[Bug 109112] "*ERROR* Failed to probe lspcon" when HDMI isn't plugged before boot

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109112

--- Comment #36 from Josh <freefreeno81 at gmail.com> ---
I have a new Dell Precision 7540 that came with OEM Ubuntu LTS and I have the
same errors in Ubuntu LTS and Arch stable and I also tried Kubuntu 19.10. So on
all kernels and all Distro's I guess. I have both Intel and AMD Graphics and I
am using the modesetting i915 driver as default. I also have the mesa hardware
acceleration driver installed and xf86-video-amdgpu installed.

Operating System: Arch Linux 
KDE Plasma Version: 5.17.1
KDE Frameworks Version: 5.63.0
Qt Version: 5.13.1
Kernel Version: 5.3.7-arch1-1-ARCH
OS Type: 64-bit
Processors: 12 × Intel® Core™ i7-9750H CPU @ 2.60GHz
Memory: 15.4 GiB of RAM


[josh at archkde ~]$ dmesg --level=err,warn                     
[    0.462839] MDS CPU bug present and SMT on, data leak possible. See
https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more
details.
[    0.501892]   #7  #8  #9 #10 #11
[    0.669275] ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
[    2.043797] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon
[    2.043822] [drm:intel_ddi_init [i915]] *ERROR* LSPCON init failed on port D

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