https://bugs.kde.org/show_bug.cgi?id=461822

--- Comment #9 from Raman Gupta <rocketra...@gmail.com> ---
(In reply to Nate Graham from comment #7)
> Thanks. There's probably a bug in the detection algorithm that's causing it
> to incorrectly take into account the connector name when it doesn't need to,
> which triggers the issue due to an AMD-specific kernel bug that results in
> the connector IDs changing on boot (which I can't find a link to right now,
> sorry).
> A colleague found the AMD kernel bug for me: 
> https://bugzilla.kernel.org/show_bug.cgi?id=206387.

I don't think this kernel bug is affecting me -- my Xorg logs show that the
output names are consistent from boot to boot:

[root@edison ~]# grep DisplayPort- /var/log/Xorg.0.log
[    27.175] (II) AMDGPU(0): Output DisplayPort-0 has no monitor section
[    27.177] (II) AMDGPU(0): Output DisplayPort-1 has no monitor section
[    27.177] (II) AMDGPU(0): Output DisplayPort-2 has no monitor section
[    27.218] (II) AMDGPU(0): EDID for output DisplayPort-0
[    27.218] (II) AMDGPU(0): Printing probed modes for output DisplayPort-0
[    27.220] (II) AMDGPU(0): EDID for output DisplayPort-1
[    27.221] (II) AMDGPU(0): Printing probed modes for output DisplayPort-1
[    27.221] (II) AMDGPU(0): EDID for output DisplayPort-2
[    27.222] (II) AMDGPU(0): Output DisplayPort-0 connected
[    27.222] (II) AMDGPU(0): Output DisplayPort-1 connected
[    27.222] (II) AMDGPU(0): Output DisplayPort-2 disconnected
[    27.222] (II) AMDGPU(0): Output DisplayPort-0 using initial mode 2560x1440
+0+0
[    27.222] (II) AMDGPU(0): Output DisplayPort-1 using initial mode 2560x1440
+2560+0

[root@edison ~]# grep DisplayPort- /var/log/Xorg.0.log.old 
[    26.438] (II) AMDGPU(0): Output DisplayPort-0 has no monitor section
[    26.440] (II) AMDGPU(0): Output DisplayPort-1 has no monitor section
[    26.440] (II) AMDGPU(0): Output DisplayPort-2 has no monitor section
[    26.487] (II) AMDGPU(0): EDID for output DisplayPort-0
[    26.487] (II) AMDGPU(0): Printing probed modes for output DisplayPort-0
[    26.489] (II) AMDGPU(0): EDID for output DisplayPort-1
[    26.490] (II) AMDGPU(0): Printing probed modes for output DisplayPort-1
[    26.490] (II) AMDGPU(0): EDID for output DisplayPort-2
[    26.491] (II) AMDGPU(0): Output DisplayPort-0 connected
[    26.491] (II) AMDGPU(0): Output DisplayPort-1 connected
[    26.491] (II) AMDGPU(0): Output DisplayPort-2 disconnected
[    26.491] (II) AMDGPU(0): Output DisplayPort-0 using initial mode 2560x1440
+0+0
[    26.491] (II) AMDGPU(0): Output DisplayPort-1 using initial mode 2560x1440
+2560+0

> I think we changed the detection algorithm in Plasma 5.26. Any chance you
> could test with 5.26 to see if it's still happening?

I'm planning to update to Fedora 37 shortly which I believe has 5.26. I'll
report back here once I have tried it.

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