[Openchrome-devel] [Bug 91966] No signal to monitor with X and openchrome using VX855 chipset graphics

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91966

--- Comment #139 from Kevin Brace <kevinbrace at gmx.com> ---
Created attachment 121239
  --> https://bugs.freedesktop.org/attachment.cgi?id=121239&action=edit
Determine the interface type for VGA detection

The previous version of the code that took into consideration
using I2C bus 1 and 2 to obtain EDID did not examine whether or not
the monitor connected to is a digital or analog type. Since I2C bus 2 is
often connected to a digital type interface, this meant that VGA monitor
detection code was misdetecting the connected output type if I2C bus 1
did not detected a monitor (i.e., VGA monitor), but I2C bus 2 detected
a monitor (likely a DVI monitor or LVDS flat panel). Now the code will
look to see if the connected type is an analog type interface before
recognizing it as a likely VGA monitor.

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