[Intel-gfx] i915 4.9 regression: DP AUX CH sanitization no longer working on Asus desktops

[Daniel Drake]

On Fri, May 5, 2017 at 4:29 AM, Ville Syrjälä
<ville.syrjala at linux.intel.com> wrote:
> On Thu, May 04, 2017 at 02:52:09PM -0600, Daniel Drake wrote:
>> On Thu, May 4, 2017 at 2:37 PM, Ville Syrjälä
>> <ville.syrjala at linux.intel.com> wrote:
>> > Please check if commit bb1d132935c2 ("drm/i915/vbt: split out defaults
>> > that are set when there is no VBT") fixes things for you.
>>
>> I think this is not going to help. This would only make a difference
>> when there is no VBT at all at which point we would see this message
>> in the logs:
>>
>>                 DRM_INFO("Failed to find VBIOS tables (VBT)\n");
>
> No, the patch will in fact make a difference only when there is a VBT.

We confirmed the mentioned patch fixes the issue. Apologies for doubting you :)

Thanks!
Daniel