[Bug 85924] [hsw DP-to-DVI] DP hot plug fails if booted without Monitor Attached

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=85924

--- Comment #33 from Zoran Stojsavljevic <zoran.stojsavljevic at intel.com> ---
Hello Karin,

Here is what (after what you have tested) we have:
[1] HSW UEFI BIOS + vBIOS + WIN7 = OK
[2] HSW UEFI BIOS + vBIOS + WIN8.1 = OK
[3] HSW UEFI BIOS + GOP + WIN7 = NOT IMPORTANT
[4] HSW UEFI BIOS + GOP + WIN8.1 = OK
[5] HSW UEFI BIOS + vBIOS + F20 = FAILED (NOT POR/BKM)
[6] HSW UEFI BIOS + GOP + F20 = FAILED

Could you, please, do one more quick test for me?

Please, use at minimum 3 cables of each:
o  native DP connection
o  active DP-to-DVI adapter
o  two types of passive DP-to-DVI adapters

And redo tests for use cases:
[1] HSW UEFI BIOS + vBIOS + WIN7 = OK
[2] HSW UEFI BIOS + vBIOS + WIN8.1 = OK
[4] HSW UEFI BIOS + GOP + WIN8.1 = OK
[6] HSW UEFI BIOS + GOP + F20 = FAILED

Just to be sure if i915 kernel GFX driver is not on the timing edge (I expect
that for [6] some use cases have chances to work)?

You have everything in place, this will be +30 minutes to verify that [1], [2]
and [4] work always, and [6] fails most of/ALL the time, so we eliminate cable
electrical characteristics variations (same type of cables have slightly
different characteristics, I know that from my Past)?

Thank you,
Zoran

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