RE: Regression from "ACPI: OSI: Remove Linux-Dell-Video _OSI string"? (was: Re: Bug#1036530: linux-signed-amd64: Hard lock up of system)

[Limonciello, Mario]

[AMD Official Use Only - General]

> -----Original Message-----
> From: Karol Herbst <kherbst@xxxxxxxxxx>
> Sent: Thursday, June 1, 2023 11:33 AM
> To: Limonciello, Mario <Mario.Limonciello@xxxxxxx>
> Cc: Nick Hastings <nicholaschastings@xxxxxxxxx>; Lyude Paul
> <lyude@xxxxxxxxxx>; Lukas Wunner <lukas@xxxxxxxxx>; Salvatore
> Bonaccorso <carnil@xxxxxxxxxx>; 1036530@xxxxxxxxxxxxxxx; Rafael J.
> Wysocki <rafael@xxxxxxxxxx>; Len Brown <lenb@xxxxxxxxxx>; linux-
> acpi@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> regressions@xxxxxxxxxxxxxxx
> Subject: Re: Regression from "ACPI: OSI: Remove Linux-Dell-Video _OSI
> string"? (was: Re: Bug#1036530: linux-signed-amd64: Hard lock up of system)
>
> On Thu, Jun 1, 2023 at 6:18 PM Limonciello, Mario
> <mario.limonciello@xxxxxxx> wrote:
> >
> > +Lyude, Lukas, Karol
> >
> > On 5/31/2023 6:40 PM, Nick Hastings wrote:
> > > Hi,
> > >
> > > * Nick Hastings <nicholaschastings@xxxxxxxxx> [230530 16:01]:
> > >> * Mario Limonciello <mario.limonciello@xxxxxxx> [230530 13:00]:
> > > <snip>
> > >>> As you're actually loading nouveau, can you please try
> nouveau.runpm=0 on
> > >>> the kernel command line?
> > >> I'm not intentionally loading it. This machine also has intel graphics
> > >> which is what I prefer. Checking my
> > >> /etc/modprobe.d/blacklist-nvidia-nouveau.conf
> > >> I see:
> > >>
> > >> blacklist nvidia
> > >> blacklist nvidia-drm
> > >> blacklist nvidia-modeset
> > >> blacklist nvidia-uvm
> > >> blacklist ipmi_msghandler
> > >> blacklist ipmi_devintf
> > >>
> > >> So I thought I had blacklisted it but it seems I did not. Since I do not
> > >> want to use it maybe it is better to check if the lock up occurs with
> > >> nouveau blacklisted. I will try that now.
> > > I blacklisted nouveau and booted into a 6.1 kernel:
> > > % uname -a
> > > Linux xps 6.1.0-9-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.27-1
> (2023-05-08) x86_64 GNU/Linux
> > >
> > > It has been running without problems for nearly two days now:
> > > % uptime
> > >   08:34:48 up 1 day, 16:22,  2 users,  load average: 1.33, 1.26, 1.27
> > >
> > > Regards,
> > >
> > > Nick.
> >
> > Thanks, that makes a lot more sense now.
> >
> > Nick, Can you please test if nouveau works with runtime PM in the
> > latest 6.4-rc?
> >
> > If it works in 6.4-rc, there are probably nouveau commits that need
> > to be backported to 6.1 LTS.
> >
> > If it's still broken in 6.4-rc, I believe you should file a bug:
> >
> > https://gitlab.freedesktop.org/drm/nouveau/
> >
> >
> > Lyude, Lukas, Karol
> >
> > This thread is in relation to this commit:
> >
> > 24867516f06d ("ACPI: OSI: Remove Linux-Dell-Video _OSI string")
> >
> > Nick has found that runtime PM is *not* working for nouveau.
> >
>
> keep in mind we have a list of PCIe controllers where we apply a
> workaround:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers
> /gpu/drm/nouveau/nouveau_drm.c?h=v6.4-rc4#n682
>
> And I suspect there might be one or two more IDs we'll have to add
> there. Do we have any logs?

There's some archived onto the distro bug.  Search this page for "journalctl.log.gz"
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1036530

> And could anybody test if adding the
> controller in play here does resolve the problem?
>
> > If you recall we did 24867516f06d because 5775b843a619 was
> > supposed to have fixed it.
> >