[Bug 107145] New: two displays work; another is detected but black. dmesg told me to file a new bug here

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107145

            Bug ID: 107145
           Summary: two displays work; another is detected but black.
                    dmesg told me to file a new bug here
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: flower at k1024.de
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 140485
  --> https://bugs.freedesktop.org/attachment.cgi?id=140485&action=edit
/sys/class/drm/card0/error

ASUS PRIME B250M-C. Intel i7 6700K CPU
Kernel: 4.17.3-1-ARCH

Effect: HDMI and Displayport works; DVI-D does not.
Screen is detected and used by Xorg (i can move my mouse on it) but it stays
black. It does work on console - but there all screens are mirrored

dmesg shows:
[flower at vicky ~]$ dmesg |grep drm
[    0.815471] [drm] VT-d active for gfx access
[    0.815473] fb: switching to inteldrmfb from EFI VGA
[    0.815563] [drm] Replacing VGA console driver
[    0.816372] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    0.816372] [drm] Driver supports precise vblank timestamp query.
[    0.817011] [drm] Finished loading DMC firmware i915/skl_dmc_ver1_27.bin
(v1.27)
[    0.817303] [drm] Disabling framebuffer compression (FBC) to prevent screen
flicker with VT-d enabled
[    0.821377] [drm] HuC: Loaded firmware i915/skl_huc_ver01_07_1398.bin
(version 1.7)
[    0.832003] [drm] GuC: Loaded firmware i915/skl_guc_ver9_33.bin (version
9.33)
[    0.845183] [drm] Initialized i915 1.6.0 20180308 for 0000:00:02.0 on minor
0
[    1.009185] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[   70.967122] [drm] GPU HANG: ecode 9:0:0x84d77cfc, in Xorg [846], reason: No
progress on rcs0, action: reset
[   70.967124] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[   70.967124] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[   70.967125] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[   70.967125] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[   70.967126] [drm] GPU crash dump saved to /sys/class/drm/card0/error

Crash dump from is supplied as attachment /sys/class/drm/card0/error
Please tell me if you need any additional inforomation.

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