[Bug 112072] DisplayPort over USB-Type C Connector Not Recognised on Intel NUC8i5BEK (Gen 9, CoffeeLake)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=112072

--- Comment #3 from Geoffrey Allott <geoffrey at allott.email> ---
> Even though it's reported as disconnected, edp still working?

> Are there 2 issues in this bug? edp is not working and external display works with only resolution 1024x768?

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
> echo $connector
> ls $connector
> cat $connector/enabled
> cat $connector/edid
> cat $connector/modes
> cat $connector/status
> done
/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:
https://pastebin.com/dmAdM17T

-- 
You are receiving this mail because:
You are on the CC list for the bug.
You are the assignee for the bug.
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20191021/3a505149/attachment.html>