Displayport job be skipped since gnome-randr cannot get DP information

[PeiYao Chang]

[Summary]
There are two output port, HDMI and Displayport, on "All In One" DUT.
But "gnome-randr" cannot get the information of Displayport, cause the checkbox cases related to Displayport are skipped automatically.
  - See: https://certification.canonical.com/hardware/202207-30419/submission/272693/test/168578/result/27221500/

If Windowing System is Wayland, checkbox grabs the info of monitor via "gnome-randr" command.
   commit: https://git.launchpad.net/plainbox-provider-resource/commit/?id=8901ac96bb0b52d54c9501240b07b6a95783ced9

[Steps to reproduce]
1. Boot into OS
2. Run 'gnome-randr' command to get the information of physical monitors

[Expected result]
It should give HDMI and DP information

[Actual result]
Only HDMI information

gnome-randr's output on DAKAR-DGPU-EVT-C6
==============================================================
supports-mirroring: true
layout-mode: physical
supports-changing-layout-mode: false
global-scale-required: false
renderer: "native"
legacy-ui-scaling-factor: 1

logical monitor 0:
x: 0, y: 0, scale: 1, rotation: normal, primary: yes
associated physical monitors:
 HDMI-1 DEL OptiPlex AIO 0x44474c78

HDMI-1 DEL OptiPlex AIO 0x44474c78
  1920x1080@62.040439605712891 1920x1080 62.04*+ [x1.00+, x2.00]
                  1920x1080@60 1920x1080 60.00 [x1.00+, x2.00]
  1680x1050@59.883251190185547 1680x1050 59.88 [x1.00+, x2.00]
   1440x900@59.901458740234375 1440x900 59.90 [x1.00+]
  1280x1024@60.019741058349609 1280x1024 60.02 [x1.00+]
                   1280x720@60 1280x720 60.00 [x1.00+]
   1024x768@60.003841400146484 1024x768 60.00 [x1.00+]
    800x600@60.316539764404297 800x600 60.32 [x1.00+]
is-builtin: false
display-name: "Dell Inc. 23\""
==============================================================

[Failure rate]
always

[Additional Info]
CID: 202207-30419, 202207-30420
SKU: DAKAR-DGPU-EVT-C6, DAKAR-UMA-EVT-C4
Image: dell-bto-jammy-jellyfish-chansey-X21-20220704-2.iso

[PeiYao Chang (baconyao)]

Other information:

SKU: DAKAR-UMA-EVT-C2 (202207-30418) and DP case is skipped as well.

This SKU has one Displayport only, its gnome-randr info

=============================================================
supports-mirroring: true
layout-mode: physical
supports-changing-layout-mode: false
global-scale-required: false
renderer: "native"
legacy-ui-scaling-factor: 1

logical monitor 0:
x: 0, y: 0, scale: 1, rotation: normal, primary: yes
associated physical monitors:
 eDP-1 RTK 0x40b0 0x12345678

eDP-1 RTK 0x40b0 0x12345678
                  1920x1080@60 1920x1080 60.00*+ [x1.00+, x2.00]
  1680x1050@59.954250335693359 1680x1050 59.95 [x1.00+, x2.00]
   1600x900@59.946022033691406 1600x900 59.95 [x1.00+]
  1440x1080@59.988838195800781 1440x1080 59.99 [x1.00+, x2.00]
   1440x900@59.887443542480469 1440x900 59.89 [x1.00+]
  1400x1050@59.978443145751953 1400x1050 59.98 [x1.00+]
   1368x768@59.882049560546875 1368x768 59.88 [x1.00+]
   1280x960@59.939048767089844 1280x960 59.94 [x1.00+]
   1280x800@59.810325622558594 1280x800 59.81 [x1.00+]
   1280x720@59.855125427246094 1280x720 59.86 [x1.00+]
   1152x864@59.958633422851562 1152x864 59.96 [x1.00+]
   1024x768@59.920131683349609 1024x768 59.92 [x1.00+]
    800x600@59.861404418945312 800x600 59.86 [x1.00+]
is-builtin: true
display-name: "Built-in display"
=============================================================

[Clair Lin (clairlin)]

Issue can reproduce on Boggle24 (stella AIO project)

CID:202112-29751
C3 results:https://certification.canonical.com/hardware/202112-29751/submission/274256/test-results/?term=displayport

[Pierre Equoy (pieq)]

@PeiYao, I would like to compare the output from gnome-randr to the one from xrandr.

Could you follow these steps and attach the output here?

1. Connect a screen to the DisplayPort
2. In a Wayland session (the default), run the following commands and capture their output:
    - gnome-randr
    - xrandr (even though you are in a Wayland session, this command should still output something)
3. Log out, and using the little cog icon at the bottom right of the user selection screen, select "Ubuntu on Xorg" (see screenshot[1])
4. Now that you are in the X11 session, run the following command and capture their output:
    - xrandr

Thanks!

[1] https://linuxconfig.org/wp-content/uploads/2022/01/02-how-to-enable-disable-wayland-on-ubuntu-22-04-desktop.png

[PeiYao Chang (baconyao)]

@Pier

Attachment is the gnome-randr and xrandr output for #5

[Weichen Wu (weichenwu)]

This issue is also observed on OAS4-DVT1-C4/OAS6-DVT1-C2.
The system has bulid-in HDMI port but test cases were skipped since display.hdmi was marked as non-supported

[Maksim Beliaev (beliaev-maksim)]

Bug was migrated to GitHub: https://github.com/canonical/checkbox/issues/56.
Bug is no more monitored here.