[Bug 104257] New: [CFL-S] DP monitor is detected as second monitor when there is only one connected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104257

            Bug ID: 104257
           Summary: [CFL-S] DP monitor is detected as second monitor when
                    there is only one connected
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jing1.han at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 136164
  --> https://bugs.freedesktop.org/attachment.cgi?id=136164&action=edit
dmesg on CFL-S

When testing SLE15-Beta3 on CFL-S (Coffee Lake) platform with only one DP
monitor connected, after OS installation, the system boot into "empty" desktop
which is the extension desktop.
If the monitor is HDMI rather than DP, the system boot into normal main
desktop.
The issue is still there with latest drm-intel kernel. Please see the dmesg
attached.

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