[Nouveau] [Bug 108058] After resuming from suspend, discrete GPU is powered on and can't be turned off

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108058

--- Comment #1 from Tolga Cakir <cevelnet at gmail.com> ---
I might have the same issue - I posted it under bug 98386. Happens on a Dell
M3800, Intel Core i7-4702HQ, Nvidia Quadro K1100M, Arch Linux w/ kernel 4.19.2.

Same as you, after fresh boot I get around  ~7W in idle and after S3 resume I
get 15W and more, no matter how long I wait. Contrary to your observations,
bbswitch works for me; nouveau doesn't.

I have found out, that echoing lowest pstate (/sys/kernel/debug/dri/*/pstate)
after S3 resume solves this issue. Power consumption drops back to 7-8W in
idle.

I will post full dmidecode and dmesg in a couple of hours.

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