Comment 10 for bug 311485

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Geir Ove Myhr (gomyhr) wrote : Re: [Bug 311485] Re: Logix Monitor: Default Resolution Not Valid

I was just reading that document too. It keeps saying "EDID structure
version 1 revision 0 is not considered compliant." (e.g. in section
4.3.2). I guess X assumes the structure that is valid for 1.1 and
above, but I haven't looked at the source code.

Depending on the policy for handling legacy hardware, it may be
possible to add an EDID quirk for this model (see
https://wiki.ubuntu.com/X/Quirks#Monitor%20Quirks). Otherwise, it
should be possible to turn off the DDC information by adding some
lines to the Monitor and Device section of xorg.conf.

Section Device
  ...
  Option "DDC" "false"
EndSection

Section Monitor
  ...
  HorizSync <something>
  VertRefresh <something>
  DisplaySize <x in mm> <y in mm>
EndSection

You can also play with modelines in the device section. The HorizSync
and VertRefresh ranges should be given by your monitor specs.