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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [Topaz] Regression introduces in 4.8-rc3"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98505#c16">Comment # 16</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [Topaz] Regression introduces in 4.8-rc3"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98505">bug 98505</a>
from <span class="vcard"><a class="email" href="mailto:peter@lekensteyn.nl" title="Peter Wu <peter@lekensteyn.nl>"> <span class="fn">Peter Wu</span></a>
</span></b>
<pre>(In reply to Alex Deucher from <a href="show_bug.cgi?id=98505#c15">comment #15</a>)
<span class="quote">> (In reply to Peter Wu from <a href="show_bug.cgi?id=98505#c14">comment #14</a>)</span >
[..]
<span class="quote">> > The Windows 8 requirements state that the discrete GPU is render-only[0],
> > but the Win10 reqs have no such requirement[1]. (Are these the same specs
> > you had in mind? If not, could you share the right one?) On my new hybrid
> > nvidia laptop, there are actually DP/HDMI ports to the dGPU (HDMI with
> > audio).
>
> I had access to the PR3 spec internally. I'm not sure if it's available
> publicly or not. Support for displays was not included in the information I
> saw or from talking with our internal hybrid graphics architects. It's
> possible the spec has been updated since I last talked to them earlier this
> year. I can double check.
>
> Does your new laptop use PR3 or the older nvidia proprietary ACPI method?</span >
The laptop (Clevo P651RA) uses PR3 (confirmed via a Windows 10 trace):
<a href="https://github.com/Bumblebee-Project/bbswitch/issues/115#issuecomment-218622306">https://github.com/Bumblebee-Project/bbswitch/issues/115#issuecomment-218622306</a>
<span class="quote">> > Have you been working on this or should I have a look?
>
> I have not been. Please have a look. Thanks!</span >
Ok, do you have any certainty about the earliest BIOS date where _PR3 is used?
E.g. if the minimum date is lowered to 2014 without checking for _PR3, would it
be likely to miss out some models?</pre>
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