Nouveau - Jul 2020 - nouveau regression with 5.7 caused by "PCI/PM: Assume ports without DLL Link Active train links in 100 ms"

Hi,

[Sorry for the delay, I was on vacation]

On Fri, Jul 17, 2020 at 01:32:10PM +0200, Karol Herbst
wrote:
> Filed at https://bugzilla.kernel.org/show_bug.cgi?id=208597
Thanks for reporting.

I'll check your logs and try to figure if there is something we can do
to make both nouveau and TBT working at the same time.
> oddly enough I wasn't able to reproduce it on my XPS 9560, will ping
> once something breaks.

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

On Tue, 2020-07-21 at 15:22 +0300, Mika Westerberg
wrote:
> Hi,
> 
> [Sorry for the delay, I was on vacation]
> 
> On Fri, Jul 17, 2020 at 01:32:10PM +0200, Karol Herbst wrote:
> > Filed at https://bugzilla.kernel.org/show_bug.cgi?id=208597
> 
> Thanks for reporting.
> 
> I'll check your logs and try to figure if there is something we can do
> to make both nouveau and TBT working at the same time.
> 
> > oddly enough I wasn't able to reproduce it on my XPS 9560, will
ping
> > once something breaks.
-- 
Cheers,
	Lyude Paul (she/her)
	Software Engineer at Red Hat

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.