[Bug 108976] New: HDMI port detected as DVI on newer kernels

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108976

            Bug ID: 108976
           Summary: HDMI port detected as DVI on newer kernels
           Product: DRI
           Version: unspecified
          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: zardam at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 142749
  --> https://bugs.freedesktop.org/attachment.cgi?id=142749&action=edit
video bios

I'm using debian stretch on a Shuttle SG33 system (Intel G33 Chipset).

With debian kernel 4.9.0-8-amd64, the two output ports are correctly discovered
: one HDMI and one VGA: 

$ ls /sys/class/drm/
card0  card0-HDMI-A-1  card0-VGA-1  controlD64  renderD128  version

With debian kernel 4.18.0 (from stretch-backports), the HDMI port is discovered
as DVI port, and the audio output no longer works on this port:

$ ls /sys/class/drm/
card0  card0-DVI-D-1  card0-VGA-1  renderD128  version

My "main" issue is the missing audio on the HDMI port when it is detected as
DVI. The video is working properly.

I'm attaching the video bios, but I don't know it it is relevant, I can provide
more information if needed.

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