Re: [PATCH] drm/i915/cnp: Ignore VBT request for know invalid DDC pin.

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> On 24 Jan 2018, at 6:03 PM, Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx> wrote:
> 
> On Wed, 24 Jan 2018, Kai Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> wrote:
>> Hi,
>> 
>>> On 24 Jan 2018, at 5:25 PM, Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx> wrote:
>>> A bit too fast IMO. The bug report doesn't include the vbt dump which
>>> you should *always* look at before making workarounds for vbt.
>> 
>> I didn’t have access to the machine in question until now, I can provide
>> VBT dump as well as i915_opregion requested by Ville.
>> 
>> But how do I make a VBT dump?
> 
> Copy /sys/kernel/debug/dri/0/i915_vbt
> 
> I don't think the opregion will be necessary, I think Ville asks for it
> for the vbt, which on most platforms is contained in the opregion.
> 

Thanks for the tip.

Attached i915_vbt:
https://bugs.freedesktop.org/attachment.cgi?id=136935

Kai-Heng

> BR,
> Jani.
> 
> 
>> 
>> Kai-Heng 
>> 
>>> 
>>> -- 
>>> Jani Nikula, Intel Open Source Technology Center
>> 
> 
> -- 
> Jani Nikula, Intel Open Source Technology Center

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