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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#c7">Comment # 7</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:peter@lekensteyn.nl" title="Peter Wu <peter@lekensteyn.nl>"> <span class="fn">Peter Wu</span></a>
</span></b>
<pre>(In reply to Benny Ammitzbøll from <a href="show_bug.cgi?id=101404#c6">comment #6</a>)
[..]
<span class="quote">> 00:01.0 PCI bridge [0604]: Intel Corporation Skylake PCIe Controller (x16)
> [8086:1901] (rev 07)</span >
[..]
<span class="quote">> 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GM204M [GeForce
> GTX 970M] [10de:13d8] (rev a1)</span >
[..]
<span class="quote">> In the "Tunables" tab? They're all "Bad" when on AC (until I change them to
> Good):</span >
[..]
<span class="quote">> >> Bad Runtime PM for PCI Device NVIDIA Corporation GM204M [GeForce GTX 970M] </span >
[..]
<span class="quote">> Bad Runtime PM for PCI Device Intel Corporation Skylake PCIe
> Controller (x16)</span >
There is your problem. You have something that modifies runtime PM settings. In
the default configuration, runtime PM would be enabled for both. Try
removing/disabling that problematic tool.
<span class="quote">> Ok, but you say that I can't use the second (preferred) option when I load
> the nouveau driver - so I must use pcie_port_pm=off. Shouldn't the nouveau
> driver be updated to support the second option in stead?</span >
nouveau has been updated at the same time to support the new, preferred option.
But if you use pcie_port_pm=off, it will fallback to the old method.
<span class="quote">> > Upgrade to kernel 4.10 or newer, then your brightness keys should work
> > without forcing acpi_osi=Linux. See
> > <a href="https://bugzilla.kernel.org/show_bug.cgi?id=123651">https://bugzilla.kernel.org/show_bug.cgi?id=123651</a>
>
> Not so, I am already on kernel 4.9.34:</span >
4.9 is too old, use 4.10 (TEN) or newer.</pre>
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