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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - DisplayPort over USB-Type C Connector Not Recognised on Intel NUC8i5BEK (Gen 9, CoffeeLake)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=112072#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - DisplayPort over USB-Type C Connector Not Recognised on Intel NUC8i5BEK (Gen 9, CoffeeLake)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=112072">bug 112072</a>
from <span class="vcard"><a class="email" href="mailto:geoffrey@allott.email" title="Geoffrey Allott <geoffrey@allott.email>"> <span class="fn">Geoffrey Allott</span></a>
</span></b>
<pre><span class="quote">> Even though it's reported as disconnected, edp still working?</span >
<span class="quote">> Are there 2 issues in this bug? edp is not working and external display works with only resolution 1024x768?</span >
Please forgive me, I'm not super-familiar with this stuff. The device is just a
small box & has no integrated display. I assume that means eDP should not work.
Please correct me if I'm wrong and eDP controls the external ports. The problem
is that the screen's native resolution is not detected.
There is no such file /sys/kernel/debug/dri/0/i915_display_info on my system.
Here's the info I can gather:
$ ls /sys/class/drm
card0 card0-DP-1 card0-DP-2 card0-HDMI-A-1 renderD128 version
$ for connector in /sys/class/drm/card0-*; do
<span class="quote">> echo $connector
> ls $connector
> cat $connector/enabled
> cat $connector/edid
> cat $connector/modes
> cat $connector/status
> done</span >
/sys/class/drm/card0-DP-1
device dpms edid enabled i2c-4 modes power status subsystem uevent
disabled
disconnected
/sys/class/drm/card0-DP-2
device dpms edid enabled i2c-5 modes power status subsystem uevent
enabled
1024x768
800x600
800x600
848x480
640x480
connected
/sys/class/drm/card0-HDMI-A-1
device dpms edid enabled i2c-1 modes power status subsystem uevent
disabled
disconnected
Here's the log with drm-tip and the command line you mentioned:
<a href="https://pastebin.com/dmAdM17T">https://pastebin.com/dmAdM17T</a></pre>
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