chipsets: vesa [ 16.207] xf86EnableIOPorts: failed to set IOPL for I/O (Operation not permitted) [ 16.208] (II) intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20151218
Adam - We seem to have neglected the bug quite a bit, apologies. Do you see this problem with the latest kernel (preferable drm-tip branch from git://anongit.freedesktop.org/drm-tip) ? Mark this as REOPENED if you can reproduce (and attach kernel log) and RESOLVED if you cannot reproduce. See more information for data "required" from https://01.org/linuxgraphics/documentation/how-report-bugs
As we reported in redhat bugzilla this seems to be resolved in kernels 4.8.10+. Thanks anyway.
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