[Bug 89419] New: [SKL][Audio][HD-A Display]: Can't detect Display audio codec if not connect HDMI and DP monitor when boot up

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89419

            Bug ID: 89419
           Summary: [SKL][Audio][HD-A Display]: Can't detect Display audio
                    codec if not connect HDMI and DP monitor when boot up
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: libin.yang at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Bug detailed description
=======
Not connect extra monitor(HDMI and DP), boot up latest drm-intel-internal
kernel.
In /proc/asound/card0/, can't find display audio codec
Reproduce Steps
==============
ls /proc/asound/card0/
cat /proc/asound/pcm
Expected Result
=============
codec#0 codec#2 eld#2.0 eld#2.1 eld#2.2 id oss_mixer pcm0c pcm0p pcm3p pcm7p
pcm8p
00-00: ALC286 Analog : ALC286 Analog : playback 1 : capture 1
00-03: HDMI 0 : HDMI 0 : playback 1
00-07: HDMI 1 : HDMI 1 : playback 1
00-08: HDMI 2 : HDMI 2 : playback 1
Actual Result
===========
codec#0 id oss_mixer pcm0c pcm0p
00-00: ALC286 Analog : ALC286 Analog : playback 1 : capture 1

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