[Bug 86377] [HSW ULT GT3 DP] Blank screen at 3840x2160 resolution (both framebuffer and Xorg)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86377

--- Comment #15 from Brian Campbell <brian.campbell at editshare.com> ---
Ah, good catch. That's too bad. And I'm assuming there's nothing I can do to
reduce blanking even further to get the clock rate down to what's supported?
According to the cvt tool, this is the mode for reduced blanking at
3840x2160 at 60, but there's a relatively new mode for reduced blanking v2 that's
supposed to reduce it further still. I don't have access to the relevant
standards, however, and can't run the spreadsheet which is public without
Excel. I don't know if it's possible that the monitor would support a mode it
doesn't advertise, but I figure it's worth a shot. Any idea what the proper
modeline for reduced blanking v2 would be, and if it's under 450 MHz?

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