[Bug 107583] Linux: REGRESSION: drm: cmdline EDID override mechanisms broken since 4.15

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107583

--- Comment #2 from Jani Nikula <jani.nikula at intel.com> ---
The logs reference v4.13 but commits 53fd40a90f3c ("drm: handle override and
firmware EDID at drm_do_get_edid() level") and ac6c35a4d8c7 ("drm: add
backwards compatibility support for drm_kms_helper.edid_firmware") were added
in v4.15.

The dmesg from comment #1 has 
[   13.716143] drm: unknown parameter 'edid_firmware' ignored
while the dmesg from comment #0 has
[   14.264421] drm_kms_helper: unknown parameter 'edid_firmware' ignored

Make sure you have CONFIG_DRM_LOAD_EDID_FIRMWARE=y.

Please check your config, and ensure you're running kernel and modules from a
proper v4.15+ build.

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