Display 'Dell Inc. DELL P2418HT' is not recognized when power is turned back on

[tkna91]

I have not found a clear commit range where this occurs, but it did not occur at dc9f217.
It occurs from dcb142b through 1267e47 .

Reproduction procedure

1. Run the bellow script sway-run-debug and login
2. Run $mod+enter foot
3. swaymsg -t get_outputs
4. Turn off the display 'Dell Inc. DELL P2418HT MYDM775F152L' by pressing the power button
5. Press the power button on the display 'Dell Inc. DELL P2418HT MYDM775F152L' to turn it on.
   -> Display not recognized
6. swaymsg -t get_outputs

Environment

• multi-display
• sway version 1.10-dev-087226d99 (Apr 13 2024, branch 'master')
• Debug Log:
  20240413.debug.log
• sway startup script (sway-run-debug):
  sway-run-debug.txt
• Configuration File: /etc/sway/config
• sway-git 1.10.r7332.087226d-1
• wlroots-git 0.18.0.r7002.b1b34cd66-1
• mesa 1:24.0.5-1
• linux 6.8.5.arch1-1

[kennylevinsen]

[wlr] [backend/drm/legacy.c:175] connector HDMI-A-4: drmModePageFlip failed: Device or resource busy

So our attempt to enable the output fails. If you try to enable it again with swaymsg, does it come alive?

Please test with #8095 to see if that resolves the issue.

[tkna91]

@kennylevinsen I checked below and both did not seem to work.

Procedure:

1. sway login
2. Run $mod+enter foot
3. swaymsg -t get_outputs
4. Turn off the display 'Dell Inc. DELL P2418HT MYDM775F152L' by pressing the power button
5. Press the power button on the display 'Dell Inc. DELL P2418HT MYDM775F152L' to turn it on.
   -> Display not recognized
6. swaymsg -t get_outputs
7. swaymsg output HDMI-A-3 power on
   -> Display not recognized
8. swaymsg output HDMI-A-3 power off
9. swaymsg output HDMI-A-3 power on
   -> Display not recognized
10. sway logout

So our attempt to enable the output fails. If you try to enable it again with swaymsg, does it come alive?

• Sway version 1.10-dev-646019cad (Apr 23 2024, branch 'master'):
• sway-run-default_20240424-004046.save.log

Please test with #8095 to see if that resolves the issue.

• Sway version 1.10-dev-3e2047e7 (Apr 24 2024, branch 'search_configs'):
• sway-run-default_20240424-020520.save.log

[kennylevinsen]

It just keeps failing with:

00:00:36.366 [DEBUG] [wlr] [types/output/cursor.c:169] Failed to get cursor display formats
00:00:36.366 [DEBUG] [wlr] [types/output/cursor.c:207] Failed to pick cursor format
00:00:36.366 [DEBUG] [wlr] [types/output/cursor.c:286] Failed to render cursor buffer
00:00:36.366 [DEBUG] [wlr] [types/output/cursor.c:386] Falling back to software cursor on output 'HDMI-A-4'
00:00:36.367 [ERROR] [wlr] [backend/drm/legacy.c:175] connector DVI-D-1: drmModePageFlip failed: Device or resource busy