[Bug 67030] [HSW] no modes bigger than 1080p in the parsed EDID for 4k TV on both HDMI/VGA

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67030

--- Comment #33 from Damien Lespiau <damien.lespiau at gmail.com> ---
I'm updating my sandybridge machine to be able to compile an X server easily,
will take a while.

At the moment I'm suspecting xf86ProbeOutputModes() that uses
xf86ForEachDetailedBlock() to, it seems, compute max_clock from the DS_RANGE
sections. On this EDID, we have a GTF range section:

- Monitor ranges (GTF): 49-76Hz V, 15-80kHz H, max dotclock 140MHz

and that ends up being used.

I don't see any evidence that the X server parses the HDMI vendor specific
block (other than xf86MonitorIsHDMI()) and that block contains a different max
clock:

- Maximum TMDS clock: 300MHz

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