nouveau regression with 5.7 caused by "PCI/PM: Assume ports without DLL Link Active train links in 100 ms"

Lyude Paul lyude at redhat.com
Tue Jul 21 18:24:19 UTC 2020


On Tue, 2020-07-21 at 12:00 -0400, Lyude Paul wrote:
> On Tue, 2020-07-21 at 18:27 +0300, Mika Westerberg wrote:
> > On Tue, Jul 21, 2020 at 11:01:55AM -0400, Lyude Paul wrote:
> > > Sure thing. Also, feel free to let me know if you'd like access to one
> > > of
> > > the
> > > systems we saw breaking with this patch - I'm fairly sure I've got one
> > > of
> > > them
> > > locally at my apartment and don't mind setting up AMT/KVM/SSH
> > 
> > Probably no need for remote access (thanks for the offer, though). I
> > attached a test patch to the bug report:
> > 
> >   https://bugzilla.kernel.org/show_bug.cgi?id=208597
> > 
> > that tries to work it around (based on the ->pm_cap == 0). I wonder if
> > anyone would have time to try it out.
> 
> Will give it a shot today and let you know the result

Ahh-actually, I thought the laptop I had locally could reproduce this bug but
that doesn't appear to be the case whoops. Karol Herbst still has access to a
machine that can test this though, so they'll likely get to trying the patch
today or tommorrow

> 
-- 
Cheers,
	Lyude Paul (she/her)
	Software Engineer at Red Hat



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