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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - GTX 970M (GM204-A) not powered off when not in use (DynPwr in stead of DynOff)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101404#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - GTX 970M (GM204-A) not powered off when not in use (DynPwr in stead of DynOff)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101404">bug 101404</a>
from <span class="vcard"><a class="email" href="mailto:benny@ammitzboell-consult.dk" title="Benny Ammitzbøll <benny@ammitzboell-consult.dk>"> <span class="fn">Benny Ammitzbøll</span></a>
</span></b>
<pre>(In reply to Peter Wu from <a href="show_bug.cgi?id=101404#c3">comment #3</a>)
<span class="quote">> When the nouveau driver is loaded, runtime PM for the Nvidia PCI device
> (01:00.0 in your case) should be enabled.</span >
Yes, I agree. Why is the Nvidia card not going to DynOff when on AC and not
being used then? I can force it by using powertop, but why does this not happen
automatically?
<span class="quote">> Without pcie_port_pm=off this will
> also enable runtime PM for the parent device, a PCIe port.</span >
Ok, but then I don't understand why without pcie_port_pm=off I get a higher
power consumption? I mean, the parent device should power down the entire PCIe
port incl. the Nvidia card? And before linux kernel 4.8 (I think)
pcie_port_pm=off was not needed, so what happened?
<span class="quote">> Any reason why you boot with acpi_osi=! acpi_osi=Linux? If you want to
> prevent a lockup that occurs with Clevo P6xxRx models, try
> acpi_osi="!Windows 2015"
> (see <a href="https://bugzilla.kernel.org/show_bug.cgi?id=156341">https://bugzilla.kernel.org/show_bug.cgi?id=156341</a>)</span >
Because while acpi_osi="!Windows 2015" does prevent the lockup, I still have
some Fn keys that are not working (notably those that adjust screen brightness,
but others as well). With acpi_osi=! acpi_osi=Linux all of my Fn keys are
working, incl. no lockup.</pre>
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