[Bug 94338] Kernel DRM/i915 init sends eDP panel into self-test loop

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94338

--- Comment #43 from Francesco Simula <francesco.simula at roma1.infn.it> ---
(In reply to Clinton Taylor from comment #42)
> The correct solution for this issue is to set panel_type=0 from comment #21
> or the attached patch. The BIOS is giving the driver the incorrect
> information and you will need to force the driver to use panel_type 0.

Is there a way to set this "panel_type=0" by adding to the GRUB kernel line
some option for the i915 module? I see that here (Fedora 28, kernel
4.17.19-200) the i915 module has "panel" in the following options:

- panel_ignore_lid:Override lid status (0=autodetect, 1=autodetect disabled
[default], -1=force lid closed, -2=force lid open) (int)

- panel_use_ssc:Use Spread Spectrum Clock with panels [LVDS/eDP] (default: auto
from VBT) (int)

- vbt_sdvo_panel_type:Override/Ignore selection of SDVO panel mode in the VBT
(-2=ignore, -1=auto [default], index in VBT BIOS table) (int)

Is "panel_type" one of these?

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