[Bug 102931] Radeon : EDID Reading Incorrectly

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Sun Aug 16 19:02:31 PDT 2015


Alex Deucher <alexdeucher at gmail.com> changed:

           What    |Removed                     |Added
                 CC|                            |alexdeucher at gmail.com

--- Comment #1 from Alex Deucher <alexdeucher at gmail.com> ---
IIRC, get-edid doesn't actually probe any i2c buses, it uses vm86 to do vbe
calls to the vbios.  vbe will only provide the edid for whatever monitor it
happened to probe at boot and likely won't work correctly once a real driver is
loaded.  It's also not multi-head aware so if you have multiple monitors
attached or are using a different display than what was available at boot it
probably won't work.

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