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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - DVI-D monitor connected to DVI-I output not detected (regression from kernel 4.14.32 to kernel 4.16.0 using graphic core)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105911#c13">Comment # 13</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - DVI-D monitor connected to DVI-I output not detected (regression from kernel 4.14.32 to kernel 4.16.0 using graphic core)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105911">bug 105911</a>
from <span class="vcard"><a class="email" href="mailto:tnmailinglists@gmail.com" title="tnmailinglists@gmail.com">tnmailinglists@gmail.com</a>
</span></b>
<pre>I now booted with amdgpu.dc_log=1 and found the following in my log when DC is
on (I'm currently on 4.15.0.36):
[ 1.479998] [drm] DC: create_links: connectors_num: physical:4, virtual:0
[ 1.480001] [drm] Connector[0] description:signal 32
[ 1.480029] [drm] Connector[1] description:signal 4
[ 1.480031] [drm] dce110_link_encoder_construct: Failed to get
encoder_cap_info from VBIOS with error code 4!
[ 1.480046] [drm] Connector[2] description:signal 2
[ 1.480048] [drm] dce110_link_encoder_construct: Failed to get
encoder_cap_info from VBIOS with error code 4!
[ 1.480064] [drm] Connector[3] description:signal 2
[ 1.480066] [drm] dce110_link_encoder_construct: Failed to get
encoder_cap_info from VBIOS with error code 4!
[ 1.492083] [drm] Display Core initialized
[ 1.492091] [drm] Display Core initialized!
[ 1.492427] [drm] link=0, dc_sink_in= (null) is now Disconnected
[ 1.492555] [drm] link=1, dc_sink_in= (null) is now Disconnected
[ 1.492683] [drm] link=2, dc_sink_in= (null) is now Disconnected
[ 1.505440] [drm] SADs count is: -2, don't need to read it
[ 1.505453] [drm] [Detect] [DDVI][ConnIdx:3] EDID goes here
[ 1.505455] [drm] dc_link_detect: EDID decoded goes here
[ 1.505456] [drm] link=3, dc_sink_in= (ptrval) is now Connected
This does seem to show that connector 3 is incorrectly identified as dual link
DVI-D, or at least missing/not using the analogue part.</pre>
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