[Bug 2084046] Re: [i915] Phantom "Unknown" display detected

I've an i915 Intel laptop running Oracular, but i can't reproduce the
issue:

```
[ 0.321780] ACPI: bus type drm_connector registered
[ 0.330979] [drm] Initialized simpledrm 1.0.0 for simple-framebuffer.0 on minor 0
[ 0.333513] simple-framebuffer simple-framebuffer.0: [drm] fb0: simpledrmdrmfb frame buffer device
[ 277.421832] systemd[1]: Starting modprobe@drm.service - Load Kernel Module drm...
[ 277.465174] systemd[1]: modprobe@drm.service: Deactivated successfully.
[ 277.465518] systemd[1]: Finished modprobe@drm.service - Load Kernel Module drm.
[ 279.477357] i915 0000:00:02.0: [drm] Found BROADWELL/ULT (device ID 1616) display version 8.00 stepping N/A
[ 279.516954] [drm] ACPI BIOS requests an excessive sleep of 25000 ms, using 1500 ms instead
[ 280.076369] [drm] Initialized i915 1.6.0 for 0000:00:02.0 on minor 1
[ 280.175032] fbcon: i915drmfb (fb0) is primary device
[ 280.175042] i915 0000:00:02.0: [drm] fb0: i915drmfb frame buffer device
```

$ ls -la /dev/dri/card*
crw-rw----+ 1 root video 226, 1 Oct 10 20:21 /dev/dri/card1

$ ls -la /dev/dri/by-path/
lrwxrwxrwx 1 root root 8 Oct 10 20:21 pci-0000:00:02.0-card -> ../card1

$ lspci
...
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 5500 (rev 09)

the interesting bit is that my i915 GPU is marked as card1, and not
card0 (e.g. simpledrm was loaded earlier, attached as card0 but later
unloaded?)

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https://bugs.launchpad.net/bugs/2084046

Title:
[i915] Phantom "Unknown" display detected

Status in linux package in Ubuntu:
New

Bug description:
Settings is reporting a second display ("Unknown") is connected. This
is on a laptop which has nothing plugged in and only an Intel GPU.

It appears the problem is once again (like bug 2060268) SimpleDRM:

Node: /dev/dri/card0
├───Driver: simpledrm (DRM driver for simple-framebuffer platform devices) version 1.0.0 (0)
--
Node: /dev/dri/card1
├───Driver: i915 (Intel Graphics) version 1.6.0 (0)

Linux version 6.11.0-8-generic (buildd@lcy02-amd64-042) (x86_64-linux-
gnu-gcc-14 (Ubuntu 14.2.0-4ubuntu2) 14.2.0, GNU ld (GNU Binutils for
Ubuntu) 2.43.1) #8-Ubuntu SMP PREEMPT_DYNAMIC Mon Sep 16 13:41:20 UTC
2024 (Ubuntu 6.11.0-8.8-generic 6.11.0)

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