Comment # 11
on bug 98505
from Peter Wu
(In reply to Alex Deucher from comment #10) > (In reply to Peter Wu from comment #7) > > Created attachment 127678 [details] [review] [review] [review] > > amdgpu patch that checks whether the new interface can be used for PM > > > > PCIe port PM is not enabled because this BIOS is pre-2015: 12/04/2014 > > The BIOS seems to be able to report support for lots of things (can you post > > a fuller dmesg that include the supported functions?): > > Can we bump the bios white list to 2014? Windows enabled Hybrid graphics on > windows 8.x as well as 10, and a number of preliminary win10 systems have > 2014 bios versions. I'd prefer that to doing all of these hacks in the drivers. Lowering the minumum from 2015 to 2014 should work for nouveau: https://lists.freedesktop.org/archives/nouveau/2016-July/025619.html You can try to ask Mika, see v4.7-rc2-3-g9d26d3a. Maybe the presence of a power resource (_PR3 or flags.power_resources) can be used as a hint whether to enable port PM.
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