[Bug 103779] New: Option 'video=HDMI-...' stops working since kernel v4.2-rc ( commit 972e7d71c82e )

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103779

            Bug ID: 103779
           Summary: Option 'video=HDMI-...' stops working since kernel
                    v4.2-rc ( commit 972e7d71c82e )
           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: tkazimierczak at sims.pl
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 135517
  --> https://bugs.freedesktop.org/attachment.cgi?id=135517&action=edit
kernel patch

Since commit 972e7d71c82ea70100b808695d5cf735c1df5ef8 the kernel option
'video=HDMI-A-1:1920x1080e' stop working.

Commit description head is: "drm/i915: Ignore "digital output" and "not HDMI
output" bits for eDP detection".

After applying simple patch to the yesterday (16.11.2017) latest kernel (commit
06718a287f282ad31264560c5dc18a38474cb562), the problem is fixed (i.e.
functionality is restored):

@@ -240,6 +240,7 @@ struct bdb_general_features {
  */
 #define DEVICE_TYPE_eDP_BITS \
        (DEVICE_TYPE_INTERNAL_CONNECTOR |       \
+        DEVICE_TYPE_NOT_HDMI_OUTPUT |          \
         DEVICE_TYPE_MIPI_OUTPUT |              \
         DEVICE_TYPE_COMPOSITE_OUTPUT |         \
         DEVICE_TYPE_DUAL_CHANNEL |             \


Patch and full dmesg of kernel with and without patch attached.

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