[Bug 107583] Linux: REGRESSION: drm: cmdline EDID override mechanisms broken since 4.15
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Thu Aug 16 06:33:39 UTC 2018
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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