[Bug 89554] [SKL Bisected] eDP can not be lighted up after entering kernel

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89554

--- Comment #6 from ye.tian <yex.tian at intel.com> ---
(In reply to Sonika from comment #2)
> For me with kernel version 4.0.0-rc3, eDP is working fine.
> 
> The EDP low vswing table gets selected only when edp_vswing_preemph is set
> in vbt.
> For me, it works with both low vswing table as well as the dp translation
> table with an edp1.3 panel.
> 
> Only thing I can suspect is that we are trying to use low vswing table for
> some panel which is not able to handle those values.
> Can you please see if this variable is set in vbt?
> If it is set, please try to disable it and try.

I have no idea, could you tell me how to set this variable? where?

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