[Bug 107980] New: (Tiled) MST display Dell UP3214Q only initialized very late

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107980

            Bug ID: 107980
           Summary: (Tiled) MST display Dell UP3214Q only initialized very
                    late
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: pmenzel+bugs.freedesktop at molgen.mpg.de
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 141642
  --> https://bugs.freedesktop.org/attachment.cgi?id=141642&action=edit
Linux 4.19-rc4+ (drm-tip) messages

Using the MST display Dell UP3214Q connected over DisplayPort, with at least
Linux 4.14, Linux 4.18.6, and drm-tip, the early Linux messages are not shown
on the screen.

Note, that the firmware of the Fujitsu system is not able to initialize the
display, so neither the Fujitsu logo nor the GRUB menu is visible. (Legacy boot
is used.)

Despite these issues, the early Intel driver should display something in
fallback mode. Can this be done?

Please find the logs attached.

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